What this result means
Results at altitude are hard to compare with sea-level PBs. This page starts from the pace you actually ran (or expect) at race elevation and estimates what that might equate to at sea level under the same model.
The conditions board slows a sea-level goal for elevation. This tool runs the inverse question for interpretation and comparison.
4:30/km average at 2,000 m might translate to a faster sea-level equivalent depending on the model constants — use the form with your numbers.
Compare the output to recent low-altitude races only as a rough sanity check, not a prediction.
Calculation method
Uses the documented altitude slowdown model inverted: sea-level equivalent pace from altitude pace and elevation. See /methodology.
Acclimation, dry air, and course profile are not captured.
One average elevation per race; rolling courses need judgement.
Frequently asked questions
How is this different from altitude-adjusted goal pace?
Goal-pace tools start sea-level and slow for race day. This starts at altitude and estimates sea-level equivalence from a result.
What elevation should I enter?
Average race elevation or the official course altitude when published.
Can I compare to my PB?
Use it as context. Sea-level PBs still depend on training, pacing, and conditions.
Do I need an account?
No.
Does acclimation change the result?
Yes in real life, but not in this model. Weeks at altitude can make the same pace feel easier; the calculator uses elevation only.