Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 7:55 finish (an estimate) · starting 7:00 AM Sep 12. Dark means the sun below civil twilight.
Climbs
16 climbs · 5,238 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 9,972ft | +62% |
| USGS lidar, 1 m | 6,142ft | reference |
They differ because a GPS file picks up noise on every wiggle and often takes its heights from a coarse terrain model, while lidar maps the ground itself to about a metre. We sampled this route every 98 ft against USGS 3DEP and counted each rise of 10 ft or more, on Oct 25, 2026. The planner still uses the course file.
Conditions typical race-day weather for Sep 12 at the start
Typical = the median of 2016–2025 for Sep 12 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac 1 year of this race
Past editions
On race day it reached 86°F at the start, with a low of 70°.
| Year | Start °F | Rain | Wind | Heat index |
|---|---|---|---|---|
| 2026 Sep 12 | 86°/70° | 0.22in | 10mph | 88° |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line.
Reviews what runners who have been there say
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About this course
Grand Canyon of the South 50K — 2026 covers 31.4 mi (50.6 km) with 9,972 ft of elevation gain. That is about 317 ft per mile of climbing, and 9,971 ft of descent. The course tops out at 1,976 ft and bottoms out at 815 ft. Surface data for this course is incomplete; the mapped sections are mostly paved. The profile has 16 sustained climbs; the biggest is the climb from mi 7.1, +891 ft over 1.8 mi at 9.2% on average (steepest stretch 43%). Race day is September 12, 2026, starting at 7:00 AM; the sun rises at 7:10 AM and sets at 7:43 PM. Typical race-day weather at the start: a high of 80°F and a low of 60°F, with a 29% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
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Course history
- Sep 10, 2026Added to the catalog
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