Runners | OnTracx

>80%

of all injuries are caused by too much biomechanical load

up to 50%

of all runners relapse within a year after rehab

3-4x

your own bodyweight of load needs to be absorbed every step you take

From award-winning science to in-the-field technology

Discover the science behind every step

50%

of all runners sustain at least one running injury every year

For who?

For runners who want to train smarter

Return-to-run

Return from setbacks or recurring discomfort

Run smarter

Training consistently near personal limits

Start-to-run

Gradually working toward goals with evidence-informed insights

How it works

Understand your running in 4 steps

step 1

Discover your load tolerance profile

Understand how much load you can tolerate and get your recommended load progression

step 2

Measure your running load

Strap on the OnTracx sensor and track load across every run

step 3

Gradual individualized progression

Follow your advised load progression that aligns your load capacity with your loading profile

step 4

Use insights to guide decisions

Adjust training thoughtfully, stay consistent, and gain confidence

Seamlessly integrated with your ecosystem

Get started today

Train smarter, your way

Download the OnTracx app to track every run, see your load patterns, and gain actionable insights. Whether you run independently or with an expert by your side.

Buy your OnTracx sensor now

Trusted by runners

“Not a miracle solution, but the right insights to train more intelligently. I'm a big fan."

“Not a miracle solution, but the right insights to train more intelligently. I'm a big fan."

Read this story

“It was amazing to see my progress clearly and know exactly what my body could handle on each run.”

“It was amazing to see my progress clearly and know exactly what my body could handle on each run.”

Read this story

"OnTracx really helped me to stay injury-free this year!"

"OnTracx really helped me to stay injury-free this year!"

“Can’t run without it.”

“Can’t run without it.”

“OnTracx gives you more confidence that you can run to improve your health without jeopardizing it.”

“OnTracx gives you more confidence that you can run to improve your health without jeopardizing it.”

"As a runner with a history of injuries, OnTracx gives me clear insights into my load, helping me work efficiently with the guidance of my physiotherapist."

"As a runner with a history of injuries, OnTracx gives me clear insights into my load, helping me work efficiently with the guidance of my physiotherapist."

“I love the OnTracx sensor! I use it during every run, mainly to avoid overloading.”

“I love the OnTracx sensor! I use it during every run, mainly to avoid overloading.”

"I was surprised by how much load my body has to endure during every run, and how much it changes between runs. I now use OnTracx to gradually increase the load week by week, instead of only focusing on running speed and distance."

"I was surprised by how much load my body has to endure during every run, and how much it changes between runs. I now use OnTracx to gradually increase the load week by week, instead of only focusing on running speed and distance."

"I was surprised by how much load my body has to endure during every run, and how much it changes between runs. I now use OnTracx to gradually increase the load week by week, instead of only focusing on running speed and distance."

"I was surprised by how much load my body has to endure during every run, and how much it changes between runs. I now use OnTracx to gradually increase the load week by week, instead of only focusing on running speed and distance."

Read user stories

Your running,
made visible

Buy your OnTracx sensor now

Insights

Evidence-informed. Practice-driven. Always evolving.

Get to know the science, the journey, and the people behind OnTracx

Read insights

Blog

06

/

11

/

2025

6

min read

What's broken in return-to-run?

Most running injuries develop gradually when training outpaces the body’s ability to adapt. While rehab restores function and builds load tolerance, nearly half of runners remain stuck in the injury–rehab–relapse cycle. OnTracx supports breaking this cycle with smarter load management for safe return to run.

Blog

10

/

03

/

2025

5

min read

Breakdown of common training errors that may lead to running injuries and how to prevent them

Up to 79% of runners get injured at some point, often due to training errors. A high number of these injuries could be avoided with the right training adjustments using wearable technology for an individualized approach to load management. In this article, we’ll break down common training errors, their impact, and how to prevent them.

White paper

10

/

12

/

2024

10

min read

Biomechanical load management: the missing piece in return-to-run

Get to know the people behind the science

Meet the team

Explore job vacancies

News

23

/

04

/

2024

2

min read

Ghent University spin-off OnTracx launches innovative tool for prevention and rehabilitation of running injuries

More than half of all runners experience overloading at least once a year, resulting in painful joints or tendons. With OnTracx, the wearable and app from Ghent University’s new spin-off, you can now easily measure your load and thus reduce the risk of injury, or speed up rehabilitation.

Dive into the science behind OnTracx

Explore the science

User Story

08

/

03

/

2026

2

min read

Breaking the injury cycle: Sofie’s comeback story

After years of recurring injuries, Sofie struggled to rebuild her running without setbacks. By using OnTracx alongside guidance from her physiotherapist, she gained clear insights into her biomechanical load and followed a structured, gradual progression. This allowed her to train with confidence, avoid overloading, and finally return to running without falling back into the same frustrating cycle.

Resource

10

/

12

/

2024

2

min read

Maximizing the value of your OnTracx investment

See how OnTracx delivers value: integrate seamlessly into your practice and explore ways to recover your investment.

Questions runners often ask

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Help center