Time & Date · Travel & Distance
Running & Walking Pace Calculator
Enter a distance and how long it took to get your running or walking pace per kilometre and per mile, your speed, even splits, and predicted times for 5K, 10K, half marathon and marathon.
A ready-made version of the Speed, Distance & Time Calculator.
Your inputs
Quick start — try a typical case
Your result Live
Your Pace
5:15 min/km
8:27 min/mile · 11.43 km/h
- Speed
- 11.43 km/h · 7.101 mph
- Pace per mile
- 8:27 min/mile
Predicted race times (Riegel formula)
4 rowsEven splits: 1 km 5 min 15 s · 2 km 10 min 30 s · 3 km 15 min 45 s · 4 km 21 min · 5 km 26 min 15 s …
How this is calculated
Speed = Distance ÷ Time · Time = Distance ÷ Speed · Distance = Speed × Time · Pace = Time ÷ Distance
- Units
- Converted through metres and seconds using exact definitions (1 mi = 1,609.344 m; 1 knot = 1,852 m/h)
- Pace
- Minutes per km or per mile — the inverse of speed, used by runners
Speed, distance and time are linked by one formula: distance = speed × time. Give any two and the third follows. The calculator converts everything through metres and seconds, so you can mix units — a 350 km drive at 70 mph, or a 10 km run at 5:30 per km. Stops are added to the travel time, and the average speed including stops shows the realistic pace of a trip.
Assumptions & sources
- Speed is an average over the whole distance.
- Arrival time assumes departure and arrival in the same time zone.
- 1The International System of Units (SI Brochure) — BIPM
- 2Athletic Records and Human Endurance (Riegel, 1981) — American Scientist
Calculator ID TRV-SDT-001/pace · version 1.0.0
Common questions
How are race times predicted?
With Riegel's formula, T₂ = T₁ × (D₂ ÷ D₁)^1.06, which allows for slowing down over longer distances. It works best between similar distances and assumes training for the longer one.
What is a good running pace?
Recreational runners often run 5:30–7:00 min/km; brisk walking is around 9–11 min/km.