Pace Zone Calculator
Calculate personalized training pace zones based on your threshold pace or recent race performance.
Enter a recent race result
hh:mm:ss
Training Zones
Set up these zones in Paicer and every workout you upload automatically uses your personal pace targets on your Garmin watch.
Try Paicer FreeHow It Works
Enter your threshold pace or a recent race result. The calculator generates training zones from easy/recovery through interval paces, following established coaching methodologies.
Tips for Better Results
- •80% of your running should be in easy/aerobic zones
- •Quality workouts (tempo, intervals) make up just 20% of training
- •Update your zones every 4-8 weeks as fitness improves
The 5 Training Pace Zones Explained
Jack Daniels' Running Formula defines training around five core paces. Easy (E) pace builds aerobic capacity with minimal fatigue and should feel conversational. Marathon (M) pace is your goal race pace for 26.2 miles. Threshold (T) pace, often called tempo, is the fastest pace you can sustain for about an hour, improving your body's ability to clear lactate. Interval (I) pace targets VO2max and is run in repeats of 3-5 minutes. Repetition (R) pace is the fastest of the five, used for short, fast reps that improve running economy and speed.
Example: Zones From a 4:30/km Threshold Pace
- Easy pace: roughly 5:15-5:45/km, comfortable and conversational
- Marathon pace: roughly 4:50-5:00/km
- Threshold pace: 4:30/km (your reference pace, sustainable for about an hour)
- Interval pace: roughly 4:05-4:15/km, run in 3-5 minute reps
- Repetition pace: roughly 3:50-4:00/km, run in short fast reps under a minute or two
Pace Zone Quick Reference
| Zone | Effort | Typical Use |
|---|---|---|
| Easy / Recovery | Conversational, low effort | Base mileage, warm-ups, cooldowns, recovery days |
| Marathon | Comfortably hard, sustainable for hours | Marathon-specific long run segments |
| Threshold / Tempo | Comfortably hard, sustainable for ~60 min | Tempo runs, cruise intervals |
| Interval | Hard, VO2max effort | 3-5 minute repeats with jog recovery |
| Repetition | Very hard, fast | Short reps under 400-800m for speed and economy |
Frequently Asked Questions
Pace Zones
Pace zones are specific pace ranges for different training intensities. Each zone targets different physiological adaptations, from easy recovery runs to high-intensity intervals.
Threshold pace is approximately the pace you could sustain for 60 minutes all-out, or about 10K race pace for most runners. You can also estimate it from a recent race time.
Training in the right zones ensures you get the intended benefit from each workout. Running too fast on easy days or too slow on hard days reduces training effectiveness.
VDOT is a fitness score from Jack Daniels' Running Formula, derived from a recent race performance. Once you know your VDOT, it maps directly to Easy, Marathon, Threshold, Interval, and Repetition paces without needing separate calculations for each one.
Set up your zones once in Paicer with your personal paces and aliases (e.g. "T pace" or "tempo" both map to your threshold zone). Every workout you upload afterward automatically uses the right pace targets on your Garmin watch, no manual re-entry needed.
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