How do I find my pace from a race result?

Choose 'solve for pace', enter the distance you covered and your finish time, and pick miles or kilometres. The calculator divides time by distance and also builds a split table so you can see your pace at every mile or kilometre marker.

Can I use this to plan a goal race time?

Yes — switch to 'solve for time', enter the race distance and the pace you plan to hold, and it projects your finish time along with checkpoint splits, which is useful for pacing strategy before race day.

Why does the split table sometimes show a fractional final row?

When your total distance isn't a whole number of miles or kilometres (a marathon is 26.2 miles), the table adds one extra row for that partial final distance so the splits always add up to your full total time.

Does the pace value depend on which unit I choose?

Yes — pace is always expressed per the unit you select (mile or kilometre), so a 5:00 pace means 5 minutes per kilometre if you've chosen km, and 5 minutes per mile if you've chosen mi. Switch units and re-enter your numbers to convert between the two.

Running Pace Calculator

Convert between running pace, time and distance in one tool with a mile or kilometre toggle, plus a mile-by-mile or kilometre-by-kilometre split table.

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Formula: Pace = time ÷ distance; Time = pace × distance; Distance = time ÷ pace

Worked examples

Solve for pace: 10 km in 50 minutes
A flat 5:00/km pace, the simplest case for checking the splits table adds up correctly.
Solve for time: marathon at a 9:00/mi pace
Projects a full marathon finish time from a steady goal pace, mile by mile.
Solve for distance: 30 minutes at a 6:00/mi pace
A fixed 30-minute training run at a known pace, showing how far that effort covers.

What this calculator does

Pace, time and distance are three sides of the same equation — know any two and you can always find the third. This tool lets you solve for whichever one you're missing: find your pace from a finished run, project a finish time from a goal pace, or work out how far a fixed amount of time at a known pace will actually cover. A mile/kilometre toggle keeps the whole calculation in whichever unit you train in, and a split table breaks the result down checkpoint by checkpoint.

The math behind it

The relationship is simply pace = time ÷ distance, rearranged depending on which value you're solving for: time = pace × distance, or distance = time ÷ pace. There's no published formula to cite here beyond basic arithmetic — the value this tool adds is doing the unit handling and the checkpoint math for you, and building a full split table instead of a single number.

Reading the split table

Every result includes a table showing cumulative time at each mile or kilometre marker, using your calculated pace held constant throughout. If your total distance isn't a whole number of units — a marathon is 26.2 miles, not 26 — the table adds one final row for that partial distance so the numbers add up to your full total. Compare your actual watch splits against the projected splits to see whether you're running even, fading, or ahead of target as the distance goes on.

Solving for pace vs. time vs. distance

Solve for pace is the most common use — enter a distance you've run and the time it took, and get your average pace. Solve for time flips this around for race planning: enter your target distance and the pace you intend to hold, and see a projected finish time before you start. Solve for distance answers a different question — given a fixed block of time (say, a 30-minute lunch run) and a pace you know you can hold, how far will that actually take you.

Using it well

Pace from a single run is only as reliable as that run was representative — a downhill loop or a short interval won't predict your pace on flat, sustained terrain. For race planning, use "solve for time" with a pace you've proven you can hold in training, not just your fastest recent effort; overly optimistic goal paces are the most common cause of a slow second half. Pair this with the race time predictor for a pace built from Riegel's formula instead of a self-chosen number.

Limits

This tool assumes a perfectly even pace throughout — real runs speed up, slow down, and respond to terrain, weather and fatigue in ways a constant-pace split table can't capture. Use it for planning and post-run analysis, not as a guarantee of what any specific run will feel like. This is a training-planning tool, not medical or coaching advice — build up mileage and pace gradually and consult a professional if you have a health condition that affects exercise.

Frequently asked questions

How do I find my pace from a race result?: Choose 'solve for pace', enter the distance you covered and your finish time, and pick miles or kilometres. The calculator divides time by distance and also builds a split table so you can see your pace at every mile or kilometre marker.
Can I use this to plan a goal race time?: Yes — switch to 'solve for time', enter the race distance and the pace you plan to hold, and it projects your finish time along with checkpoint splits, which is useful for pacing strategy before race day.
Why does the split table sometimes show a fractional final row?: When your total distance isn't a whole number of miles or kilometres (a marathon is 26.2 miles), the table adds one extra row for that partial final distance so the splits always add up to your full total time.
Does the pace value depend on which unit I choose?: Yes — pace is always expressed per the unit you select (mile or kilometre), so a 5:00 pace means 5 minutes per kilometre if you've chosen km, and 5 minutes per mile if you've chosen mi. Switch units and re-enter your numbers to convert between the two.

These calculators give general estimates from published formulas. They are not medical advice and do not account for your individual health; talk to a qualified professional before changing your diet or training.