Oat Hill via Little Carson Trail

The trail is often accessed from the Old Sled Trail trailhead, located on Fairfax-Bolinas Road. Be aware that the trailhead marker is small and can be easily missed. Parking is typically roadside near the trailhead, but facilities are limited, and there are no dedicated parking lots or toilet facilities directly on this trail.

The terrain is quite varied. The initial climb from Fairfax-Bolinas Road via the Old Sled Trail is steep, often dry and gravelly, so good grip footwear is recommended. It transitions from tree-covered sections to more open, exposed areas. Oat Hill Road, a wider fire road, can be rocky and rutted. The Carson Falls Trail itself is a narrower, hiking-only path that switchbacks through bay and oak woods, and also crosses grassland. The unique serpentine soil supports diverse native plants.

No, dogs are generally not permitted on trails within the Mount Tamalpais Watershed, where this route is located. This is to protect the natural environment and wildlife.

The best time to visit is during the rainy winter months. This is when Carson Falls is at its most dramatic, with impressive cascades. The trail can also offer a more solitary experience during this season. In autumn, you can enjoy vibrant orange leaves from the bigleaf maples along the Carson Falls Trail.

The Oat Hill via Little Carson Trail is located within the Mount Tamalpais Watershed. While there are no specific entrance fees for hiking this trail, certain activities or areas within the watershed may require permits. Always check the latest regulations from the Marin Municipal Water District (MMWD) before your visit.

The primary draw is Carson Falls, especially impressive after rainfall. Along the way, you'll find diverse landscapes, from open hills with rolling views to dense forest sections. The trail also passes by Oat Hill and offers occasional valley views. You might also spot unique native plants adapted to the serpentine soil.

The trail is rated as 'moderate' difficulty. The initial climb on the Old Sled Trail is quite steep and can be challenging, especially on a hot day. This section, combined with the overall distance of nearly 15 km, might be difficult for beginners or very young children. It's more suited for hikers with some experience and good physical condition.

Yes, the route utilizes sections of several official trails. You will hike along parts of the Kent Pump Fire Road, Oat Hill Fire Road, Old Vee Fire Road, and the dedicated Carson Falls Trail.

Given the steep and potentially gravelly sections, good grip footwear is essential. Since there are no water facilities, carry plenty of water, especially on warm days. Sun protection (hat, sunscreen) is advisable for exposed sections. Be aware of poison oak, which is plentiful, so long pants might be a good idea. A map or GPS device is also recommended as the trailhead marker can be small.

No, there are no toilet facilities directly on this trail or at Carson Falls. It's a rugged, natural experience, so plan accordingly and pack out everything you pack in.

This hike is estimated to take approximately 4 hours and 21 minutes to complete, depending on your pace and how long you spend enjoying the scenery, particularly at Carson Falls.