Hike from above Ross Dam to below Diablo Dam, 7 miles one way along the north side of Diablo Lake between Ross Dam and the community of Diablo.  One can hike mostly downhill from Ross to Diablo, 900 ft. elevation gain; 2200 ft. elevation loss or one can hike mostly uphill from Diablo to Ross, 2200 ft. elevation gain; 900 ft. elevation loss.  Drivers will exchange keys. Meet at 7:30 a.m. on the east side of the Sedro-Woolley Food Pavilion parking lot.  Return to Diablo trailhead by 2:30 pm.