Pace Calculator (Running)
Convert finish time ↔ pace per km/mile + predicted finish times for 5K, 10K, half marathon, marathon.
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Pace Calculator (Running)
Generated on April 25, 2026
Predicted finish times at this pace
These assume you sustain the same pace — race times are usually 5–10% slower for longer distances due to fatigue.
Step-by-step calculation
Formula
Pace = total time ÷ distance. Speed = distance ÷ time. 1 km = 0.621 miles.
- 11 km equals 0.621371 miles.
- 2Pace per km = total minutes ÷ kilometres.
- 3Speed (km/h) = distance ÷ time (hours).
- 4World-class marathon pace is ~2:50 min/km. A typical recreational runner targets 5–7 min/km.
- 5For walks, brisk walking is ~10–12 min/km (5–6 km/h).
?What is the Pace Calculator (Running)?
The Pace Calculator converts between finish time, distance, and running pace — the three numbers every runner cares about. Enter any two and get the third, plus your sustained speed in km/h and mph, and predicted finish times for the four classic race distances (5K, 10K, half marathon, marathon). Pace is reported in both min/km (the metric standard used in Pakistan, Europe, Asia, and most of the world) and min/mile (US, UK, common in older training plans). The predicted-time table assumes you can hold the same pace; in reality, race times are typically 5–10% slower for longer distances due to fatigue, so use the predictions as upper-bound estimates.
The Formula
Pace and speed are reciprocals dressed up differently — runners think in pace (small numbers; smaller is faster) while drivers think in speed (small numbers; bigger is faster). A 4:00 min/km pace = 15.0 km/h; a 6:00 min/km pace = 10.0 km/h; a 10:00 min/km pace (slow jog / brisk walk) = 6.0 km/h. Race-time prediction at sustained pace is the simple linear extrapolation; serious training uses Riegel's formula (T2 = T1 × (D2/D1)^1.06) which accounts for fatigue.
Pace ↔ Speed Reference Table
Common training and racing paces with equivalents in min/km, min/mile, km/h, and mph.
| Pace (min/km) | Pace (min/mile) | Speed (km/h) | Speed (mph) | Description |
|---|---|---|---|---|
| 3:00 | 4:50 | 20.0 | 12.43 | World-class sprint endurance (5K record territory) |
| 4:00 | 6:26 | 15.0 | 9.32 | Elite recreational / strong amateur |
| 5:00 | 8:03 | 12.0 | 7.46 | Strong recreational |
| 5:30 | 8:51 | 10.91 | 6.78 | Solid recreational |
| 6:00 | 9:39 | 10.0 | 6.21 | Average recreational pace |
| 7:00 | 11:16 | 8.57 | 5.33 | Easy / recovery pace |
| 8:00 | 12:53 | 7.5 | 4.66 | Slow jog / fast walk |
| 10:00 | 16:06 | 6.0 | 3.73 | Brisk walking pace |
| 12:00 | 19:19 | 5.0 | 3.11 | Casual walking |
Put It in Perspective
A 1:20:00 half marathon (3:48 min/km) puts you in roughly the top 5% of recreational half-marathoners.
Eliud Kipchoge's sub-2-hour marathon attempt (1:59:40, Vienna 2019) = 2:50 min/km — held for 42 km.
The Boston Marathon qualifying time for a 35-year-old male is 3:00:00 = 4:16 min/km — one of running's iconic benchmarks.
A typical 5K parkrun finisher averages 25-30 minutes (5:00-6:00 min/km).
Practical Examples
5K in 25:00 = 5:00 min/km pace = 12.0 km/h average — a comfortable recreational pace.
10K in 50:00 = 5:00 min/km pace, sustained for double the distance — very respectable amateur level.
Marathon in 4:00:00 (4 hours) = 5:41 min/km pace = 10.55 km/h — a popular amateur target.
Sub-3-hour marathon (2:59:59) = 4:16 min/km pace = 14.07 km/h — competitive amateur / fast age-group level.
World record marathon (Kelvin Kiptum, 2:00:35) = 2:51 min/km = 21.0 km/h — sustained for 42 km.
5 km/h is brisk walking pace = 12:00 min/km. Compare your running pace to this baseline.
Frequently Asked Questions
Popular Conversions
Jump to a ready-made conversion — useful for quick reference and sharing: