Travel Pace Calculator

Convert between pace and speed and project finishing times.

About Travel Pace Calculator

Pace and speed are reciprocals, so pace is the natural unit when the distance is fixed and speed when the time is. Projecting a longer distance at the same pace ignores fatigue and so understates the time. Linear projection from a half marathon to a full one typically understates finishing time by five to ten per cent, because pace degrades with duration.

Formula

Travel Pace

Pace = duration ÷ distance; speed = distance ÷ duration

pace: Time per unit distance, the inverse of speed

Worked example

With the default values below, Travel Pace Calculator returns Pace of 5.4509. Change any input above and every figure here is recalculated in your browser.

Inputs used

Distanceminimum 0.001 km: 21.0975 km
Durationminimum 0.01 min: 115 min
Target distance for projectionminimum 0 km: 42.195 km

Results

Pace: 5.4509 min/km
Speed: 11.007 km/h
Pace per Mile: 8.7723 min/mile
Projected Time at the Target Distance: 230.0 min
Pace: 5:27 per km

Step by step

1Values used
2Travel Pace
3Pace= 5.4509 min/km
4Speed= 11.007 km/h
5Pace per Mile= 8.7723 min/mile
6Projected Time at the Target Distance= 230.0 min
7Pace= 5:27 per km

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is Travel Pace calculated?

Pace = duration ÷ distance; speed = distance ÷ duration Pace and speed are reciprocals, so pace is the natural unit when the distance is fixed and speed when the time is. Projecting a longer distance at the same pace ignores fatigue and so understates the time.

Why does Travel Pace matter?

Linear projection from a half marathon to a full one typically understates finishing time by five to ten per cent, because pace degrades with duration.

What values do I need to enter?

This calculator takes 3 inputs: Distance, Duration, Target distance for projection. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.