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United States
California
Sonoma County

North Slope to Bummer Peak Loop

Easy

4.7

(3179)

10,316

hikers

North Slope to Bummer Peak Loop

01:11

4.39km

60m

Hiking

The North Slope to Bummer Peak Loop offers a delightful journey through varied terrain, from shady oak woodlands to open grassy meadows. You'll be treated to expansive views of the Russian River Valley, surrounding mountains, and Lake Sonoma, especially from the summit of Bummer Peak and a well-placed bench along…

Last updated: June 9, 2026

Waypoints

A

Start point

Parking

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B

4.39 km

End point

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Way Types & Surfaces

Way Types

3.68 km

697 m

< 100 m

Surfaces

4.38 km

< 100 m

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Elevation

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Weather

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Today

Wednesday 8 July

32°C

11°C

0 %

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Max wind speed: 17.0 km/h

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Frequently Asked Questions

Where can I park to access the North Slope to Bummer Peak Loop?

The trailhead for the North Slope to Bummer Peak Loop is conveniently located within the Lake Sonoma Recreation Area, a short drive from major highways in Geyserville. You'll find designated parking areas with amenities like restrooms and picnic areas nearby.

Is the North Slope to Bummer Peak Loop suitable for beginners?

The difficulty of this loop can vary. The initial North Slope Trail segment is generally easy, with gentle slopes and wide paths, making it accessible for a wide range of abilities. However, combining it with the ascent to Bummer Peak introduces more challenging elements, including moderate inclines and uneven, rocky terrain. Hikers should be prepared for some steep sections, especially when heading towards Bummer Peak.

What is the terrain like on this trail?

The trail offers diverse terrain. You'll traverse oak woodlands and grassy meadows. A notable feature is an enchanting redwood grove along the North Slope Trail, providing cool shade. As you ascend towards Bummer Peak, expect steeper inclines and rocky sections. Some flatter areas can be muddy, especially after rain, and certain steep hillsides may resemble 'pig trails' requiring careful navigation.

What kind of views can I expect along the route?

The loop offers stunning panoramic views. You'll enjoy breathtaking vistas of the surrounding mountains, vineyards, and the Russian River Valley. Views of Lake Sonoma and the broader Sonoma County wine country are also common, with numerous overlooks perfect for photography.

Does the trail intersect other well-known paths?

Yes, the route incorporates sections of several official trails within the Lake Sonoma Recreation Area. You will hike along parts of the North Slope Trail, Crowley's Lake View Trail, and the Half A Canoe Loop, among others, as you make your way to Bummer Peak.

Is the North Slope to Bummer Peak Loop dog-friendly?

While many trails in the Lake Sonoma Recreation Area allow dogs, it's always best to check the specific regulations for this loop before you go. Generally, if allowed, dogs must be kept on a leash. Please ensure you pack out all pet waste.

Do I need a permit or pay an entrance fee for this hike?

The North Slope to Bummer Peak Loop is located within the Lake Sonoma Recreation Area. While there might not be a specific permit required for hiking this particular trail, it's advisable to check the official Lake Sonoma Recreation Area website for any current entrance fees, parking fees, or specific regulations that might apply to visitors.

What is the best time of year to hike the North Slope to Bummer Peak Loop?

Spring and fall are generally the best times to hike this loop, offering pleasant temperatures and vibrant scenery. Spring brings wildflowers, while fall showcases beautiful autumn colors. Summer can be hot, especially on exposed sections, so an early start is recommended. Winter hiking is possible, but be prepared for potentially muddy conditions, especially in flatter areas, and check weather forecasts for rain.

What wildlife might I spot on the trail?

The diverse ecosystems along the loop provide habitat for various local wildlife. Hikers might spot deer grazing in the meadows, hawks soaring overhead, and rabbits darting through the undergrowth. Keep an eye out for other small mammals and birds native to the Sonoma County region.

What should I bring for a hike on this loop?

Given the varying terrain and potential for steep sections, sturdy hiking shoes are recommended. Bring plenty of water, especially on warmer days, as there may not be water sources directly on the trail. Sun protection (hat, sunscreen) is essential for exposed areas, and layers are advisable due to potential temperature changes. A map or GPS device is also helpful for navigation.

Are there any specific sections that are particularly challenging or easy?

Yes, the loop offers a mix. The North Slope Trail section is notably easier, designed with gentle slopes and wide paths. However, the ascent towards Bummer Peak, particularly on sections like the Bummer Trail, involves more challenging elements with moderate to steep inclines and uneven, rocky terrain. Be prepared for a significant change in effort when transitioning from the North Slope Trail to the Bummer Peak ascent.

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