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Cape Town Marathon · Sunday, 23 May 2027Cape Town Marathon time predictor
The Cape Town Marathon is flat, fast and at sea level — a World Marathon Major from 2027, Africa’s first, and now run in May. It is the best place in the country to chase a marathon time. Type your own numbers and get a predicted finish, corrected for the altitude you train at.
| Distance | 42.2 km |
|---|---|
| Race altitude | 20 m |
| Even-pace halfway | 1:45:08 |
| Your fitness (VDOT) | 40.4 |
Flat-course physiology plus an altitude correction. Hills, heat and pacing are not modelled: allow for the course.
Racing it well
Gauteng runners arrive with an altitude advantage: the same effort is quicker at sea level. The danger is spending it in the first 10 km. Use the converted pace as a ceiling for the first third.
What the prediction includes
Your fitness from the race you type (Daniels’ VDOT), the distance, and the difference in altitude between where you train and the race’s 20 m — about 2% for every 300 m above 500 m. It does not model the hills, heat or your pacing, so allow for the course.
A full 20-week block for the Sunday, 23 May 2027 race starts on Monday Monday, 28 December 2026. The Cape Town Marathon training plan page has the calendar and race-day targets.
Build my Cape Town Marathon plan — free to buildSee your whole block before you pay.
Common questions
How do I predict my Cape Town Marathon time?
Type a recent race and where you train. The calculator works out your fitness, applies it to the race distance and corrects for altitude.
Is the Cape Town Marathon good for a PB?
Yes — flat, at sea level and, from 2027, a World Marathon Major. Wind on the day is the main thing that slows it.
When is the Cape Town Marathon?
Sunday, 23 May 2027. Check the official entry page before booking anything.
When should I start training for the Cape Town Marathon?
A full 20-week block starts on Monday Monday, 28 December 2026. A plan built later counts back from race day.