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Route 680--Contra Costa County

Mount Diablo State Park- On a clear day, you can almost see forever from the summit of Mount Diablo State Park, elevation 3,849 feet. This park is one of the ecological treasures of the San Francisco Bay Area.

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Quick Facts
Designation: California State Scenic Highway
Length, One-Way: 14 Miles (23.33 Kilometers)
Time: 17 minutes @ 50 mph

General Information

The site of Mt. Diablo offers a visual break from the rush of suburban traffic.
Copyright: - California Scenic Highway Program
The site of Mt. Diablo offers a visual break from the rush of suburban traffic.
Description - In Contra Costa County, Route 680 travels from the Alameda County line to State Route 24. This suburban freeway passes attractive residential and commercial areas while providing views of 3,849-foot Mt. Diablo. Two large outdoor recreation destinations lie moments away: Mt. Diablo State Park and Lafayette Reservoir Recreation Area.

Attractions - Within site from the freeway is the stunning Mt. Diablo, which is surrounded by Mount Diablo State Park. On a clear day from the summit of Mt. Diablo visitors can see over 40,000 square miles in at least 35 of California's 58 counties. But a spectacular view is not the only thing Mount Diablo State Park has to offer. There is an extensive trail system, vivid mountain wildflowers, fascinating wildlife and distinctive rock formations.

Lafayette Reservoir Recreation Area offers a refuge for the traveler. Located immediately south of Route 24, there are opportunities for picnicking, walking, hiking, boating, and fishing. The lake contains populations of rainbow trout, catfish, largemouth bass, and bluegill.

Recreation - The Route 680--Contra Costa County is known for it's scenic attractionsincluding the nearby foolthills and parks.

Climate - Climate in the San Francisco Bay area varies greatly with elevation and the amount of coastal influence. Areas with more coastal influence experience moderate temperatures year round with fog likely from June through mid-August. Plan your coastal visit in the late summer or fall to ensure the best conditions for viewing the scenery. Also, occasional clear days between winter and spring storms are incomparable. Areas further inland experience greater temperature extremes, with relatively cooler winters and hot summers. Inland areas often receive frost on winter nights. As throughout most of California most of the precipitation comes in the winter months, with April through October normally very dry.

Location - Route 680 runs through the East Bay Area.

Alameda County: From Mission Boulevard in Fremont to the Contra Costa County line.
Contra Costa County: From Alameda County line north to State Route 24 in Walnut Creek.

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Recreation Opportunities
Activity Remarks On Site
ICON Scenic Driving Route 680--Contra Costa County
ICON Viewing Scenery Route 680--Contra Costa County

More Information

Additional Information:
California Scenic Byways - California offers one All American Road, two National Scenic Byways, and well over 50 state and National Forest designated scenic byways.

Scenic Byways Homepage - National Scenic Byways official web site with detailed info on all national and state byways.


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