Aquinas and Serenity Trail Loop

The entire loop is approximately 11.4 kilometers (7.1 miles) long. Komoot estimates it takes about 3 hours and 28 minutes to complete, but this can vary based on your pace and how often you stop to enjoy the views.

The terrain is varied and can be challenging. The Aquinas Trail often starts with a gentle climb through woods but quickly becomes a demanding ascent with very steep and difficult sections, especially along the ridge line. Expect tricky footing, and be aware that washouts can occur in winter. While some parts are like fire roads, the Serenity Trail can be less maintained. You'll experience both shaded, wooded areas and open chaparral.

Given its 'moderate' difficulty rating and sections described as 'very difficult' and 'very steep' with 'hazardous terrain,' this loop might be challenging for absolute beginners. Hikers should have some experience and be prepared for significant elevation changes and potentially tricky footing.

As you climb, you'll get limited views of the South Bay Area, mountains, and glimpses of Lexington Reservoir. Higher elevations offer views of Cupertino and Campbell. Notable viewpoints include the View of the South Bay from El Sereno Open Space Preserve and the Lexington Reservoir View, though some views may be partially obscured by power lines and trees.

Spring is an excellent time to visit, especially for wildflower enthusiasts, as the first half-mile of the Aquinas Trail is known for an abundance of wildflowers like shooting stars. Be mindful that winter rains can lead to washouts, making some sections more challenging.

Specific parking details are not provided in the tour data, but the trail is located in Monte Sereno, California, within the El Sereno Open Space Preserve. Hikers typically access the trail from designated parking areas near the preserve's trailheads. It's advisable to check local park websites for the most current parking information.

The Aquinas and Serenity Trail Loop is located within the El Sereno Open Space Preserve. Generally, open space preserves in this region do not require entrance fees or permits for day-use hiking. However, it's always a good idea to check the official Santa Clara County Parks or Midpeninsula Regional Open Space District websites for any specific regulations or temporary closures before your visit.

The provided information does not explicitly state dog-friendliness. For trails within open space preserves, dogs are often permitted but typically require a leash. Please check the official El Sereno Open Space Preserve regulations regarding dogs before your hike.

Given the challenging and steep sections, sturdy hiking boots with good ankle support are highly recommended. Bring plenty of water, especially for warmer days, as there are no water sources on the trail. Sun protection (hat, sunscreen) is essential for open sections, and layers are advisable for changing conditions between shaded woods and exposed ridges. Trekking poles can be helpful for the steep ascents and descents.

Yes, the route incorporates sections of several other trails. You will hike along parts of the Bay Area Ridge Trail - 04 - San Francisco and Peninsula, Aquinas Trail, Serenity Trail, Montevina Road, Loma Vista Trail, and Montevina Ridge Trail.

The trail offers a mix of shaded, wooded areas and open chaparral. In spring, the first half-mile of the Aquinas Trail is particularly vibrant with wildflowers, including shooting stars. You'll also see evidence of landslides in gullies, adding to the natural character of the landscape.