Mount Olympia and North Peak Loop

This loop is consistently graded as difficult or strenuous. It involves significant elevation gains and varied terrain, including steep, narrow single-track footpaths and wide fire roads. Good physical preparation is essential.

The Mount Olympia and North Peak Loop is a substantial hike. While individual times vary, komoot estimates the duration to be around 6 hours and 35 minutes for the 19.1 km (11.9 miles) route. Plan for a full day, especially if you want to enjoy the views.

The terrain is quite varied. You'll encounter wide fire roads and steep, narrow single-track footpaths. Expect a lot of uphill climbing, with some sections, particularly on the ascent to Mount Olympia and North Peak, being very steep and potentially having loose gravel. After rain, parts of the trail can become very slippery, and sections like the North Peak Trail are very exposed to the sun.

The scenery is a major highlight. You'll traverse diverse landscapes, including serpentine grasslands and blue oak woodlands. From Mount Olympia, there are virtually unobstructed panoramic views north, east, and west, including vistas of nearby bays, rivers, and cities. North Peak also offers significant views, often with fewer crowds than the main Mount Diablo summit.

Yes, the route features several points of interest. You'll pass by the Donner Canyon Road & Back Creek Trail Access, the Middle Falls Trail & Falls Trail Junction, and the scenic Donner Creek Falls.

The trail offers different experiences throughout the year. Winter hikes can present snow at higher elevations, while fall brings some beautiful foliage. Spring offers lush greenery. However, be mindful that parts of the trail are very exposed to the sun, making ample water crucial during warmer seasons. Starting early in the morning is often recommended to avoid heat and potentially spot wildlife.

The trail is typically accessed from the Donner Canyon Road trailhead in Clayton, which is part of Mount Diablo State Park. Parking is available at the trailhead, but it can fill up, especially on busy weekends. Arriving early is advisable.

Yes, as this trail is located within Mount Diablo State Park, there is typically an entrance fee per vehicle. You can check the official California State Parks website for current fee information and any specific regulations for Mount Diablo State Park.

Dogs are generally allowed on paved roads and fire roads within Mount Diablo State Park, but they are often restricted from single-track hiking trails. It's best to check the specific regulations for Mount Diablo State Park before bringing your dog, as rules can vary and may not permit dogs on all sections of this loop.

Yes, the route utilizes sections of several other official trails. You will find yourself on parts of the Falls Trail Loop, the Mokelumne Coast to Crest Trail, the ADT - California - T - Seg 7, the Falls Trail, and Mount Olympia Road during your hike.

Given the strenuous nature and varied terrain, you should wear supportive hiking shoes with good traction. Bring ample water, especially during warmer months, as sections are exposed. Sun protection (hat, sunscreen) is also recommended. A good map or a GPS device is advisable for navigation due to the varied trail types.