The Rock The Loch Half Marathon

The Rock the Loch Half Marathon

The event at Lake Chabot in Castro Valley offers live and virtual participation across three distances: a 5K, a 10K, and a half marathon. The 5K is entirely paved. The 10K is roughly half paved and half trail and includes one notable climb. The half marathon includes about 3 miles of paved surface, the remainder on trail, and nearly 1,700 feet of total ascent and descent.

Aid stations are placed on course. The 10K includes one aid station at about 3 miles. The half marathon includes aid stations at approximately 4.1 miles, 7.65 miles, and 9.85 miles. Aid stations supply water, Skratch Labs electrolyte drink, GU Energy products, Saltstick products, chips, and pretzels.

Participants receive event items and post-race provisions. Provided items include a race woodallion, a lifestyle tee, a beer sampler stein, and post-race snacks and beverages such as Bellwether Farms yogurt and Jambars. The event includes access to a post-race brewfest and music from DJ Cryptid.

Pre-race bib and shirt pickup is scheduled the day before at Renew PT in Oakland; race morning pickup is available at the start/finish area for those unable to collect items earlier. The organizer does not support refunds, transfers, or credits. If the event is canceled for reasons beyond the organizer's control, swag will be shipped to participants and guidance will be provided for navigating courses and submitting results. Visit the organization's website for the most recent information.