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Routes
Mountain biking trails
United States
California
Los Angeles County
Pasadena

El Prieto Trail loop from John Muir High School

Hard

4.9

(3593)

7,772

riders

El Prieto Trail loop from John Muir High School

01:49

21.2km

480m

Mountain biking

Hard mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike. The starting point of the route is accessible with public transport.

Last updated: April 7, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Angeles National Forest

Waypoints

A

Start point

Bus stop

Get Directions

1

11.5 km

El Prieto Trail

Highlight • Trail

El Prieto Trail is a sweet singletrack with lots of switchbacks, stream crossings and rock gardens. Intermediate riders will love it.

Tip by

2

18.4 km

Burnt House Ruins on Fair Oaks Avenue

Highlight • Historical Site

The road south creates a nice, fast, gradual descent from the north side of Altadena. Just be safe and keep an eye out for cross-traffic at the intersections.

Tip by

B

21.2 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

5.99 km

5.39 km

4.90 km

4.01 km

882 m

< 100 m

Surfaces

8.53 km

8.26 km

3.57 km

516 m

107 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 (720 m)

Lowest point (330 m)

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Weather

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Today

Sunday 5 July

28°C

18°C

0 %

Additional weather tips

Max wind speed: 11.0 km/h

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Description

If you're seeking a truly unique and challenging mountain biking experience near Los Angeles, the El Prieto Trail loop from John Muir High School delivers. This difficult 13.2-mile (21.2 km) route packs in 1565 feet (477 metres) of elevation gain, taking roughly 1 hour and 49 minutes to complete. It's a technical singletrack adventure best suited for intermediate to advanced riders who appreciate diverse terrain and a good workout, offering one of the best El Prieto Trail loop mountain biking routes from John Muir High School.

What to expect on El Prieto Trail loop from John Muir High School

What makes this route stand out is its incredible variety. You'll navigate a predominantly singletrack experience, winding through a lush, oak-lined canyon that offers a welcome reprieve from the sun. Expect numerous stream crossings, tight 180-degree switchbacks, and challenging rock gardens that demand advanced riding skills. As you climb, the trail can become more exposed, rewarding your effort with panoramic views of Pasadena and the broader Los Angeles area, all nestled within the stunning San Gabriel Mountains. This El Prieto Trail difficulty elevation gain terrain mountain biking experience is a true test of skill and endurance.

Planning your visit

The El Prieto Trail is multi-use, shared with hikers and equestrians, especially on weekends, so using a bell is highly recommended for safety and etiquette. Parking is typically available near the former John Muir High School (now Pasadena High School), which serves as a convenient starting point for this loop. Be aware that poison oak is present year-round along the trail, so dress appropriately and know how to identify it. This trail is best enjoyed by those with good physical fitness and advanced riding skills.

  • Distance: 13.2 miles (21.2 km)
  • Elevation gain: 1565 feet (477 metres)
  • Difficulty: difficult
  • Estimated time: 1 hours and 49 minutes

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