Half Marathon Pace Calculator
Calculate target pace and 5K interval splits for 21.0975 km half marathons
Input Parameters
Real-time calculation updates dynamically as you adjust inputs. Values remain strictly local on your device.
Half Marathon Pace11.01 km/h
05:27min/km
08:46 min/mile for 1:55:00
| Split Checkpoint | Split Pace | Cumulative Time |
|---|---|---|
| km 5 | 27:15 | 27:15 |
| km 10 | 27:15 | 54:31 |
| km 15 | 27:15 | 1:21:46 |
| km 20 | 27:15 | 1:49:01 |
Clinical Responsibility Note: This calculation provides statistical estimations for informational and educational purposes only. It is not an individualized medical diagnosis or clinical prescription.
Mathematical Formula & Scientific Methodology
Formula: Half Marathon Official Standard Pacing
Pace = Total Time (sec) / 21.0975 kmApplies World Athletics certified distance specifications.
Model Assumptions
- Continuous running cadence
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| 21.0975 km | Exact certified half-marathon distance (13.10938 miles) | dimensionless |
Scientific Limitations
- Fueling and hydration stops should be factored into pacing
Frequently Asked Questions
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