Cull Canyon also is on the Chabot-to-Garin Regional Trail, which is being developed between the two parks. The trail runs along the east side of Cull Canyon Reservoir, then heads north for six miles through East Bay Municipal Utility District property to EBMUD's Chabot Staging Area on Redwood Road (an EBMUD hiking permit is required for this section, phone 287-0459). From here the Willow View Trail leads into Anthony Chabot Regional Park.
From I-580 eastbound in Castro Valley, take the Grove Way exit. Turn to the north (left) on Grove Way. Turn left onto Cull Canyon Road and continue to the park entrance on the left hand side.
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