Rodby Skate Treadmill RL4000E

Skate Treadmill RL4000E


About the Skate Treadmill

The Rodby RL4000E is the second shortest among Rodby’s large skate treadmills, featuring a belt length of 4000 mm and width options of 2500, 2700, and 3000 mm. The RL4000E is designed for versatile use in test labs, sports centers, and by athletes worldwide, catering to activities such as roller skiing, running, cycling, roller ski skating, ski mountaineering (Skimo), inline racing practice, and wheelchair testing, training, and rehabilitation. With its generous belt length, the RL4000E provides ample space for a wide range of sports, focusing on technique enhancement, endurance training, interval training, lactate threshold training, VO2 max training, uphill climbing, and practicing on GPX tracks.

The RL4000E skate treadmill stands out as an excellent choice for elite athletes seeking personal use, offering a sufficient belt length of 4000 mm for advanced practitioners. Numerous world-renowned athletes have chosen the RL4000E for their personal skate treadmill. This treadmill is well-suited for athletes engaging in various exercises, including running, roller skiing (skate and diagonal style), double-poling, inlines and roller skating, cycling, wheelchair activities, framerunner sessions, and even pair training.


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of Rodby Treadmills

Accurate measurement of ability provides measurable progress.
Heart rate controlled and interval exercise with accuracy and repeatability.
Exercise and improve VO2max and lactic acid threshold.
Train on racetracks by loading and running GPS-GPX files.
Technique analysis with efficient traceable technique development.
Tailor-made training sessions adapted to practitioners and levels.
Pulse control of the treadmill speed via band / watch with Bluetooth®.
Full torque from 1-3000 rpm. Set speed = belt speed ± 1%.
Swedish manufacturing with top-notch quality without bad compromises.

Datasheet Skate Treadmills

Rodby Skate Rollerski Treadmills English
Rodby Skate Rollerski Treadmills English

Product sheet / brochure for Rodby Skate Rollerski Treadmill models RL3500E x 2200 and larger with Rodby Control System 2.0. PDF file.

Version: 2024.1

Suitability for Activities

of this model of Rodby Treadmill

The estimated suitability of the skate treadmill for practitioners, based on the length and width of the treadmill belt, is graded as follows. Optimal: The treadmill is exceptionally well-suited for the practitioner’s chosen activities in terms of both length and width. Very Good: The treadmill is highly suitable, with excellent compatibility in terms of length and width. Good but Not Optimal: The treadmill is suitable for the practitioner’s activities, but there might be minor compromises in terms of length or width. When the treadmill is intended for use across multiple sports activities, it is recommended to consider the least common denominator for both length and width, if possible. These suitability estimates are applicable for practitioners ranging from at least experienced level up to elite level. They are provided to assist you in selecting the appropriate size of the treadmill based on insights gained from previous treadmill installations and feedback from users.

Optimal combination activity and treadmill.
Very good combination activity and treadmill.
Good but not optimal combination.
Not recommended combination.


Endurance, VO2 max, lactate threshold etc.

Suitability Treadmill and Testing 100%

Optimal for testing. The RL4000E is suitable for test labs and sports centers, providing an ideal platform for physiological testing and evaluation across various activities in numerous countries. The treadmill's size is optimal for conducting tests involving different roller skiing techniques, running, and is also well-suited for bicycling, wheelchair exercises, inline skating, and pair roller skiing. However, for activities such as sprinting and pair bicycling, a longer Rodby treadmill is recommended for an optimal experience.

Rollerski Skate

Roller skiing skate style on roller skis

Suitability Treadmill and Rollerski skate 100%
Rullskidor skate

Optimal combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is an excellent choice for practicing roller skiing in the skate technique. The treadmill offers several benefits for practitioners. Technical practice with follow-up is crucial for mastering the skating technique, and the treadmill provides a unique opportunity to design custom tracks or practice on various "gears" during a session or at specific angles, which is challenging to achieve in outdoor practice. With the treadmill, the training process becomes simple, time-saving, and efficient.

Rollerski Biathlon

Biathlon skate skiing technique on roller skis

Suitability Treadmill and Biathlon Rollerski 100%
Rullskidor skidskytte

Optimal combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is excellent for biathlon, which exclusively utilizes the skate technique. Biathlon, being a combination sport, places emphasis on the athlete's ability to manage shooting performance, which is influenced by the rider's conditioning for achieving the necessary heart rate reduction on the shooting range, while maintaining a competitive speed in the tracks. The treadmill's pulse control serves as a crucial tool for optimizing both speed and energy-efficient skating, aiding in practicing maximum effort skating for the final sprint lap before the finish line.

Rollerski Double-poling

Classic skiing double-poling technique on roller skis

Suitability Treadmill and Rollerski Double-poling 100%
Rullskidor stakning

Optimal combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is excellent for roller ski double-poling practice. Double poling has become a distinct discipline, gaining popularity in the Ski Classics international long-distance cross-country skiing cup competition, where the elite exclusively employs double-poling. In modern cross-country skiing, mastering the technique of poling at various uphill angles is a critical skill. Achieving the right torso positioning, maintaining an upright body posture, and finding balance when shifting the center of gravity forward and upward with stretched legs and raised heels, followed by effectively transmitting force from the body weight and core muscles down through the poles are challenging aspects of this technique. Mastery of double-poling requires dedicated practice and repetition. The treadmill offers a unique platform for practicing these elements in a controlled environment. The safety belt adds an extra layer of security, encouraging practitioners to approach balance points that may feel unsafe without it. The treadmill facilitates the development of safe movement patterns, enabling practitioners to seamlessly transition between different slopes when skiing on a track. For skiers aiming for long-distance cross-country skiing, where double-poling is paramount, a treadmill becomes a valuable training tool.

Rollerski Diagonal

Classic skiing diagonal technique on roller skis

Suitability Treadmill and Rollerski Diagonal Technique 100%
Rullskidor diagonal

Optimal combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is excellent for practicing with roller skis in the diagonal technique of the classic cross-country style. Classic cross-country skiing on roller skis has evolved, with a shift towards increased use of double-poling on flat and moderate inclines (refer to the previous section). However, the diagonal style technique, or gear, remains crucial for ascending moderately to steep inclines. The treadmill, with its elevation capabilities ranging from 0 to 14° (0-25%), is well-suited for practicing and refining all styles (gears) of the classic cross-country technique. Despite being one of the oldest skiing techniques, the classic diagonal style continues to evolve. In steep uphill skiing, there's a recent trend towards a swifter movement pattern resembling a running technique where the foot moves in a circular motion, akin to a cyclist. In this approach, the ski does not slide with each step. The effectiveness of this running technique likely stems from larger, less static leg movements and a more light and even load on the leg muscles. Simulating this running technique is best achieved by exercising with regular running shoes and ski poles on the treadmill.

Ski Mountaineering Skimo

Training ski alpinism SKIMO or randonnée walking with skis uphill

Suitability Treadmill and Skimo 100%
Skimo Ski Mountaineering

Perfectly optimal combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is excellent for training and testing in ski mountaineering (Skimo). Skimo training involves the use of real skimo skis with fitted ski skins, authentic ski boots, and genuine ski poles equipped with Rodby model Karda pole tips. Rodby's skate treadmill belt can be elevated up to 14° (25%) for Skimo training. For those desiring an even steeper ascent, the optional "Extra elevation 20° (36%)" is available. This configuration allows the exerciser to fully simulate the sub-moments of ski alpinism while walking-skiing uphill. Training on the treadmill offers numerous benefits, including accurate measurement of ability, measurable progress, VO2max and lactic acid threshold training, repeatability between training sessions, heart rate control, and customized "tracks" simulating competition courses in Skimo.


Running, racewalking and walking

Suitability Treadmill and Running 100%

Optimal combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is excellent for running training. Rodby treadmills feature special alloy aluminum sheets as the gliding base for the belt, providing a sensation for the runner that mimics outdoor running on hard gravel roads. The treadmill's width and large running surface facilitate running analyses to correct and improve running technique. Equipped with heart rate control, the treadmill control system is highly effective for interval training, quick distance workouts, intervals, threshold and lactic acid training, as well as VO2 max running. These features contribute to the numerous benefits that a treadmill brings to running training.


All kinds like road, mountain or track bicycling

Suitability Treadmill and bicycling 95%

Very good combination of skate treadmill and activity. A treadmill provides a much more realistic training environment, especially as the bike's vertical angle to the ground is not static, unlike ordinary training bikes that stand on a floor. This advantage becomes most prominent during uphill and sprinting sessions when the cyclist rocks from side to side. Additionally, the cyclist can train with their own bike, reducing the risk of adopting incorrect movement patterns seen in floor-placed training bikes. Rodby skate treadmills, equipped with the optional Rodby Max Top speed upgrade allowing speeds up to 70 km/h, work very well for bicycling in their three different widths (2500, 2700, and 3000 mm). However, for safety reasons and to provide sufficient margin forward and backward during increased speed, uphill training, and braking, a belt length of 4500 mm or longer is recommended.


Wheelchair and Frame runner racing

Suitability Treadmill and Inline Racing 90%
Wheel Chair

Very good combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is well-suited for practicing with a wheelchair or framerunner. Rodby offers special options tailored to this category of practitioners. However, for enhanced safety and to provide sufficient margin forward and backward, it is advisable to opt for a longer treadmill.

Inline racing

Inline racing and speed skating on wheels

Suitability Treadmill and Inline Racing 95%

Very good combination of skate treadmill and activity. The RL4000E, available in three different widths (2500, 2700, and 3000 mm), is well-suited for practicing on inline skates. Given the relatively high speeds involved in inline skiing, it is advisable, if possible, to opt for a longer treadmill for enhanced safety and to provide a sufficient margin forwards and backwards.

Pair Training

Two practitioners simultaneously on roller skis or inlines

Suitability Treadmill and Pair Training 90%

Very good combination of skate treadmill and activity. Pair training on skate treadmills demands experienced practitioners with excellent teamwork skills. Both the length and width of the treadmill significantly impact the safety and effectiveness of training. For optimal suitability in pair training scenarios, we recommend choosing a longer and wider treadmill.


Sprint training on bicycle, roller skis or inlines

Suitability Treadmill and Sprinting 75%
Sprint spurt

Good but not optimal combination of skate treadmill and activity. If the training involves rapid speed changes, sprints, and intervals, we recommend using a skate treadmill with a length of at least 4500 mm or longer. This is crucial for the safety of the rider and to ensure a realistic training experience. This recommendation holds particularly true for cyclists. A longer treadmill offers a better experience, eliminating concerns about the edges of the belt during intense training sessions.

Pair Bicycling

Two bicyclists simultaneously using the treadmill

Suitability Treadmill and Pair Bicycling 80%

Good but not optimal combination of skate treadmill and activity. Pair training on a bicycle demands experienced practitioners with a strong ability to work together. The effectiveness of training is influenced by both the length and width of the treadmill. For safe and effective pair training, we recommend opting for a longer and wider treadmill.

Belt Widths RL4000E

Rodby RL4000E is available with three belt widths: RL4000E x 2500, RL4000E x 2700, or RL4000E x 3000 mm. Below are the sizes of the belt shown next to each other and approximately how big a lying practitioner is in relation to the belts. Click to zoom images.

Rodby Control System

The Rodby RL3500E to RL5500E skate treadmills come equipped with Control System 2.0, inclusive of a computer, keyboard, mouse, touchscreen, Rodby pedestal, an emergency stop button on the control panel, and a ceiling-mounted emergency stop connected to a harness or waist belt.

The Control System 2.0 interface can be operated using the touchscreen or keyboard and mouse, providing flexibility based on your preference. For proximity usage next to the treadmill, touch control is recommended. Additionally, there is an option for Bluetooth® Remote Control (optional), allowing convenient adjustments to incline and speed without diverting attention from the exercise. External control of the treadmill via USB is also possible using the Trackmaster protocol. The interface is available in three languages: English, Swedish, and Chinese.


Rodby's large skate treadmills offer flexible installation options and can be installed either in an installation pit or standing on the floor in the room.

Nedsänkt i golvet.

Treadmill installed in pit

Rodby provides the flexibility to adapt the treadmill to the specific location and circumstances. All skate treadmills can be installed in an installation pit, ensuring that the treadmill's belt is only about 15 cm above floor level. However, it's important to note that installation in a pit requires a room that is specifically tailored for the skateband.

Stående på golvet.

Treadmill installed on the floor

The least intrusive installation method involves placing the treadmill directly on the floor. In this configuration, the treadmill's belt will be approximately 75 cm above the floor level when it is in the start position and not elevated. This method minimizes the need for room adaptation or intervention.

Pulse Control is standard

Rodby treadmills come equipped with Control System 2.0, featuring Pulse Control of belt speed as a standard feature. Pulse control requires a connected pulse band or pulse clock with Bluetooth® capability. This functionality enables users to set a target pulse (Target Pulse), and the control system automatically adjusts the speed of the belt to attain the user's desired pulse rate. This feature proves highly beneficial when aiming to stay within a specific pulse range for various training objectives, such as endurance training, fat burning, aerobic exercise, anaerobic exercise, or interval training. It provides users with a precise and controlled means of maintaining their desired cardiovascular intensity throughout their workout.

Track Simulation GPX is standard

Rodby treadmills equipped with Control System 2.0 offer an import function for GPX files created by a GPS device. This feature enables users to exercise on a simulated track, providing an excellent means to prepare for a race and train under conditions nearly identical to the real track. Utilize the Track Simulation GPX for your preferred home track in the forest or a competition track such as a marathon or the Vasaloppet. This functionality enhances the training experience, allowing for targeted and race-specific preparations.

Auto Positioning as Option

Rodby treadmills with Control System 2.0 can be enhanced with the Auto Positioning option. Auto Positioning enables the treadmill control system to utilize a stereoscopic motion sensor to read the position of the person training on the belt. It automatically adjusts the belt speed: increasing when the user moves closer to the front of the belt and decreasing when the person moves further back on the belt. This unique feature allows the practitioner to control the treadmill speed based on their own pace during the exercise. The stereoscopic motion sensor is sophisticated enough to discern the center point of the trainee while disregarding any equipment, such as swinging arms, poles, bicycles, wheelchairs, framerunners, and even outsiders entering the motion sensor's field of view. This ensures a personalized and responsive training experience, adapting to the user's position on the treadmill.

Professional Skate Treadmills

Rodby's large skating treadmills are utilized in various countries for exercises involving roller skiing, both classic and skate styles, bicycling, running, and wheelchair activities. Rodby provides complete adaptability to the location and purpose, ensuring versatility in meeting diverse fitness needs.

Popular options

Front support

Allows you to walk around the treadmill on three sides. Shown here with optional Front rail.

Auto ­Positioning

Users position is sensed and can increase or decrease belt speed.

Safety Framework

Safety Framework with Emergency Switch for extra security. Used with Safety Belt and Safety Line.

Safety Line with Carabiner

Used with Emergency Framework and Safety Belt.

Separate Emergency Switch

Separate Emergency Switch (requires roof or wall mounting).

Extra Emergency Stop Button

Extra Emergency Stop Button for mounting on the treadmill rails.

Pull Emergency Stop Switch

Mounted on the rail in front of the user.

Safety 4-point Harness

Safety 4-point Harness is used with Emergency Stop Framework and safety line.

Rodby Stand

Rodby Stand/Pedestal for Control Unit 2.0. With wheels.

Pole tips

Model “Karda” (looks like a Steel File Cleaning Brush).

Prices for treadmills and options are quoted. Contact us.

Skate treadmill RL3500E at Idrottshögskolan in Bergen Norway

Skate treadmill RL3500E at Idrottshögskolan in Alta Norway