El Prieto and Fern Truck Trail Loop

You can find street parking in Altadena, often near Loma Alta Park. The starting point is commonly near the JPL entrance or at the end of W Altadena Drive.

The El Prieto and Fern Truck Trail Loop is located within the Angeles National Forest. While there isn't a specific entrance fee for the trail itself, a Forest Adventure Pass may be required for parking in certain areas within the National Forest. It's always best to check the latest regulations before your visit.

Yes, this trail is generally dog-friendly. Please ensure your dog is on a leash at all times and that you pack out any waste to help keep the trail clean for everyone.

The trail can be enjoyed year-round, but spring and fall offer the most pleasant temperatures. Spring brings wildflowers, while fall showcases beautiful colors. Be mindful of potential heat in summer and cooler, possibly wet conditions in winter. The El Prieto side has multiple stream crossings, which can be more significant after heavy rains.

The terrain is quite varied. It starts on a paved path, transitions to a dirt road, and then to singletrack. The El Prieto Trail section is known for being rocky and rooty, with 180-degree switchbacks and stream crossings in an oak-lined canyon. Fern Truck Trail is a wider, steadier climb, often with a 10% incline.

You'll experience a mix of wooded areas, especially on the El Prieto Trail climb, and more open sections with commanding views. As you gain elevation, you'll be treated to panoramic sightlines overlooking the cityscape, Pasadena, and the Los Angeles basin. You might also see wildflowers, fall colors, and a river/creek.

Yes, the El Prieto Trail section winds through an oak-lined canyon with multiple stream crossings. You can also spot interesting old dams along this part of the trail, which are remnants of historical water regulation efforts.

For hikers, it's generally recommended to ascend via the El Prieto Trail and descend via Fern Truck Trail. Hiking down El Prieto is considered less desirable due to its steep and technical nature, especially with rocks and some exposed areas.

Yes, the route also passes through sections of the Gabrielino Trail, Fern Truck Trail, and the El Prieto Trail.

The trail is described as being roughly half-shaded and half-exposed. The El Prieto Trail section, in particular, offers more shade as it winds through an oak-lined canyon.

Yes, from the Brown Mountain Saddle, you have the option to extend your adventure. You can do an out-and-back towards the Ken Burton Trail for a longer hike.