
Pace Calculator
Enter the race distance and your desired finish time; it'll tell you what pace you should maintain on average. Useful after you complete a race course for the first time and want to improve.
Pace Calculator
Figure out race pace from finish time — or predict finish time from pace. Units in mi/km, speed in mph/km/h.
Tip: Set a race preset or enter a custom distance (toggle miles/km). Use Tab to move quickly through fields.
Distance:—
Finish Time:—
Pace / Mile:—
Pace / Km:—
Speed:—
Splits (optional)
Marker | Elapsed | Remaining |
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Heart Rate Zones | Sendō
Discover your personalized heart rate training zones using the Karvonen formula. This calculator helps you optimize workouts for endurance, fat burning, and recovery.

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