Should I aim for even pace or even effort on hilly courses?

Even effort, not even pace. Pace naturally slows on uphills and picks up on downhills for the same effort level, so chasing a flat-course pace number on hilly terrain usually means overexerting on the climbs.

Pace Calculator

Q: How do I calculate running pace?

Divide your time by the distance. Running 5 miles in 45 minutes is 45 ÷ 5 = 9 minutes per mile. Pace is usually expressed as minutes and seconds per mile or per kilometre.

Q: What is a good running pace?

It varies widely by fitness and distance. A common recreational pace is 9–12 minutes per mile (5:30–7:30 per km); competitive runners go much faster. The right pace is one you can sustain for your target distance.

Q: How do I convert min/mile to min/km?

Divide the per-mile pace by 1.609. A 9:00 min/mile pace is about 5:35 per km. This calculator shows both automatically.

Q: Should I run a race at an even pace?

For most runners, yes — an even or slightly negative split (second half faster than the first) tends to produce a better result than starting fast and fading, especially over longer distances like the half marathon or marathon where an overly fast start often leads to a much larger slowdown later.

Solve for pace, time, or distance — enter any two and get the third, in both min/mile and min/km, plus common race finish times at your pace.

Written by the Calculator Index team · Last reviewed September 2026

Pace

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10K

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Half marathon

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Marathon

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The pace formula

Pace = Time ÷ Distance · Time = Pace × Distance · Distance = Time ÷ Pace
min/km = min/mile ÷ 1.609

Worked example

5 miles in 45:00 → pace = 45 ÷ 5 = 9:00 /mile (≈ 5:35 /km). At that pace, a marathon would take about 3:56.

Worked example — solving for distance, metric pace

You ran for 32:00 at a steady 8:00 /km pace. How far did you go?

Distance = Time ÷ Pace = 32 ÷ 8 = 4 km, which converts to 4 ÷ 1.609 ≈ 2.49 miles. This is the reverse of the first example: instead of dividing time by distance to get pace, you divide time by pace to get distance — useful when a GPS watch failed mid-run but you know your effort held steady.

Using pace to train and race

Knowing your pace turns vague effort into a plan: set a goal finish time, read off the pace you need, and practice holding it. The race-time projections above assume you sustain the entered pace evenly — realistic for shorter distances, optimistic for the marathon, where most runners slow in the later miles. A common approach is easy runs at a conversational pace and shorter, faster intervals near your target race pace. Pair with the target heart rate calculator to keep easy days easy, and the calories burned calculator to fuel long runs.

Common training paces, mile vs. kilometer

Min/mile	Min/km	Typical for
6:00	3:44	Competitive/sub-elite
7:00	4:21	Fast club runner
8:00	4:58	Strong recreational
9:00	5:36	Common recreational (see example above)
10:00	6:13	Easy / beginner
12:00	7:27	Walk/jog

Common pacing mistakes

Starting a race faster than goal pace. An even or slightly negative-split race tends to beat a fast start followed by a fade, especially over the half marathon and marathon.
Confusing a min/mile training plan with a min/km watch display (or vice versa). The two units differ by a factor of 1.609 — see the table above for common equivalents.
Chasing a flat-course pace number on hilly terrain. Effort, not pace, should stay steady on hills — pace naturally slows uphill and quickens downhill at the same effort level.

Frequently asked questions

How do I calculate running pace?

Time ÷ distance. 5 miles in 45 min = 9:00 /mile.

What is a good running pace?

Recreational is often 9–12 min/mile; the right pace is one you can sustain for the distance.

How do I convert min/mile to min/km?

Divide by 1.609. 9:00/mile ≈ 5:35/km (shown automatically).

Should I run a race at an even pace?

For most runners, yes — an even or slightly negative split usually beats starting fast and fading, especially in longer races like the half marathon or marathon.

Even pace or even effort on hilly courses?

Even effort. Pace naturally slows uphill and speeds up downhill at the same effort level, so chasing a flat-course pace number on hills usually means overexerting on climbs.

Related calculators

Note: Race projections assume an even pace and don't account for terrain, weather, or fatigue. Last reviewed: September 2026.