- This event has passed.
38th Annual Tilden Tough Ten
May 24 @ 8:00 AM - 11:00 AM
10-mile trail race. Limited to 200 runners (131 spaces left). Rain or shine, no refunds. T-shirt finisher swag. Awards: overall top 3 M/F + age groups (10-yr divisions). Benefiting East Bay Regional Parks. Race Director: dave_nicely@mac.com.
