Walk / Run Interval Timer

Configurable walk/run interval timer. Set run and walk durations, number of rounds, and get audio cues for each switch.

Run duration (s)

Walk duration (s)

Rounds

Warm-up walk (s)

About Walk/Run Interval Timer

Interval training alternates running and walking to build aerobic fitness progressively. The C25K (Couch to 5K) programme uses 8-week progressions starting with 60s run / 90s walk. Audio cues (Web Audio API) signal each switch. The warm-up walk prepares muscles and reduces injury risk.