Running Browser

Running Browser · Running guides and tools

Weather-adjusted running pace calculator

Explore an estimated pace on flat, paved ground in mild, dry and windless conditions. Use your recorded pace and the conditions from your run.

Enter your run

How to read the estimate

This uses the same ideal-conditions engine as the app, with its default thresholds: wind above 5 km/h, climbing from 50 m, heat above 22°C and cold below 5°C. It does not use your personal account settings.

The wind and hills models assume a loop. Route direction, gusts, shelter, humidity and individual responses are not modeled. This is a comparison tool, not a race prediction or a recommended pace.

Set climbing and unpaved share to zero to isolate weather. Leave temperature at 15°C and precipitation dry to isolate wind.

Keep the plan and the run together

Use the free training log and planner. Create an account to save your running across devices, then connect Strava from Settings → Integrations.

Create a free account Try the training planner