Fitness
🏃 Running Pace Calculator
Calculate pace, finish time, or required pace for 5K, 10K, half marathon, and marathon.
🏃 Pace Math
Pace
Time ÷ Distance
min/km or min/mile
Race prediction
Riegel formula
Pace slows ~6% per distance doubling
Running pace is time per unit distance. This tool converts between pace, speed, and finish time, and predicts race times.
🏅 Typical Times
5K beginner30–35 min
10K beginner55–70 min
Half marathon2:00–2:30
Marathon beginner4:00–5:00
💡 Pacing Tips
- ✓Negative split: finish faster
- ✓Start 10–15s/km slower than target
- ✓Even pacing is most efficient
- ✓Practice race pace in training
- ✓Adjust for hills and heat
📎 Also Try
The Art of Pacing
Starting too fast leads to glycogen depletion. Even pacing or slight negative splits produce the fastest times.