Eagle Peak Loop via Madrone and Corduroy Hills Trail

This loop offers a rugged and varied terrain, making it quite challenging for jogging. Expect a mix of unpaved surfaces, including rocky and uneven sections. The initial climb on the Madrone Trail is particularly steep, and the unofficial trail to Eagle Peak is narrow, extremely steep, and can be overgrown. The Corduroy Hills Trail also features narrow, steep, rough, and overgrown singletrack sections with rocky outcrops. Some parts can be impassable when wet, even in summer they are barely climbable.

No, this loop is rated as difficult and is best suited for fit and experienced joggers. The significant elevation gain and rugged, steep terrain make it very demanding. It's generally not recommended for beginners or families looking for a casual outing, especially due to sections with poison oak and challenging footing.

Despite its demanding nature, the loop offers spectacular and diverse scenery. You'll experience oak-dotted meadows with expansive views of the San Ramon Valley and suburban Danville. From Eagle Peak and various points along the ridge, you'll get stunning vistas of Mount Diablo and the entire East Bay. The Corduroy Hills Trail also provides great views of Danville.

The best time to visit is in spring when the hills are vibrant green and wildflowers are blooming. Autumn also offers attractive hues. While the park is popular on weekends when the grass is green, it can get very hot and dusty in the summer, making early morning jogs preferable during those months. Avoid attempting the trail after heavy rains, as some steep sections can become impassable.

The Eagle Peak Loop is located within the Las Trampas Wilderness Regional Preserve. Parking is typically available at the main trailheads for the preserve. It's advisable to arrive early, especially on weekends, as the park can get busy.

Generally, there are no entrance fees or permits required for day use at the Las Trampas Wilderness Regional Preserve. However, it's always a good idea to check the official East Bay Regional Park District website for any updated regulations or specific requirements before your visit.

Yes, dogs are generally allowed in the Las Trampas Wilderness Regional Preserve. However, they must be kept on a leash at all times to protect wildlife and ensure the safety of other trail users. Be aware that some sections of the trail are narrow and steep, which might be challenging for some dogs.

Yes, this route utilizes several official trails within the Las Trampas Wilderness Regional Preserve. You'll find yourself on sections of the Madrone Trail, Virgil Williams Trail, and the Corduroy Hills Trail. It also briefly touches parts of the Las Trampas Ridge Trail and Chamise Trail, among others, as it winds through the preserve.

Given the trail's difficulty and ruggedness, it's crucial to be well-prepared. Bring plenty of water, especially during warmer months, as there are no water sources on the trail. Wear sturdy trail running shoes with good grip. Long pants or gaiters are recommended due to prevalent poison oak in some areas. Sun protection (hat, sunscreen) is also essential, as many sections are exposed.

The primary highlight is reaching Eagle Peak itself, which offers expansive views. The Corduroy Hills Trail is also a notable feature, known for its unique terrain and views. The loop takes you past three peaks: Las Trampas, Vail, and Eagle, providing numerous viewpoints throughout the journey. You'll also experience diverse ecosystems, from oak woodlands to chaparral and grasslands.

Due to the trail's challenging nature, especially the "brutally steep" Madrone Trail ascent and the rugged sections, consider starting your jog very early in the morning, particularly in summer, to avoid the heat and dust. Be vigilant for poison oak, which is prevalent, especially on the unofficial trail to Eagle Peak. If the weather has been wet, some steep, eroded sections might be extremely difficult or impassable.