Earl Warren Park – Portuguese Centennial Park loop from Castro Valley
Earl Warren Park – Portuguese Centennial Park loop from Castro Valley
2.5
(13)
56
riders
Earl Warren Park – Portuguese Centennial Park loop from Castro Valley
01:32
29.4km
520m
Road cycling
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.
Last updated: April 20, 2026
Waypoints
Start point
Bus stop
Get Directions
4.81 km
Earl Warren Park
Highlight • Rest Area
Tip by
19.8 km
Portuguese Centennial Park
Highlight • Monument
Tip by
29.4 km
End point
Bus stop
Way Types & Surfaces
Way Types
14.6 km
13.9 km
684 m
106 m
< 100 m
Surfaces
28.7 km
682 m
< 100 m
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Elevation
Highest point (360 m)
Lowest point (40 m)
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Weather
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Monday 22 June
21°C
13°C
0 %
Additional weather tips
Max wind speed: 10.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Description
If you're looking for a road cycling route that connects two distinct East Bay parks with a good workout in between, the Earl Warren Park – Portuguese Centennial Park loop from Castro Valley is a solid choice. This moderate 18.2-mile (29.4 km) road cycling route packs in 1721 feet (524 metres) of elevation gain, taking about 1 hour and 32 minutes to complete. It's ideal for cyclists who appreciate varied terrain and a blend of urban and natural scenery, offering a taste of what Castro Valley road cycling trails have to offer.
What to expect on Earl Warren Park – Portuguese Centennial Park loop from Castro Valley
This route takes you on a journey from the more residential feel of Castro Valley to the cultural heart of Downtown Hayward. Starting near Earl Warren Park, a local spot with basic amenities, you'll soon find yourself navigating the East Bay's characteristic rolling hills. Expect significant elevation changes and challenging climbs as you make your way towards Hayward, where the terrain offers a mix of moderate ascents and descents. The scenery shifts from potential redwood groves and reservoir views in the Castro Valley area to glimpses of the San Francisco Bay and marshlands as you approach Portuguese Centennial Park. This park itself is a unique landmark, featuring distinctive tiles and light standards donated by Faro, Portugal, Hayward's sister city. The route demands good fitness, but rewards you with diverse views and a blend of challenging climbs and local points of interest.
Planning your visit
Parking is available at Earl Warren Park in Castro Valley, making it a convenient starting point for this loop. Given the varied terrain and potential for challenging climbs, ensure you're well-hydrated, especially on warmer days. While there are no specific permits or seasonal closures mentioned for this combined route, the East Bay hills can get warm in summer, so an early start is often advisable. This route offers a good opportunity to explore the Castro Valley road cycling terrain and connect two interesting local parks.
Trail details
- Distance: 18.2 miles (29.4 km)
- Elevation gain: 1721 feet (524 metres)
- Difficulty: moderate
- Estimated time: 1 hours and 32 minutes
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