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Redtail Ridge

Castro Valley, United States • 21 Feb 2026

Redtail Ridge is a trail running event held at Lake Chabot Regional Park in Castro Valley, California. The race offers multiple distances including 5K, 10K, half marathon, 30K, and 50K, catering to a wide range of runners from beginners to those seeking personal records. The course features eucalyptus forests, grassy meadows, lakeside paths, and hilltop vistas, with mostly dirt trails and some paved sections, making it relatively fast with moderate elevation gains. Aid stations provide a variety of nutrition and hydration options, and the event promotes environmental responsibility by being cupless. The race has a friendly atmosphere, professional timing, and awards for top finishers and age groups. Visit the organization's website for the most recent information.

United States California Castro Valley

Race information

Website Registration
50 km
50k
30 km
30k
21 km
1/2 Marathon
10 km
10k
5 km
Visit the organization's website for the most recent information.
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