Calculate running pace, speed, and splits in seconds. Enter distance and total time to get pace per km and per mile, average speed (km/h, mph), and projected finish times from 400 m to marathon.
Enter distance and total time to calculate pace, speed, and split times for popular race distances.
Use whole numbers. Minutes and seconds are 0-59. Max distance 1000 km.
Running pace is the time it takes to cover a unit of distance. Most runners track pace as minutes per kilometer (min/km) or minutes per mile (min/mi), and a lower pace number means you are moving faster. This pace calculator uses your total time and distance to compute pace per kilometer and pace per mile, then converts that pace into average speed in km/h and mph. It also estimates split times and finish time projections for common race distances like 400 m, 1 km, 1 mile, 5K, 10K, half marathon, and marathon so you can compare workouts and plan race strategies.
Formula: Pace = Total Time / Distance
Speed: Speed = Distance / Total Time
Pace is one of the simplest ways to describe training intensity, but it changes with terrain, weather, fatigue, and surface. Easy run pace is typically slower than race pace, tempo pace often sits near 10K to half marathon effort, and interval pace is faster and used to build speed and aerobic capacity. With this running pace calculator, you can connect a target distance and time to a clear pace number, then use that pace to plan workouts, compare effort across runs, and decide whether you are on track for your goal race.
If you are new to running, start with a comfortable pace and build volume before chasing speed. If you are preparing for a specific event, enter your goal finish time to reverse engineer the pace you need, then practice that pace during key sessions. Over time you can adjust the goal based on progress and conditions.
Split times show how long each segment would take if you held a steady pace. The split table in this pace calculator uses your calculated pace to estimate 400 m, 1 km, 1 mile, 5K, 10K, half marathon, and marathon times. This is useful for race strategy because it converts one effort into a full set of checkpoints. If your goal is even pacing, keep each split close to the projection. If you want a negative split, run the early segments slightly slower and the later ones slightly faster. These projections are estimates, but they provide a clear baseline for planning.
Easy run: 6:30-8:30 min/km (10:30-13:40 min/mi)
Tempo run: 4:40-5:40 min/km (7:30-9:10 min/mi)
Race pace: 3:30-5:00 min/km (5:40-8:00 min/mi)
Recovery run: 7:00-9:00 min/km (11:15-14:30 min/mi)
Ranges vary widely by experience and conditions.
Use this pace calculator to convert treadmill speeds to outdoor pace, compare mile splits to kilometer splits, or estimate how a strong 5K performance might translate to a 10K or half marathon. It is also helpful for pacing long runs, setting tempo targets, or checking whether your current training pace matches a desired race finish time.
Common questions about running pace, speed conversion, split times, and finish time estimates.
Running pace is the time required to cover a set distance, usually shown as minutes per kilometer or minutes per mile. A lower pace value means a faster speed.
Pace is time per unit distance (min/km or min/mi), while speed is distance per unit time (km/h or mph). They are inverses with different units, and this calculator converts both automatically.
Yes. After you enter distance and time, the split table projects common race distances at the same pace. It is a helpful baseline for planning goals and pacing strategy.
Use the unit required by your race or training plan. Many international races use kilometers, while some US events use miles. For consistent tracking, stick to one unit when comparing workouts.
The calculator assumes an even pace, but outdoor runs vary with hills, wind, surface, and fatigue. Use the result as a reference and adjust based on conditions.
Start with the average pace from your goal finish time, then run the first half slightly slower and the second half faster. The split table makes it easy to set targets for each segment.
Use the km/h or mph output to match treadmill settings. This is especially useful if your plan is written in pace but the treadmill displays speed.
Yes. Any activity measured by time and distance can use the pace formula, including walking, cycling, swimming, or rowing. Just enter your distance and time.
They are accurate for a steady pace over flat terrain. Real races include pacing variations, elevation, and fatigue, so treat projections as a planning baseline rather than a guarantee.
Enter your 5K or 10K distance and total time. The calculator returns your pace per mile and per kilometer, plus the equivalent speed.
The tool will project a marathon time at the same pace, but real endurance varies by runner. Use it as a rough comparison, then adjust based on training volume and long run performance.
Treadmills remove wind resistance and keep speed constant, while outdoor routes include terrain changes. Small differences are normal, especially over short distances.
Use average pace for overall effort and comparisons. Lap or interval pace is better for structured workouts and track sessions where you care about each repeat.
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