23rd Annual Tilden Tough Ten, 10 miles

The Tilden Tough Ten kicks off the 8th annual “East Bay
Triple Crown Trail Championships,” three of the
toughest trail races in the East Bay. Second in the
series is the Lake Chabot Trail Challenge Half
Marathon and third is the Dick Houston Memorial Woodminster X-C Race. Runners who enter and finish all three races will automatically be entered in the “Triple Crown” and receive a survivor award. Winners are determined by totaling the times in all three races.