Redtail Ridge
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Redtail Ridge at Lake Chabot
Redtail Ridge is a trail running event at Lake Chabot Regional Park in Castro Valley, CA, offering multiple distances on a mix of dirt trails, fire roads, some paved sections, and lakeside paths. The course connects to trails in Anthony Chabot Regional Park and features varied terrain with long hills and technical sections. Hiking poles are permitted.
Distances include:
- 5K
- 10K
- Half Marathon
- 30K
- 50K
Elevation gains by distance are listed on course maps and range from about 110 feet for the 5K to roughly 4,500 feet for the 50K. Courses are marked with colored ribbons, laminated signs, and flour arrows at critical turns; blue ribbons mark wrong way trails.
The event is chip timed with disposable chips attached to bibs. Aid stations provide a variety of food and drinks such as energy gels, chews, trail mix, pretzels, sandwiches, soda, water, and electrolyte drink mix. Runners are advised to carry at least one 20 oz bottle as distances between aid stations vary. This is a cupless event; runners must carry their own water bottle or reusable cup. Drop bag service is not available.
Parking at Lake Chabot is included for participants who arrive before lots fill; additional free parking is available along the road outside the park. The event has a total capacity of 500 runners. Dogs are allowed on leash; dogs running the course must start at the back of the pack. Visit the organization's website for the most recent information.
