TRAILGOAT
Rim Rock 50 Mile Trail Challenge Mini Rim Rock — 2027Trail race course49.5mi9,469ftMay 15

Rim Rock 50 Mile Trail Challenge Mini Rim Rock — 2027

Race day · May 15, 2027 · by BayTrailrunners

race day in 191 days

Plan this race
Course map, elevation profile & surface
Distance
49.5mi
Elev gain
9,469ft
Elev loss
9,467ft
High point
1,627ft
Low point
23ft
Drawing the course…

Race-day light

In the dark
0%
Sunrise
5:59am
Sunset
8:13pm
Headlamp from
Not needed

For a 10:50 finish (an estimate) · starting 7:00 AM May 15. Dark means the sun below civil twilight.

Climbs

16 climbs · 7,876 ft totalbiggest first
Pick a climb to find it on the profile and the map.
Conditions typical race-day weather for May 15 at the start
Typical high
73°F
Typical low
49°F
Chance of rain
13%
2025 high
76°F

Typical = the median of 2016–2025 for May 15 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.

Race almanac the sky on race day

Next race day Sat, May 15, 2027 · 7:00 AM start

First lightsunrise 5:59 am
5:29am
Last lightsunset 8:13 pm
8:43pm
Moonwaxing gibbous, up until 3:31 am
82% lit

First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.

Reviews what runners who have been there say

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About this course

Rim Rock 50 Mile Trail Challenge Mini Rim Rock — 2027 covers 49.5 mi (79.7 km) with 9,469 ft of elevation gain. That is about 191 ft per mile of climbing, and 9,467 ft of descent. The course tops out at 1,627 ft and bottoms out at 23 ft. The profile has 16 sustained climbs; the biggest is the climb from mi 36.1, +677 ft over 0.8 mi at 16.6% on average (steepest stretch 36%). Race day is May 15, 2027, starting at 7:00 AM; the sun rises at 5:59 AM and sets at 8:13 PM. Typical race-day weather at the start: a high of 73°F and a low of 49°F, with a 13% 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.

Load the course in the TrailGoat Run Planner for grade-adjusted pacing, climb-by-climb splits, hourly weather and a full hydration & fueling plan — free, no account needed.

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Course history

  1. Oct 21, 2026Added to the catalog
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