Devil's Slide – Ace Trail loop from Milagra Ridge

Routes

Mountain biking trails

Devil's Slide – Ace Trail loop from Milagra Ridge

Hard

4.7

(2068)

5,621

riders

Devil's Slide – Ace Trail loop from Milagra Ridge

03:27

38.2km

980m

Mountain biking

Hard mountain bike ride. Very good fitness required. Advanced riding skills necessary. The starting point of the route is right next to a parking lot.

Last updated: September 25, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 19.4 km for 219 m

Waypoints

Start point

Parking

Get Directions

6.09 km

Portolá Discovery Site Monument

Highlight • Monument

This is the spot from which participants of the Portola Expedition saw the San Francisco Bay for the very first time. It's essentially the spot at which the existence of …

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Lookout

Viewpoint

16.1 km

Pacifica Vista on Old San Pedro Mountain Road

Highlight • Viewpoint

From this spot on Old San Pedro Mountain Road, you get truly stunning, panoramic views of the Pacific Ocean and surrounding foothills and grasslands. This is a great spot to …

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18.6 km

Old San Pedro Mountain Road summit

Highlight • Summit

This isn't the sort of road you'd take a vehicle on, nowadays - but it's great for nontechnical mountain biking, and this high point gives you nice views over the surrounding hills.

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19.6 km

Farallone View

Viewpoint

25.2 km

Southern Devil's Slide Trailhead gate and overlook

Highlight • Trail

At the southern opening of the 2013 Tom Lantos tunnels the old road is now a bike trail.

Tip by

26.3 km

Devil's Slide

Highlight • Cycleway

While the whole section of the bike trail, now closed to car traffic since the 2013 opening of the tunnel, clings precariously to the cliffside, the worst of the actual …

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28.0 km

Ace Trail

Highlight (Segment) • Trail

Best way to bypass the dangerous and shoulderless Cabrillo Highway 1. A better paved trail is planned and might be available by 2024.

Tip by

37.1 km

Milagra Ridge Road trailhead

Highlight • Trail

A barrier prevents cars from entering, but the first mile of this road continues with excellent pavement to the summit. A gravel trail then drops down to the coast to Connemara Drive and Oceana Blvd

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38.2 km

End point

Parking

Way Types & Surfaces

Way Types