Running pace calculator

Enter a distance and target time — get your pace, the exact treadmill speed to set, km splits to check against mid-run, and what the same fitness predicts at other race distances. Everything runs in your browser; nothing is uploaded.

Distance (km)

Target time

Minutes (27.5), 27:30, or 1:55:00

Km splits

Km	Cumulative

Same fitness at other distances

Race	Time	Pace	Treadmill

Riegel prediction model (exponent 1.06) — estimates assume comparable training for the longer distance.

Train against real routes, not just numbers

gym2x converts real GPX routes into treadmill incline programs, auto-logs your runs from Strava, and tracks fitness metrics like ACWR and VDOT over time.

Request access → Try the GPX → treadmill converter