Bon Tempe Lake, Alpine Lake & Laurel Dell Falls loop

This hike is quite long, covering approximately 17.9 km (11.1 miles). It generally takes around 5 hours and 20 minutes to complete, depending on your pace and how often you stop to enjoy the scenery.

The terrain is highly varied. You'll find generally flat or gently rolling paths around Bon Tempe Lake, often gravel, paved, or dirt. As you head towards Alpine Lake and Laurel Dell Falls, especially via the Cataract Trail, the path becomes more challenging with deep, forested sections, mossy rocks, wet steps, and switchbacks. The Laurel Dell fire road offers a smoother descent.

The route offers diverse scenery. You'll pass the crystal-clear waters of Bon Tempe Lake & Dam, Alpine Lake, and Lake Lagunitas Spillway and Picnic Platform. A major highlight is Laurel Dell Falls, part of the impressive Cataract Falls series. You'll also experience golden rolling hills, dense redwood groves, and open areas with diverse trees like Douglas fir and California bay.

This loop is rated as difficult. While sections around Bon Tempe Lake are easier, incorporating the Cataract Trail to Laurel Dell significantly increases the challenge due to substantial elevation changes. The Cataract Trail alone can involve a 1,000-foot climb over 1.5 miles. Sure-footedness and sturdy hiking shoes are highly recommended for the more strenuous parts.

Yes, dogs are generally allowed on trails within the Mt. Tamalpais Watershed, but they must be kept on a leash at all times. Always check for specific signage or regulations at the trailhead, as rules can vary.

The trail is enjoyable year-round, but the best time depends on your priorities. For lush greenery and impressive waterfalls, visit after winter rains (typically late winter to spring). Spring and fall offer pleasant temperatures and vibrant foliage. Summer can be warm, so an early start is advisable. Winter hiking is also possible, but be prepared for potentially wet and muddy conditions, especially on the Cataract Trail.

Generally, there are no entrance fees or permits required for day hiking on most trails within the Mt. Tamalpais Watershed. However, parking at certain trailheads, such as the Lake Lagunitas Picnic Area and Trailhead, may require a small fee. Always check the Marin Municipal Water District (MMWD) website for the most current information on regulations and fees.

Parking is available at several points around the watershed. A common starting point with facilities is the Lake Lagunitas Picnic Area and Trailhead. You can also find parking near Bon Tempe Lake. Be aware that parking areas can fill up quickly, especially on weekends and holidays, and some may require a fee.

The full loop, including the Cataract Trail, is rated as difficult and is not recommended for beginners or young children due to significant elevation changes and challenging terrain. However, the easier sections around Bon Tempe Lake (about 3.7 to 4.1 miles with less elevation gain) are suitable for families and most fitness levels.

Yes, this route utilizes and intersects with numerous other trails within the watershed. You'll hike sections of the Collier Trail, Cataract Trail, Lower Northside Trail, CC Boys Trail, Northside Trail, and Kent Trail, among others. This interconnected network allows for various extensions or modifications to your hike.

For the strenuous parts, particularly the Cataract Trail, it's best to wear sturdy hiking shoes with good grip. Consider bringing trekking poles for stability on the steep, wet, and rocky sections. If you want to experience the waterfalls at their peak, plan your hike after significant winter rains, but be prepared for potentially muddy and slippery conditions.