Calculate your pace, finish time, or distance covered — with race predictions for 5K, 10K, half marathon, and marathon.
| Level | Pace /km | Pace /mile | Speed |
|---|---|---|---|
| Elite | 3:00 | 4:50 | 20 km/h |
| Sub-elite | 3:30 | 5:38 | 17.1 km/h |
| Competitive | 4:00 | 6:26 | 15 km/h |
| Club runner | 5:00 | 8:03 | 12 km/h |
| Recreational | 6:00 | 9:39 | 10 km/h |
| Beginner | 7:30 | 12:04 | 8 km/h |
A "good" running pace depends on your distance and fitness level. For recreational runners, a comfortable pace of 5:30–7:00 min/km (9:00–11:00 min/mile) is typical. Competitive club runners often target 4:00–5:00 min/km. For context, a 5:00 min/km pace is equivalent to 12 km/h, which means finishing a 5K in 25 minutes. Focus on consistency over pace when starting out — improvements follow naturally.
To estimate your finish time, multiply your pace (in minutes per km or mile) by the race distance. For example, if you run at 5:30 min/km, a 10K finish time is 5.5 × 10 = 55 minutes. A half marathon is 5.5 × 21.0975 ≈ 116 minutes (1h 56m). This calculator handles the math automatically — enter your distance and pace and the race predictor shows all common race times at once.
Speed (km/h) = 60 ÷ pace (min/km). For example, a pace of 5:00 min/km equals 60 ÷ 5 = 12 km/h. To convert to mph, divide km/h by 1.60934. So 12 km/h ≈ 7.46 mph. Conversely, pace (min/km) = 60 ÷ speed (km/h). This calculator performs both conversions and displays them together with your result.
A negative split means running the second half of a race faster than the first. It is widely considered the optimal race strategy because it prevents early burnout and takes advantage of a well-rested cardiovascular system. World records in distances from 800 m to the marathon are often set with negative or even splits. To achieve a negative split, start conservatively — aim for 5–10 seconds per km slower than your goal pace in the first half.
HC Webhook streams your workout distance, duration, heart rate, and pace data to any endpoint on a schedule — so your training logs are always up to date.
