We know the future.
No bullshit. Just science.

★ This is your unique Pacelab ID
Don’t lose it! Send it to yourself.
Heat × Elevation = your real finish time
Your ideal marathon time
4:00:00
Mode
We'll estimate your marathon potential from your recent runs. ✓ Strava connected — your time is set from your runs.
: :
Your finish time on a pancake-flat marathon (Berlin, Chicago, Valencia). We'll scale the elevation penalty to your fitness.
:
Your sustainable pace on a flat road. 5:00/km ≈ a 3:31 marathon; 6:00/km ≈ 4:13.
Connect Strava and we'll analyze your recent runs to estimate a realistic marathon time — no guessing. Your runs are processed privately and not stored.

Pick another marathon

OR DROP YOUR OWN GPX FILE — 🔒 premium feature
▸ HOVER THE CHART TO COMPARE ELEVATIONS AT THE SAME KM
▸ MARATHONS ON CHART · DRAG TO REORDER · CLICK TO TOGGLE ·
Search your marathon
Step two
You’ve seen your finish time. Now go earn a better one.
A week-by-week plan tuned to your pace and your race — with a coach that reshapes it around how you feel.
← Compare marathon paces — see how you stack up against other runners
Talk to us
Any questions or suggestions?
Want more marathons in the catalogue, or a personal pace calculation for your next race? Send us a message — we'll get back.
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