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Running · South AfricaSanlam Cape Town Marathon training plan
The Sanlam Cape Town Marathon is 42.2 km, held in Cape Town. Most athletes need about 21 weeks of structured training for it. The block below is a real 21-week plan generated for a club athlete on 45 km a week with a 1:55 half marathon behind them, building to 85 km in the peak week with volume rising no more than 10% a week and every fourth week coming down.
Build my own Cape Town Marathon plan — freeFree to build. The first week is yours to train on before you decide.
The race
| Distance | 42.2 km |
|---|---|
| Where | Cape Town |
| Altitude | 20 m |
| Next edition | Sunday, 17 October 2027 (expected — not yet confirmed with the organiser) |
We have not had this confirmed by the organiser, so it is shown as expected rather than fact. Dates were last checked on 2026-09-11. Check the official entry page before you book anything.
Flat, fast and at sea level. The best place in the country for a personal best.
A 21-week block
Generated by the same engine that builds your plan, for a club athlete on 45 km a week with a 1:55 half marathon behind them. Nothing here is illustrative — it is the actual output, and the rules that shaped it are published.
| Week | Phase | Volume | Load | |
|---|---|---|---|---|
| 1 | Base | 45 km | 258 | |
| 2 | Base | 48 km | 276 | |
| 3 | Base | 51 km | 293 | |
| 4 | Base · down | 35 km | 203 | |
| 5 | Base | 54 km | 307 | |
| 6 | Base | 57 km | 325 | |
| 7 | Base | 60 km | 338 | |
| 8 | Base · down | 41 km | 239 | |
| 9 | Build | 57 km | 353 | |
| 10 | Build | 63 km | 384 | |
| 11 | Build | 69 km | 417 | |
| 12 | Build · down | 47 km | 279 | |
| 13 | Build | 73 km | 436 | |
| 14 | Build | 76 km | 454 | |
| 15 | Build | 79 km | 469 | |
| 16 | Build · down | 54 km | 311 | |
| 17 | Peak | 82 km | 478 | |
| 18 | Peak | 85 km | 495 | |
| 19 | Taper | 66 km | 375 | |
| 20 | Taper | 51 km | 292 | |
| 21 | Race · race | 52 km | 436 |
Load is Training Stress Score: hours × intensity factor² × 100. It is the unit that lets running, riding and swimming be added into one number, which is the only honest way to manage an athlete doing more than one sport.
The paces behind it
For a club athlete on 45 km a week with a 1:55 half marathon behind them, the bands come out as:
| Pace band | Per kilometre |
|---|---|
| Easy — the ceiling, not the target | 6:19 |
| Marathon pace | 5:41 |
| Threshold | 5:22 |
| Interval (VO₂max) | 4:51 |
Computed from VDOT 38.3, derived from that time trial using Jack Daniels' model. Your own numbers will differ — the plan builds these from a time trial you enter.
What this plan says out loud
Some sessions have been cut to fit the time you said you have — 75 minutes on a weekday and 210 at the weekend. That is a real constraint and the plan respects it, but be aware the long session is the one that matters most: if you can find more time anywhere, find it on the weekend.
On 6 days a week there is nowhere to put 34 km without prescribing runs nobody should be doing. The plan caps individual easy runs at 14 km and carries less volume than your target as a result. More days would do more for you than longer runs.
Race day looks like about 3:57:48 on today's fitness — Run 3h 58. Assumes a flat course, reasonable conditions and a sensible first half.
Common questions
How long do I need to train for the Cape Town Marathon?
About 21 weeks from a reasonable base. Less than that is possible but the plan stops being about building fitness and starts being about arriving intact — six weeks before a long race, no meaningful aerobic fitness can be added, and any plan that claims otherwise is selling you something.
How much should the weekly volume go up?
No more than 10% a week, and every fourth week comes down to about two thirds. That ceiling is the single most useful injury-prevention rule in endurance training, and it is enforced here rather than suggested.
Do I need a time trial first?
Yes, to get paces. Without a recent race or time trial the plan will not invent them — it prescribes by effort instead and says so. Guessed paces are how people train the wrong intensity for months.
What should I know about the Cape Town Marathon specifically?
Flat, fast and at sea level. The best place in the country for a personal best.
What does it cost?
Building a plan is free and the first week is unlocked to train on. The whole block is paid for once, from R150, priced by how long it runs. There is no subscription.
Four minutes of questions, then the whole block.