Marathon Pace Calculator
Calculate marathon pace per kilometer and mile for 3:00, 3:30, 4:00, 4:30 or any goal time. See halfway splits and plan a practical race pace.
Calculate marathon pace →Running Pace Calculators & Race Planning Tools
Choose a calculator by race distance or by the planning task you need to solve. Every tool runs in your browser, supports metric and imperial units where relevant, and links to a printable race plan without requiring an account.
Quick check
Find a pace without leaving this page
Enter a distance and finish time to get pace per kilometer and mile.
5:00 /km8:03 /mi
Find a tool
Search all calculators
Search examples: treadmill, pace chart, negative split, marathon.
Pace calculators by race distance
A distance-specific calculator sets the official race distance for you, so a goal finish time can be converted into pace without retyping 5 km, 10 km, 21.0975 km, or 42.195 km. Each page also includes common goal times, a halfway checkpoint, and unit conversions.
Half Marathon Pace Calculator
Calculate half marathon pace per km and mile for a 1:30, 1:45, 2:00 or custom goal time. See speed, halfway split and a practical pacing table.
Calculate half marathon pace →10K Pace Calculator
Calculate 10K pace for a 40, 45, 50, 55 or 60-minute goal. See pace per kilometer and mile, speed, halfway split and a practical 10K pacing table.
Calculate 10K pace →5K Pace Calculator
Calculate 5K pace for a 20, 25, 30, 35 or 40-minute goal. See pace per kilometer and mile, speed, halfway split and a simple 5K pacing table.
Calculate 5K pace →General pace and split tools
Running pace calculator
Find pace, finish time, or distance from any two inputs, with km and mile results plus speed conversions.
Open calculator →Splits calculator
Build running, race, lap and 400m track splits with cumulative and segment times that can be printed.
Open calculator →Negative split calculator
Compare a faster second half with a positive split, while keeping the total finish time fixed.
Open calculator →Pace charts and treadmill tools
5K Pace Chart
Compare 5K finish times from 12 to 45 minutes with pace per kilometer, pace per mile, and 1K checkpoint splits. Plan a 5K target pace.
Open tool →10K Pace Chart
Compare 10K finish times from 35 to 70 minutes with pace per kilometer, pace per mile, and halfway splits. Find the pace for a 45, 50, or 60-minute 10K.
Open tool →Half Marathon Pace Chart
Half marathon pace chart from 1:30 to 4:00 with pace per kilometer, pace per mile, and 5K, 10K, and 10-mile checkpoint splits.
Open tool →Marathon Pace Chart
Marathon pace chart from 3:00 to 6:00 with pace per kilometer, pace per mile, and 5K, 10K, half marathon, and 30K checkpoint splits.
Open tool →Running pace chart hub
Compare 5K, 10K, half marathon and marathon pace charts in one place.
Open tool →Treadmill pace chart and calculator
Convert MPH or KPH to pace per mile and kilometer, with flat-treadmill charts and race times.
Open tool →Pace to finish time chart
Compare one pace across 1K, 1 mile, 5K, 10K, half marathon, marathon and 50K.
Open tool →Pace band generator
Create a printable pace band with even or negative splits for race day.
Open tool →Goal-time race calculators
Start with the exact result you want, such as a sub-4 marathon or a 50-minute 10K. Each page preloads the target pace and shows the most useful race checkpoints.
Sub 4 Hour Marathon Pace
See the pace required to break a 4-hour marathon: 5:41 per kilometer or 9:09 per mile, with halfway, 30K and split checkpoints.
Open goal calculator →Sub 2 Hour Half Marathon Pace
See the pace for a sub 2 hour half marathon: 5:41 per kilometer or about 9:09 per mile, with 5K, 10K, 10-mile and finish checkpoints.
Open goal calculator →50 Minute 10K Pace
See the pace for a 50-minute 10K: exactly 5:00 per kilometer or about 8:03 per mile, with 1K, 5K and finish checkpoints for race day.
Open goal calculator →Sub 30 Minute 5K Pace
See the pace for a sub 30 minute 5K: 6:00 per kilometer or about 9:39 per mile, with 1K, 2.5K and finish checkpoints.
Open goal calculator →Which calculator should I use?
| You want to… | Use this tool |
|---|---|
| Find the pace for a known time and distance | Running pace calculator |
| Plan a 4-hour marathon or 2-hour half | Marathon or half marathon calculator |
| Check a 30-minute 5K or 50-minute 10K | 5K or 10K pace calculator |
| Build a lap-by-lap table | Race split calculator |
| Plan a faster second half | Negative split calculator |
Why use a running pace calculator?
Pace is useful because it converts a race goal into a number you can compare during training. A finish time is easy to understand but hard to monitor at kilometer five. Pace gives you a repeatable target, and a split table turns that target into checkpoints. The calculation is simple — time divided by distance — but unit conversion and rounding are where many race plans go wrong.
RunPaceKit keeps the underlying distance in meters and time in seconds, then rounds only the displayed result. That means switching from minutes per kilometer to minutes per mile does not silently change your goal. The split planner also ensures that displayed segment times add back to the target finish time instead of drifting because of independent rounding.