Running Pace Calculator
Convert between running pace (min/mi, min/km) and speed (mph, km/h). Calculate finish times for any distance from your pace or speed.
5K/10K Training Pace Calculator
Calculate training paces for 5K and 10K races using VDOT-based methodology. Get easy, tempo, interval, and repetition pace zones from a recent race time.
min
sec
Race Time⧉
25:00
Race Pace⧉
8:03 /mile
Est. VDOT⧉
29.6
Fitness index
Your Training Paces
Easy
Base building, recovery, long runs
10:52 – 11:40
/mile | Effort: Conversational
Marathon
Marathon-specific endurance
9:15 – 9:49
/mile | Effort: Comfortable-steady
Tempo / Threshold
Lactate threshold improvement
8:41 – 9:06
/mile | Effort: Comfortably hard
Interval (VO₂max)
VO₂max development
7:48 – 8:17
/mile | Effort: Hard, controlled
Repetition
Speed & neuromuscular
7:05 – 7:39
/mile | Effort: Very fast, crisp
Pace Zone Spectrum
Easy
Marathon
Tempo
Interval
Repetition
← Slower (recovery)Faster (speed) →
Recommended Weekly Distribution
| Zone | Pace Range | % of Weekly Volume | Workout Types |
|---|---|---|---|
| Easy | 10:52 – 11:40 | 60-70% | Easy runs, long runs, warm-up/cool-down |
| Marathon | 9:15 – 9:49 | 5-10% | Marathon-pace long runs, progression runs |
| Tempo / Threshold | 8:41 – 9:06 | 10-15% | Tempo runs (20-40 min), cruise intervals |
| Interval (VO₂max) | 7:48 – 8:17 | 5-8% | 800m-1600m repeats, 3-5 min efforts |
| Repetition | 7:05 – 7:39 | 2-5% | 200m-400m repeats, strides |
Sample Workouts at Your Paces
Easy Long Run
10 miles at 10:52-11:40 /mile
Tempo Run
2mi easy + 3mi at 8:41 /mile + 1mi easy
VO₂max Intervals
6×1000m at 7:48 /mile, 400m jog recovery
Speed Repeats
10×200m at 7:05 /mile, 200m walk rest
Planning notes, formulas, and examples
About the 5K/10K Training Pace Calculator
This calculator turns a recent 5K or 10K result into common training pace ranges such as Easy, Marathon, Tempo, Interval, and Repetition.
The approach is inspired by Daniels-style race-based training systems, where recent performance is used to set practical workout targets for different sessions.
Use the outputs as starting paces for training and adjust for terrain, weather, and recovery status.
When This Page Helps
It can help separate easy running from faster workouts so sessions are closer to their intended purpose. The pace ranges are guides, not exact prescriptions, but they are useful for avoiding the common habit of running everything at the same effort.
How to Use the Inputs
- Select the distance of a recent race you've completed (5K or 10K).
- Enter your finish time for that race.
- View your five training pace zones: Easy, Marathon, Tempo, Interval, Repetition.
- Use Easy pace for recovery and long runs (should feel comfortable and conversational).
- Use Tempo pace for threshold runs (comfortably hard, sustainable for 20–40 min).
- Use Interval pace for VO₂max workouts (hard but controlled, 3–5 min efforts).
- Use Repetition pace for speed work (fast, 200–400m repeats).
Formula used
VDOT Estimation:
VDOT is an index of running fitness derived from race performance.
Pace zones are percentages of race pace:
• Easy: 59–74% VO₂max (~65–79% race pace intensity)
• Marathon: 75–84% VO₂max
• Tempo: 83–88% VO₂max (lactate threshold)
• Interval: 95–100% VO₂max
• Repetition: > 100% VO₂max (anaerobic)Example Calculation
Result: Easy: 10:50–11:33/mi | Tempo: 9:06/mi | Interval: 8:20/mi | Rep: 7:53/mi
A 25-minute 5K (8:03/mi) translates to a VDOT of approximately 36. Easy runs should be 10:50–11:33/mi, feeling relaxed enough to hold a conversation. Tempo runs at 9:06/mi target the lactate threshold. Interval pace (8:20/mi) develops VO₂max in 3–5 minute repeats. Repetition pace (7:53/mi) for short, fast repeats builds speed.
Tips & Best Practices
- Run most of your weekly mileage at Easy pace — this is the foundation of distance running.
- Tempo pace should feel “comfortably hard” — not all-out, but you cannot hold a conversation.
- Interval pace is sustained for 3–5 minutes per repeat with equal rest — it should feel hard.
- Repetition pace is only for short bursts (200–400m) — fast and crisp with full recovery.
- If you cannot hold the target pace for the prescribed distance, the pace is too fast for you.
- Update your training paces every 4–6 weeks as fitness improves.
- On hot days, slow all paces down because heat significantly affects performance.
The Science Behind Training Zones
Each training zone targets a specific physiological system. Easy pace develops the aerobic base; threshold pace raises lactate clearance; interval pace improves VO₂max; repetition pace supports speed and running economy.
The 80/20 Rule
Many runners do best when most mileage stays truly easy and only a smaller share is hard. The calculator helps separate those paces so every session has a clearer purpose.
Adjusting for Conditions
Training paces assume flat terrain and moderate weather. Heat, hills, and fatigue can all shift the right pace for the day.
Sources & Methodology
Last updated:
Methodology
The calculator converts a recent race result into a VDOT-style performance estimate and then maps that estimate to common training paces. It is a planning worksheet for run training, not a guarantee that any one workout pace will fit every day or every course.
Sources
- An Evaluation of Time-Trial-Based Predictions of VO2max and Recommended Training Paces for Collegiate and Recreational Runners (PubMed) — Validation context for race-based VO2max estimates and training paces.
- Daniels’ Running Formula (Human Kinetics / Jack Daniels) — Primary reference for VDOT-style race predictions and pace tables.
Frequently Asked Questions
VDOT is a measure of running fitness developed by coach Jack Daniels. It represents the VO₂max you would need to achieve your race time, adjusted for running economy. A higher VDOT means greater fitness.
Easy pace develops the aerobic system with minimal stress. Running faster does not improve those adaptations very much but adds fatigue that can hurt workout quality.
Tempo pace targets the lactate threshold, while interval pace targets VO₂max. Tempo is usually more sustainable; interval work is shorter and harder.
A typical week includes several easy runs plus one tempo or threshold session and one interval or speed session, with total hard sessions kept moderate.
The training paces are still useful as a starting point. The calculator is most helpful when you want a current fitness anchor rather than a race-specific prediction.
Both approaches work. Pace is more precise and repeatable, while heart rate can better reflect fatigue, heat, and elevation.
More in this topic
Race Time Predictor Calculator
Predict your finish times for 5K, 10K, half marathon, marathon, and custom distances using the Riegel and Cameron formulas from a known race result.
Marathon Pace Calculator
Calculate your ideal marathon pace per mile and per kilometer from a target finish time, with mile-by-mile split tables and negative-split strategies.