Headwaters 50k
Headwaters 50k is listed as a dog-friendly trail race. Check the official source for current course and leash requirements.
Dog-friendly trail race directory / CA
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Headwaters 50k is listed as a dog-friendly trail race. Check the official source for current course and leash requirements.
Official RunSignup page lists a 1 Miler Doggie Run, says leashed dogs are welcome and encouraged, and describes on-course water stations for humans and pups.
Dog-friendly race experience with 5K With Pet divisions; the official page says participants can run or walk 5K with your dog.
Dogs can participate in the Pups & Human 5K; the official page says the main event is a 5K for pups on leash with their human.