Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 21:10 finish (an estimate) · starting 7:00 AM Oct 24 · headlamp mi 52–the finish. Dark means the sun below civil twilight.
Climbs
21 climbs · 19,315 ft totalbiggest firstConditions typical race-day weather for Oct 24 at the start
Typical = the median of 2016–2025 for Oct 24 ±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 75°F at the start, with a low of 53°.
| Year | Start °F | High point °F | Rain | Wind |
|---|---|---|---|---|
| 2026 Oct 24 | 75°/53° | 70°/41° | dry | 6mph |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (2,769 ft).
Reviews what runners who have been there say
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About this course
Island View - Endurance Run 100M — 2026 covers 95.6 mi (153.9 km) with 22,715 ft of elevation gain through California, United States. That is about 238 ft per mile of climbing, and 22,706 ft of descent. The course tops out at 2,769 ft and bottoms out at 58 ft. The surface is 51% gravel and 49% trail. The profile has 21 sustained climbs; the biggest is the climb from mi 16.0, +2,114 ft over 3.1 mi at 13.1% on average (steepest stretch 19%). Race day is October 24, 2026, starting at 7:00 AM; the sun rises at 7:14 AM and sets at 6:16 PM. Typical race-day weather at the start: a high of 74°F and a low of 57°F, with a 3% 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 3, 2026Added to the catalog
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Sonoma Fall Classic — 2026Oct · 50 mi · 234 ft/mi · CASimilar climbing · Similar terrain · Same month
- Virgil Crest Ultras 100 Miler — 2026Sep · 101 mi · 226 ft/miSame distance · Similar climbing · Similar weather
- Island View - Endurance Run 100K — 2026Oct · 64 mi · 236 ft/miSimilar weather · Similar climbing · Similar terrain
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