Sierra Morena, Gordon Mill, Timberview, and Steam Donkey Loop

This loop is designed to be completed in approximately 3 hours and 27 minutes. However, your actual hiking time may vary depending on your pace, stops for photos, and breaks.

The Sierra Morena, Gordon Mill, Timberview, and Steam Donkey Loop is rated as moderate. It involves a significant elevation gain of about 449 meters (1,473 feet) and covers a distance of nearly 11 kilometers (6.8 miles), making it a good challenge for hikers with some experience.

Yes, sections of this route, including the Sierra Morena Trail and Steam Donkey Loop, are generally dog-friendly. However, always ensure your dog is on a leash and check for any specific park regulations within the El Corte de Madera Creek Open Space Preserve regarding pets.

The terrain varies, offering a mix of experiences. You'll find mostly smooth dirt paths with some roots and rocks, winding through nicely wooded slopes. Expect dips and turns, with some sections providing glimpses of canyons and views from meadows. Parts of the trail may also feature forests, ridges, and open meadows, crossing creeks.

Spring and fall are generally excellent times to hike this loop. In spring, you'll find many creeklets and wildflowers, while fall offers opportunities to search for chanterelle mushrooms. Winter can also be good for wildlife viewing, especially elk, but be prepared for potentially wet conditions.

This route offers several points of interest. You'll pass by the impressive Methusela Tree and another Old-Growth Redwood Tree. The Middle Timberview Trail and Methuselah Tree – Sierra Morena Trail Access are also notable sections. Additionally, you might encounter remnants of old logging machines and interpretive signs, offering a glimpse into the region's industrial past.

Generally, there are no entrance fees or permits required for day-use hiking in the El Corte de Madera Creek Open Space Preserve. However, it's always a good idea to check the official Midpeninsula Regional Open Space District website for the most current regulations before your visit.

Specific parking details for this combined loop are not provided, but trails within the El Corte de Madera Creek Open Space Preserve typically have designated parking areas. It's advisable to research the nearest trailhead parking for the Sierra Morena or Gordon Mill sections before you go, as parking can fill up quickly on busy days.

Yes, this route incorporates sections of several other trails. You will hike along parts of the Bay Area Ridge Trail - 04 - San Francisco and Peninsula, the Timberview Trail, the Gordon Mill Trail, and the Crosscut Trail.

Hikers often spot black-tailed deer and various bird species. In certain seasons, particularly winter and spring, there's an increased chance of seeing an elk herd. While less common, black bears are also known to inhabit the area.

While rated moderate overall, some sections, like the Steam Donkey Loop, are described as suitable for beginning and younger hikers due to well-built, easy-to-follow paths that aren't too steep. However, the full 11 km distance and 449 meters of elevation gain might be challenging for very young children or those new to hiking.