CARDIO · PACING
Marathon Pace + Elevation Calculator
Convert a target marathon time on a hilly course into the flat-equivalent pace you actually need.
Result
Average vs Flat-Equivalent Pace
Race-day pace vs the flat-course pace required to hit the same target time.
How to use it
- Open Marathon Pace + Elevation Calculator and enter your current baseline accurately.
- Adjust one variable at a time so changes are easy to interpret.
- Review the headline output first, then inspect supporting metrics.
- Run at least one conservative and one aggressive scenario.
- Use outputs to set your next training or nutrition action for the week.
- Save or share this setup if you want to revisit it later, then check one easier and one harder version before you change your plan.
Questions people usually ask
What is Marathon Pace + Elevation Calculator best used for?
Marathon Pace + Elevation Calculator helps you convert a target marathon time on a hilly course into the flat-equivalent pace you actually need. so you can turn estimates into practical next steps.
How do I avoid misleading results?
Use realistic baseline inputs, run multiple scenarios, and update assumptions as your training, recovery, or nutrition changes.
Is this medical advice?
No. Outputs are general planning estimates and do not replace professional medical guidance.
Is this free and private?
Yes. Tools run client-side in your browser with no signup.
Formula
See the math
The underlying formula with variables defined, derivation shown, and a worked example with units.
Related Resources
Learn the decision before you act
Every link here is tied directly to Marathon Pace + Elevation Calculator. Use the explanation, formula, examples, and benchmarks to pressure-test the calculator output from first principles.
How To Use
4 STEPSHow to Use Marathon Pace + Elevation Calculator
Step-by-step guide for the Marathon Pace + Elevation Calculator: inputs, interpretation, and reproducibility tips.
ReadFormula
5 VARIABLESMarathon Pace Elevation Formula
Marathon elevation pace correction: +12-15 sec per 1000m elevation gain (uphill), -4-6 sec downhill. Minetti 2002 + Townshend 2009 validated.
ReadFormula
6 VARIABLESMarathon Sweat Rate + Electrolyte Formula
Marathon hydration: sweat rate 0.5-2.5 L/h, sodium concentration 460-1840 mg/L. Casa 2007 + ACSM 2007 standards. Replace 70-90% of losses; avoid hyponatremia.
ReadFormula
4 VARIABLESRace-Week Taper Formula
Race taper: 41-60% volume reduction over 8-14 days while maintaining intensity. Mujika & Padilla 2003 meta-analysis. ~3% performance gain.
ReadFormula
4 VARIABLESRiegel Race Time Formula
Riegel race time prediction: T2 = T1 × (D2/D1)^1.06. Race-time prediction across distances. Valid 5K–marathon, breaks down beyond 30K.
ReadFormula
4 VARIABLESTreadmill to Outdoor Pace Conversion Formula
Treadmill grade adjustment: 0% treadmill = outdoor pace + 12 sec/km (no wind resistance). +1% grade adds ~3.3% energy cost (Jones & Doust 1996). 1-2% grade simulates outdoor effort.
ReadRelated deep dive
All articles →Read further
Long-form context behind the calculator output.
- Pillar·11 min
Marathon Training Tapers
Marathon taper: the volume-reduction curve, intensity preservation, and the taper-week window where most performance benefit is realised.
Read - Pillar·12 min
Marathon Pace and Elevation Adjustments
Marathon pace and elevation: a validated correction for total climb / descent — Strava grade-adjusted pace, Naismith's rule, where they break.
Read - Article·7 min
Marathon Pace on a Net-Downhill Course: A Boston-Style Walkthrough
Marathon pace math for a Boston-style profile: 145m gain, 290m loss, 200-minute target. The 4:44/km flat-equivalent split and where the model breaks.
Read
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