Shoe mileage log: manage training-shoe use locally

What to record

Give each pair a name, enter any distance already on it (use 0 if new) and the mileage at which you want a reminder. After each run, record the date, shoe and distance. The tool totals mileage, run count, distance remaining to the reminder and reminder progress.

The reminder is your own setting, not a manufacturer recommendation or a “replace at this number” lifespan. Foam, outsole, body weight, surface and training style all affect wear.

A reminder is not a lifespan

There is no universal replacement mileage for running shoes. Worn-through outsole, collapsed foam, a torn upper, markedly asymmetric wear or new pain are more useful signals than a single number. Treat the reminder as a prompt to inspect the shoe, not an automatic replacement order.

Rotating several pairs may spread wear, but neither “always rotate” nor “always use one pair” is supported for everyone. Logging a few pairs helps you see which shoe feels better on which surface and distance.

Local data and privacy

Records are stored in this browser's localStorage. They are not uploaded to a server and no account is required. Clearing browser data, changing devices or using a private window can remove the log; back it up yourself if it matters.

The tool does not read location, track files or health data. It stores only shoe names, dates and distances. Do not put addresses, names or other sensitive information in a shoe name.

When to inspect or replace

Check the outsole, toe box and upper after long runs. Consider replacement when grip falls clearly, foam loses resilience, the upper tears or the shoe keeps causing discomfort. New shoes still need gradual adaptation; do not wear them for the first time on race day.

If pain persists, or you notice swelling, numbness or a change in gait, stop the relevant training and seek medical or sports-professional assessment; a new shoe may not fix load or technique issues.

Tool limits

This tool does not recommend brands or models, decide whether a shoe is “dead” or diagnose foot or lower-limb pain. The reminder is a personal management value.

Sources and scope

Shoe comfort and injury associations follow a secondary analysis; shoe, pain and help-seeking advice follows the NHS; carbon-plate and advanced-footwear evidence follows a systematic review. The tool only totals local records and does not guarantee shoe lifespan or safety.

{
  "shoe": {
    "id": "shoe-1",
    "name": "Daily trainer",
    "initialKm": 100,
    "reminderKm": 600
  },
  "runs": [
    {
      "id": "run-1",
      "shoeId": "shoe-1",
      "date": "2026-10-27",
      "distanceKm": 10
    },
    {
      "id": "run-2",
      "shoeId": "shoe-1",
      "date": "2026-10-28",
      "distanceKm": 5
    }
  ]
}

{
  "totalKm": 115,
  "runCount": 2,
  "remainingKm": 485,
  "percentOfReminder": 19.2,
  "lastRunDate": "2026-10-28"
}