Pace Time
Use Pace Time to convert a 5K goal time into per-mile or per-kilometer pace, check whether your training supports that target, and compare race-day scenarios for the most popular distance in road running.
The 5K is short enough that small pacing errors have an outsized effect on your finish time. Going out 15 seconds per mile too fast in the first kilometer can cost you a minute or more by the finish. A pace calculator helps you set a realistic target and stick to it from the gun.
Whether you are running your first 5K or chasing a PR, the starting question is the same: what pace do I actually need? Pace Time answers that with one quick division.
A sub-25 5K is a common goal for improving recreational runners. Here is the math in Pace Time:
Step 1 - Find your required pace. Enter 25:00 ÷ 3.1. The result is approximately 8:04 per mile. In kilometers: 25:00 ÷ 5 = 5:00 per km.
Step 2 - Set a mile-1 target. Most runners benefit from a controlled start. Add a few seconds: aim for 8:10 in the first mile, then settle into 8:00 for miles 2 and 3.
Step 3 - Check the final 0.1. After 3 miles at ~8:04 pace you have covered about 24:12. You need the last 0.1 mile in under 48 seconds - easily achievable with a finish-line kick.
Find your target below, then use Pace Time to fine-tune the numbers for your race plan.
18:00 finish - 5:48 per mile / 3:36 per km
20:00 finish - 6:27 per mile / 4:00 per km
22:00 finish - 7:06 per mile / 4:24 per km
25:00 finish - 8:04 per mile / 5:00 per km
28:00 finish - 9:02 per mile / 5:36 per km
30:00 finish - 9:41 per mile / 6:00 per km
35:00 finish - 11:17 per mile / 7:00 per km
Your 5K race pace is one of the most useful reference points in training because other workout paces can be estimated from it:
Easy runs - Add 1:30 to 2:30 per mile to your 5K pace. If your 5K pace is 8:00/mi, easy pace is roughly 9:30 to 10:30/mi. Use Pace Time: 8:00 + 1:30 = 9:30.
Tempo runs - Add about 25 to 35 seconds per mile. A tempo effort for an 8:00/mi 5K runner lands near 8:30/mi.
Interval repeats (400m–800m) - Subtract 10 to 20 seconds per mile from 5K pace. For an 8:00/mi 5K runner, target about 7:40 to 7:50/mi on hard intervals.
Pace Time handles the addition and subtraction in time format, so you can quickly build a full workout card without converting anything to decimals.
If you are running your first 5K, pace calculators help set expectations. A common mistake is starting at someone else's pace and burning out before mile 2.
Try this: run a comfortable mile during a training run and note the time. Enter it in Pace Time and multiply by 3.1 - that gives you a realistic finish estimate. If your comfortable mile is 11:00, expect a 5K around 11:00 × 3.1 = ~34:06. That is a perfectly solid first race, and now you have a number to beat next time.
Pace Time is a dedicated running calculator built for exactly this kind of math:
25:00, not 25 minutesAnswers to the questions runners ask most when preparing for a 5K.
Divide your goal finish time by 3.1 miles (or 5 km). For a 25:00 goal, enter 25:00 ÷ 3.1 in Pace Time to get roughly 8:04 per mile. For kilometers, divide by 5 to get 5:00 per km.
Many first-time 5K runners finish between 28:00 and 35:00. Completing the distance without stopping is a meaningful achievement on its own. Once you have a baseline, you can use a pace calculator to set your next target.
A sub-20 5K requires averaging faster than 6:26 per mile or 4:00 per km. That is a competitive pace and typically requires structured speed work, tempo runs, and consistent mileage over several months.
A common method is to run a hard 1-mile time trial and multiply by roughly 3.5 to estimate your 5K. For example, a 6:30 mile suggests a 5K around 22:45. Use Pace Time to do the multiplication and then divide by 3.1 to see the pace.
Your 5K pace is typically your fastest sustainable race pace. As a rough guide, your 10K pace will be about 15 to 20 seconds per mile slower, and your half marathon pace about 30 to 45 seconds slower. Use Pace Time to calculate the exact numbers for your fitness level.
Plan target pace, projected finish time, and race-day adjustments for the marathon distance.
Break race goals into lap, mile, or kilometer splits for workouts and pacing plans.
See common pace-to-finish-time relationships and use them as a quick planning reference.
Use the app for goal-time math, training pace checks, and race-day split planning on iPhone, iPad, Apple Watch, or Android.