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Cape Town Marathon

42.20 km
73 m
13–24 °C
7:00:00

A genuinely hard course

  • Most runners crack near km 32 — fuel before km 30, not at it.
  • Full overhead sun from km 1 — sunscreen and run the shaded side.

18 October 2026

 

1324 °C

We lock the real forecast into your plan in race week.

5.2/ 10
Hard

Driven by typical race-day heat (~19 °C). Harder than Auckland Marathon (5.2), easier than McCourt Foundation LA Marathon (5.2) — tougher than 49% of the races we cover.

Low confidence

Auto-generated from GPS route + elevation data

Course route from a community GPX; race date/start time not set (generic defaults). Climate from Open-Meteo archive.

Elevation profile

Route-derived (GPX + DEM)

Paid strategy guardrail

Official race packet remains source of truth

  • goandrace.com (community course route)
  • Race month per official race calendar
  • Open-Meteo historical climate archive (2022–2024)

Step 1 · Free preview

See the course-adjusted plan first

Enter one recent result. The preview returns course cost, first splits, and fuel target from the deterministic engine and the current course data model.

VDOT

49.1

Estimate

3:18:51

Course cost

+5:07

Fuel target

60 g/h

60 g/h needs a trained gut — practise it in training, never try new fuelling on race day. Your full plan tunes this to your experience.

Where the course costs you19 °C · 67% RH
on pace easing the climbs that cost youToughest: km 7 · 5:03

First 5 km preview

full race locked

  1. km 14:51
  2. km 24:57
  3. km 34:51
  4. km 44:45
  5. km 54:45
km 6-42 locked · full splits, nutrition timeline, danger zones, printable race band
Open approximate research previewShare this prediction ↗

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Uses an approximate course model; verify final logistics against the official race packet.

The preview shows the shape. The plan races it for you.

Course preview

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  • Every km split, weather-adjusted
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  • Danger zones + watch file (GPX)
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Continue with approximate course data →

Course elevation

41 m21 m1 m
climbflatdescent
41 m
1 m
⚠ The Wall
☀ Full sun
0 km10 km20 km30 km40 km

73 m total gain · 74 m loss · max 41 m, min 1 m.

Fly the course

0.0 km8 m+0.1%
Loading map…

Sun & shade

1 km

2 km

39 km

From km 1 the sun sits high overhead — peak UV and radiant heat, so keep sunscreen on and run the shaded side of the road where you can.

Approximate — solar position from the route geometry and a 09:00 start (timezone estimated from longitude), for a mid-pack finishing time.

Race overview

How hard is this course?

Reference table — how the Cape Town Marathon compares to a flat sea-level course for four typical fitness levels. Computed from the route profile, mean course altitude, and typical race-week climate (19 °C / 67 % humidity). Your personal strategy uses your VDOT, per-km splits, nutrition timing, and the typical climate baseline for this static sample; paid strategies use Open-Meteo when a verified race date is inside the forecast window.

RunnerFlat-course finishCape Town Marathon finishCourse costAdjusted pace
Beginner (VDOT 35)4:16:084:22:54+2.6%6:13/km
Intermediate (VDOT 45)3:28:173:33:47+2.6%5:04/km
Trained (VDOT 50)3:10:413:15:43+2.6%4:38/km
Competitive (VDOT 60)2:43:242:47:42+2.6%3:58/km

Reference nutrition

For a 70 kg runner finishing in 3:15:43 at 19 °C. Adjust to your weight and tolerance — these are ISSN-window targets, not prescriptions.

60 g
196 g
665 ml
500 mg

FAQ

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    Related races

    New to the marathon? Start with our marathon pacing strategy guide or run the VDOT calculator.

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