Running Shoe Replacement Calculator

Estimate when to replace your running shoes based on weekly mileage, body weight, surface, and shoe type.

Inputs

Weekly Mileage

miles

Body Weight

lbs

Primary Surface

Shoe Type

Tab to move between fields

Results

Shoe Lifespan

428 miles

≈ 16 marathons

Weeks Until Replace

17 weeks

Cost Per Mile$0.30

How to Use This Calculator

Enter Weekly Mileage, Body Weight, and Primary Surface.
Set Road, Trail, and Track.
Adjust Shoe Type, Neutral as needed.
Review Shoe Lifespan (miles) and Weeks Until Replace (weeks).
Use Cost Per Mile ($) to inform your decision.

How the result changes with Body Weight

Body Weight	Shoe Lifespan	Weeks Until Replace
112	450 miles	18 weeks
192	403 miles	16 weeks
288	295 miles	12 weeks
368	205 miles	8 weeks

What each input means

Weekly Mileage: Average miles you run per week
Body Weight: Your body weight (heavier runners wear shoes faster)
Primary Surface: Surface you run on most often
Shoe Type: Type of running shoe

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Weekly Mileage = 25, Body Weight = 170, Primary Surface = 1, Shoe Type = 1 = 4 input(s) provided
Calculate Shoe Lifespan
Shoe Lifespan
428 = 428
Calculate Weeks Until Replace
Weeks Until Replace
17 = 17

Engine last updated July 11, 2026. Checked against 3 independently-derived tests — how we verify calculators.

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