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Road cycling routes
United States
California
San Joaquin County
Tracy

Coral Hollow & Patterson Pass loop

Moderate

4.6

(9649)

9,650

riders

Coral Hollow & Patterson Pass loop

03:03

67.1km

750m

Road cycling

Cycle the moderate 41.7-mile Coral Hollow & Patterson Pass loop near Tracy, featuring challenging climbs and scenic Central Valley views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Carnegie State Vehicular Recreation Area

Waypoints

A

Start point

Bus stop

Get Directions

1

25.7 km

Patterson Pass

Highlight • Mountain Pass

Patterson Pass is in the middle of Patterson Pass Road, which is about 13 miles long. The road starts at Mines Road in Livermore and goes eastward over the approximately 1,600-foot Patterson Pass into San Joaquin County, where it terminates at Interstate 580. Be sure to hit the pass at the right time of the day, as heavy rush hour can be more difficult to manage.

Tip by

2

40.0 km

Corral Hollow Pass

Highlight • Mountain Pass

Corral Hollow Pass is at 1600 feet and once led to the mining town of Tesla. It was called "Pass of Good Winds" in Spanish, or "Portezuela de Buenos Ayres." Today, drivers often take this alternate route instead of I-580 during rush hour.

Tip by

B

67.1 km

End point

Bus stop

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Way Types & Surfaces

Way Types

52.9 km

8.45 km

5.68 km

122 m

< 100 m

Surfaces

67.0 km

149 m

< 100 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 (490 m)

Lowest point (10 m)

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Weather

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Monday 6 July

32°C

13°C

-- %

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Frequently Asked Questions

What is the difficulty level of the Coral Hollow & Patterson Pass loop?

This route is generally considered a moderate to challenging road cycling loop. While the overall distance is around 67 km (41.7 miles) with 750m (2,460 ft) of elevation gain, the climbs on Patterson Pass can be particularly steep, with sections reaching 9% and even exceeding 13-14% near the summit. Good fitness is recommended.

What kind of terrain can I expect on this cycling route?

The route primarily consists of paved surfaces, typical for a racebike tour. You'll experience varied terrain, from challenging climbs on Patterson Pass and Corral Hollow Pass to flatter stretches. Some longer variations might include very small unpaved sections, but the core loop is paved. Be aware that descending Patterson Pass can be thrilling but may involve strong crosswinds.

What are the main highlights or viewpoints along the loop?

The primary highlights are the challenging climbs and scenic views from Patterson Pass and Corral Hollow Pass. From the top of Patterson Pass, you'll get expansive views of the Central Valley. The ride also features the distinctive windmills dotting the hills and traverses open, treeless backcountry. Sections along the California Aqueduct Bikeway offer a different perspective.

Where can I park to start the Coral Hollow & Patterson Pass loop?

While the route can be started from various points in Tracy, many cyclists begin from areas with available street parking or public lots within Tracy, California. Specific parking details can vary, so it's advisable to check local parking regulations near your chosen starting point.

What is the best time of year to cycle this route?

The best time to cycle the Coral Hollow & Patterson Pass loop is typically during the spring and fall months when temperatures are milder. Summers can be very hot in the Central Valley, and winters can bring rain and colder conditions. Spring offers green hills and pleasant temperatures, while fall provides cooler weather before the winter rains.

Are there any sections of the route with heavy traffic or limited shoulder space?

Yes, some parts of the route, particularly on Corral Hollow Road near the Carnegie State Vehicular Recreation Area, may have fast-moving traffic and limited shoulder space. Cyclists should exercise caution in these areas and be prepared for less comfortable riding conditions.

Do I need any permits or pay entrance fees for this cycling route?

No, there are no specific permits or entrance fees required to cycle the Coral Hollow & Patterson Pass loop. It primarily uses public roads and passes.

Is the Coral Hollow & Patterson Pass loop suitable for families or beginners?

Given its moderate to hard difficulty and significant elevation gain, especially the steep climbs on Patterson Pass, this loop is generally not recommended for beginners or young families. It's better suited for experienced road cyclists with good fitness levels.

Does the route intersect other well-known paths?

Yes, the route briefly touches upon sections of the California Aqueduct Bikeway. Other minor trails like Coleman Road, McLaughlin Road, and Juniper Trail are also in the vicinity, though the main loop primarily follows public roads.

Are there any cafes or places to refuel near the route?

The loop starts and ends near Tracy, California, where you can find various cafes, restaurants, and convenience stores for refueling before or after your ride. Along the more rural sections of the loop, options are limited, so it's essential to carry sufficient water and snacks.

Is the Coral Hollow & Patterson Pass loop dog-friendly?

As this is primarily a road cycling route on public roads, it is generally not suitable for dogs. The fast traffic, lack of dedicated pedestrian/dog paths, and long distances make it unsafe and impractical for cycling with dogs.

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Coral Hollow & Patterson Pass loop

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