The quiet math
behind better shoes.
A small library for runners who want clearer mileage, smarter rotations, and better replacement timing without turning their shoe closet into a spreadsheet.
Five decisions shape the life of every running shoe.
The pages below are arranged like a runner actually thinks: first know the mileage, calculate the timing, understand lifespan, balance the rotation, then let sync keep the log current.
Track mileage by shoe
Give every pair its own odometer and stop guessing which shoes absorbed which miles.
Calculate replacement timing
Estimate the date a shoe will hit its target based on weekly mileage and rotation size.
Know when to replace a pair
Turn mileage totals into replacement timing before the midsole quietly fades.
Build a smarter rotation
Keep daily trainers, workout shoes, trail shoes, and long-run pairs in the right lanes.
Connect Strava to your shoes
Let synced activities keep shoe mileage current without rebuilding your log by hand.
Know when running shoes are done
Use mileage, feel, and shoe role together instead of waiting for a pair to look destroyed.
Plan shoes by run type
Map easy runs, long runs, workouts, trail days, and race efforts to the right shoes.
Track shoe mileage from Apple Health
Turn Apple Health running history into per-pair mileage and replacement timing.
Use a dedicated Strava gear tracker
Keep Strava as the run log while Treadly handles shoe lifecycle, rotation, and wear status.
Frequently asked
Start with mileage. Once every shoe has a reliable total, lifespan and rotation decisions become much clearer.