Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 4:35 finish (an estimate) · starting 7:00 AM Oct 3. Dark means the sun below civil twilight.
Climbs
4 climbs · 2,963 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 4,925ft | +27% |
| USGS lidar, 1 m | 3,890ft | 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.
Aid stations as published on the course file
| Aid station | Mile | km |
|---|---|---|
| A Perpetua AS | 6.7 | 10.7 |
| Start/Finish - Adobe Resort | 19.8 | 31.9 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
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Conditions typical race-day weather for Oct 3 at the start
Typical = the median of 2016–2025 for Oct 3 ±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 66°F at the start, with a low of 54°.
| Year | Start °F | High point °F | Rain | Wind |
|---|---|---|---|---|
| 2026 Oct 3 | 66°/54° | 62°/51° | dry | 8mph |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (1,152 ft).
Reviews what runners who have been there say
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About this course
Perpetua Coast 20 Miler — 2026 covers 19.8 mi (31.9 km) with 4,925 ft of elevation gain. That is about 249 ft per mile of climbing, and 4,934 ft of descent. The course tops out at 1,155 ft and bottoms out at 7 ft. The surface is 78% trail and 22% paved. There is 1 aid station on course; the longest stretch between aid is 13.1 mi. The profile has 4 sustained climbs; the biggest is the climb from mi 6.7, +1,075 ft over 2.4 mi at 8.4% on average (steepest stretch 22%). Race day is October 3, 2026, starting at 7:00 AM; the sun rises at 7:17 AM and sets at 6:55 PM. Typical race-day weather at the start: a high of 63°F and a low of 53°F, with a 34% 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
Races like this one close in distance, climbing, terrain, altitude, weather and season
- Great Eastern Endurance Run GEER 20 Miler — 2026Nov · 20 mi · 241 ft/mi · VASame distance · Mostly trail · Similar climbing
- Macedonia Trail Race 25K — 2026Sep · 16 mi · 248 ft/miSimilar climbing · Mostly trail
- Green Monster Trail Challenge 25K — 2026Oct · 17 mi · 218 ft/mi · PASimilar weather · Same month
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