August 7, 2026
Wheel deal drama
Physicist Rigged His Pet Hamster's Wheel to Strava. It Runs Far Every Night
This tiny night runner just embarrassed half of Strava and the comments loved it
TLDR: A physicist gave his hamster’s wheel a tracker and now the pet uploads miles of nightly runs to Strava like a serious athlete. Commenters were obsessed, with some showing off rival pet-tracking builds and others noting the hamster’s mileage is normal science-lab behavior, not a furry superpower.
A Dutch physicist turned his hamster Mollie into an accidental fitness influencer, and the internet’s reaction was basically: of course this is what modern exercise culture has become. By attaching a simple wheel tracker and auto-posting the results to Strava — the app runners use to log workouts — he gave his pet nightly stats, goofy run titles, and even a paid premium account. Yes, the hamster now has better workout data than most humans.
But the real show was in the comments, where people swung between delight, nerdy one-upmanship, and light skepticism. One commenter immediately dropped Mollie’s Strava link like they were introducing a rising sports star. Another jumped in with a classic internet flex: neat hamster project, but they’d already built something similar for their cat’s exercise wheel. Suddenly this became less “cute pet story” and more underground animal wearables arms race.
There was also a sneaky reality check from science-minded readers, who noted that hamsters and mice running huge overnight distances is actually pretty normal. In other words: Mollie isn’t a miracle athlete, he’s just finally getting the credit. The funniest mini-debate came from people wondering whether Mollie’s oddly consistent start time says more about the hamster’s body clock… or his owner’s bedtime routine. Either way, the comments treated this like the perfect mashup of pet chaos, quantified-self obsession, and Strava comedy. The verdict? Adorable, absurd, and weirdly impressive.
Key Points
- •Thijs de Buck built a sensor-based system that tracks his hamster Mollie’s wheel activity and uploads it to Strava automatically.
- •The project evolved from an initial bicycle-computer setup that failed to track runs reliably after inactivity and only reported total distance.
- •The final system uses a magnet, hall sensor, ESP32, a laptop script, a .FIT file conversion process, and the Strava API.
- •De Buck added extra features including a live-speed OLED display, automated personal-best tracking, and a large set of run titles.
- •Within a week, Mollie’s Strava account had more than 1,200 kudos and over 600 followers, while Mollie averaged nearly 10 kilometers per night.