Shoe Replacement Calculator
Estimate when your running or walking shoes need replacing based on your weekly mileage and shoe type.
Replacement Estimate
Shoe replacement depends on mileage, shoe type, and running surface.
Weeks Until Replacement = (Shoe Lifespan - Miles Already Run) / Weekly Miles
Typical shoe lifespan by type:
- Road running shoes: 300–500 miles (480–800 km)
- Trail running shoes: 300–500 miles (varies with terrain)
- Walking shoes: 500–700 miles (800–1,100 km)
- Racing flats: 100–200 miles (160–320 km)
- Cross-training shoes: 300–500 miles
Signs your shoes need replacing:
- Midsole feels compressed or flat
- Outsole tread is worn smooth
- New aches in feet, knees, or hips
- Visible creasing in the midsole
- Shoes are over 6–8 months old (foam degrades even without use)