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Routes
Road cycling routes
United States
California
Contra Costa County
Blackhawk

Mount Diablo Summit – Iron Horse Trail bridge loop from Camino Tassajara & Tassajara Village

Routes
Road cycling routes
United States
California
Contra Costa County
Blackhawk

Mount Diablo Summit – Iron Horse Trail bridge loop from Camino Tassajara & Tassajara Village

Hard

4.8

(6401)

8,303

riders

Mount Diablo Summit – Iron Horse Trail bridge loop from Camino Tassajara & Tassajara Village

03:54

70.6km

1,230m

Road cycling

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: August 10, 2026

Tips

Includes a segment in which cycling is not permitted

After 24.0 km for 134 m

Waypoints

A

Start point

Bus stop

Get Directions

1

7.55 km

Black Hills Reservoir

Highlight • Lake

Ascending through a challenging uphill climb, this trail takes you through a lush scenic open space, passing by the Black Hills Reservoir. It serves as a great stopping point for enjoying the scenic water views along your ride.

Tip by

2

17.5 km

Livermore Valley Overlook

Highlight • Viewpoint

Pause a moment to enjoy the magnificent views over the Livermore Valley. There are picnic benches down the stairs should you want to rest up for a little longer on your way to the summit.

Tip by

3

24.0 km

Mount Diablo Summit

Highlight • Summit

Located in Mount Diablo State Park, with an elevation of 3,849 feet Mount Diablo is the highest peak in San Francisco's East Bay area. On a clear day you can …

Tip by

4

49.0 km

Iron Horse Trail junction

Highlight • Cycleway

Crossing of two of the best East Bay flat bike trails, one following a former rail line, the other an old canal that still transports municipal water.

Tip by

5

50.9 km

Iron Horse Trail bridge

Highlight • Bridge

The old railway bridge crosses Walnut Creek and continues its service to the bikers and pedestrians along the Iron Horse Regional Trail.

Tip by

6

52.4 km

Iron Horse Trail

Highlight (Segment) • Cycleway

The Iron Horse Trail is a 32-mile multi-path that connects the towns of Concord and Pleasanton. It follows the route of the abandoned Southern Pacific Railroad. With its access to …

Tip by

7

61.9 km

Danville

Highlight • Settlement

Small and cute town with stores to refuel on a run along the Iron Horse trail.

Tip by

8

62.4 km

Iron Horse Trail

Highlight (Segment) • Trail

Wide well paved flat biking trail following a former rail line along the San Ramon Valley from Pleasanton via Dublin and Walnut Creek to Concord.

Tip by

B

70.6 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

37.4 km

31.7 km

1.18 km

287 m

< 100 m

< 100 m

Surfaces

54.3 km

16.0 km

331 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,140 m)

Lowest point (30 m)

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Weather

Powered by Foreca

Today

Monday 17 August

29°C

14°C

0 %

Additional weather tips

Max wind speed: 13.0 km/h

to get more detailed weather forecasts along your route

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