In 26 days · Sat, Sep 19, 2026
Don't let race day sneak up
One email during race week. That's it.
Saturday, September 19th, 2026
18012 Bollinger Canyon Rd, San Ramon CA
Half · 5K · 10K
55–77°F · low rain risk
See last 10 years
On this date: rain 1 of the last 10 years
2025
58–79°F
dry
2024
54–72°F
dry
2023
54–72°F
dry
2022
53–72°F
rain
2021
57–71°F
dry
2020
58–79°F
dry
2019
53–72°F
dry
2018
49–80°F
dry
2017
52–73°F
dry
2016
60–92°F
dry
Best months to race in California →
About this race
Race Overview
This is the race your momma warned you about! The half marathon cannot be described as "flat and fast" or "good for beginners" or with any other nice phrase. In fact, the phrases most commonly used to describe it would be unprintable. But...once you finish the course, you will have experienced trails and seen views that few others ever will. And you will have a lifetime of bragging rights!
Event Details
- Date: 2026-09-19
- Location: 18012 Bollinger Canyon Rd, San Ramon, CA
- Race URL: Rocky Ridge Race Info
Race Categories
The Rocky Ridge Half Marathon is the finale for the 2025/2026 Ultra Half Marathon Series (series participation is not necessary to enter race).
- Half Marathon: Intense trails with incredible views.
- 10K and 5K: Less intense but still challenging with hills.
- All Runners: Will be rewarded with rarely-seen vistas.
Join Us!
If you are one of those brave souls ready to face either victory occasion and face this beast, come join us!
Course map
Train with a club
Run clubs near San Ramon to train with before race day.
Suggested Races
Organize this race?
Claim it free to manage your listing — and get it featured for free, while spots last.