From Mather to Hetch Hetchy Reservoir and back

This route is primarily a challenging paved road cycling experience from Mather to the Hetch Hetchy Reservoir entrance and back. It involves significant elevation gain, making it a hard ride requiring a very good fitness level. It's important to note that off-road mountain biking on trails within the Hetch Hetchy area of Yosemite National Park is generally prohibited to protect the area's status as a primary water source.

The Hetch Hetchy Valley, often called Yosemite's "lost twin," offers spectacular scenery. You can expect impressive views of towering granite cliffs, waterfalls, and alpine meadows, especially around the Hetch Hetchy Reservoir and the O'Shaughnessy Dam. In spring, the area is particularly noted for thundering waterfalls and vibrant wildflower displays.

Yes, the Hetch Hetchy area is part of Yosemite National Park, so standard park entrance fees apply. You may also need to make a reservation to enter the park during peak seasons. For the most current information on fees and entry requirements, please check the official National Park Service website: nps.gov.

Parking is available at the Hetch Hetchy entrance station, though it can fill up, especially during busy times. Arriving early is often recommended. Specific parking details for starting directly from Mather would depend on local arrangements there.

Spring is often recommended for its thundering waterfalls and vibrant wildflower displays. However, the route can be enjoyed in late spring, summer, and fall. Always check weather conditions, as winter can bring snow and road closures, making cycling difficult or impossible.

Due to the significant elevation gain and the route being primarily on paved roads with vehicle traffic, this ride is generally considered "hard" and requires a very good fitness level. It is not typically recommended for beginners or young children.

Within Yosemite National Park, dogs are generally permitted on paved roads and in developed areas, but not on unpaved trails. Since this route is primarily on paved roads to the Hetch Hetchy entrance, dogs on a leash would likely be allowed. However, always verify current regulations on the official NPS website before your visit.

While the primary route is on paved roads, it does pass near or briefly touch sections of some local trails. Specifically, the route covers small portions of the Smith Peak Trail (5%), Poopenaut Valley Trail (4%), and Camp Mather Trails (4% and 1%). However, remember that off-road mountain biking is prohibited in the Hetch Hetchy wilderness area.

Given the significant elevation and potential remoteness, it's crucial to bring plenty of water, snacks, appropriate cycling gear, sun protection, and layers of clothing. A bike repair kit and a first-aid kit are also highly recommended. Be prepared for changing weather conditions.

The Hetch Hetchy area itself has very limited services. Mather, being a camp, may offer some basic amenities or seasonal food options. For more extensive dining and accommodation, you would typically need to look outside the immediate Hetch Hetchy entrance area, towards towns like Groveland or within other parts of Yosemite National Park.

The Hetch Hetchy area is generally less crowded than more popular parts of Yosemite Valley, offering a more serene experience. However, unlike Yosemite Valley which has dedicated paved bike paths, cycling to Hetch Hetchy is primarily on public paved roads with vehicle traffic and is known for its challenging elevation gains, rather than extensive off-road mountain biking trails.