109 mi · 2,700 ft of climbing · high point 1,470 ft · start/finish downtown Napa (First St & Main St)
Ridden Mar 23, 2026 · Delta & Valley
The ride
Close to home and full of curves. South on 29 through American Canyon to Vallejo, over the Carquinez Strait and down San Pablo Avenue into Crockett, where Cummings Skyway climbs up into the hills.
From there the route goes through the back roads of Contra Costa: McHarry Ranch Road and Alhambra Valley Road to Martinez, Reliez Valley Road down to Lafayette, then CA-24 through Orinda. Skyline Boulevard and Grizzly Peak Boulevard run along the ridge above Oakland and Berkeley, the route's 1,470 ft high point with the Bay spread out below, and Tunnel Road takes you down into Berkeley.
Home is I-80 north along the bay through Albany, Richmond and Pinole, San Pablo Avenue through Hercules, Rodeo and Crockett, then back over the Carquinez Bridge to Vallejo and up through American Canyon to Napa. About 109 mi with ~2,700 ft of climbing, an easy half day. Fuel is everywhere on this one. Skyline and Grizzly Peak are narrow and busy on weekends, and the hill roads get closures for slides and roadwork, so check conditions first.
[Steve: add your full write-up here]
Key roads and highlights
CA-29 through American Canyon, Vallejo
Carquinez Bridge, San Pablo Avenue to Crockett
Cummings Skyway
McHarry Ranch Road and Franklin Canyon area
Alhambra Valley Road to Martinez
Reliez Valley Road to Lafayette
CA-24 through Orinda
Skyline Boulevard and Grizzly Peak Boulevard, high point ~1,470 ft
Tunnel Road into Berkeley
I-80 / San Pablo Avenue through Richmond, Pinole, Hercules, Rodeo
Gallery
Ride photos coming soon
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