Tempo Run Pace Calculator
Calculate tempo, threshold, cruise interval, and easy run paces from a recent race result, so each session in your week has a defined target rather than a guess.
🏃 Exercise Science📐 Tempo pace ≈ threshold pace; other paces derived as percentages of it🏥 Health
Recent race distance
Race time — minutes
Race time — seconds
Threshold pace override (min/km, optional)
Please enter valid values.
Formula & Reference
| Variable | Symbol | Formula | Units |
|---|---|---|---|
| Tempo Run Pace Calculator | — | Tempo pace ≈ threshold pace; other paces derived as percentages of it | min per km |
Step-by-Step Examples
Example 1
From a 5K
5K in 22:30.
- Race pace = 1350 / 5 = 270 s/km = 4:30/km
- 5K pace is faster than threshold, so tempo ≈ 4:30 × 1.06
- Tempo pace = 286 s/km = 4:46/km
- Easy pace = 4:46 × 1.25 = 5:58/km
✓ Tempo 4:46/km, easy 5:58/km
Example 2
From a 10K
10K in 48:00.
- Race pace = 2880 / 10 = 288 s/km = 4:48/km
- 10K pace sits close to threshold, so tempo ≈ 4:48 × 1.03
- Tempo pace = 297 s/km = 4:57/km
✓ Tempo 4:57/km
Example 3
From a Half Marathon
Half marathon in 1:38:00.
- Race pace = 5880 / 21.0975 = 278.7 s/km = 4:39/km
- Half pace is slightly slower than threshold, so tempo ≈ 4:39 × 0.99
- Tempo pace = 276 s/km = 4:36/km
✓ Tempo 4:36/km
Real-World Applications
Session Prescription
Tempo runs are among the highest-return sessions in distance training, but only when run at the right intensity.
Avoiding the Grey Zone
Many runners drift into a moderate pace that is too hard to be easy and too easy to be threshold, accumulating fatigue without the adaptation.
Cruise Intervals
Broken threshold work at slightly faster than tempo pace with short recoveries allows more time at threshold intensity.
Progression Tracking
Recalculating paces after each race shows how training paces should shift as fitness improves.
Common Mistakes to Avoid
⚠️
Running tempo runs too fast
The most common error. Tempo pace should feel comfortably hard and sustainable for roughly an hour — not like a race effort.
⚠️
Running easy days too fast
Easy pace should be genuinely easy, around 25% slower than tempo. Compressing the range between easy and hard undermines both.
⚠️
Using paces from an outdated race
Training paces derived from a race result months old will no longer match current fitness in either direction.
Frequently Asked Questions
What is a tempo run? ▾
A sustained effort at or near lactate threshold pace — comfortably hard, roughly the pace you could hold for about an hour in a race.
How long should a tempo run be? ▾
Continuous tempo efforts typically run 20 to 40 minutes at threshold, not counting warm-up and cool-down.
What is the difference between tempo and threshold pace? ▾
In most training systems they refer to the same intensity. Some coaches distinguish a slightly easier tempo from a true threshold pace, but the difference is small.
What are cruise intervals? ▾
Threshold work broken into repeats of roughly 5 to 15 minutes with short recoveries, allowing more total time at threshold than a single continuous effort.
How should tempo runs feel? ▾
Controlled discomfort. You should be able to speak a short sentence but not hold a conversation, and finish feeling you could have continued a while longer.