Lost Lake, Bloom Lake, and Spruce Creek Loop

This route is considered an expert-level mountain biking trail. It features significant elevation changes and technical terrain, including sections described as "very rooty" and a "brutal steep rocky, loose jeep road" climb. It's rated as a Black Diamond difficulty trail.

The Komoot tour data suggests that completing the entire loop typically takes around 4 hours and 12 minutes for mountain biking. However, this can vary based on your skill level and how often you stop to enjoy the scenery.

Expect a challenging mix of terrain. The route includes substantial climbs and descents. Sections of the Spruce Creek Run Road are characterized as a "rocky grind," and some descents can be "very rooty" and potentially dangerous when wet. There are also sections of fire roads and other trails like Bloom Lake Trail.

As this trail is located within the Clatsop State Forest, dogs are generally allowed. However, it's always best to keep them on a leash to protect wildlife and ensure a pleasant experience for all trail users. Please practice Leave No Trace principles and pack out all waste.

The best time to ride this loop is typically during the drier months to avoid the "exceptionally dangerous when wet" conditions mentioned for some sections. Late spring through early fall usually offers the most favorable weather. Always check local weather conditions before heading out.

Access to the trails within Clatsop State Forest, including the Bloom Lake Trailhead, is generally free. You typically do not need a specific permit for day-use mountain biking. However, parking can fill up quickly, especially on weekends.

Parking is available at trailheads such as the Bloom Lake Trailhead. Be aware that parking areas, particularly for popular trails, can fill up quickly, so arriving early is advisable.

The loop offers picturesque scenery, including views of Bloom Lake and Lost Lake. The route also utilizes parts of Spruce Creek Run Road, which offers its own unique character.

Yes, the route incorporates sections of various trails and roads. You will ride on parts of Lost Lake Road, Spruce Creek Run Road, August Fire Road, Military Creek Road, and Bloom Lake Trail. This connectivity allows for diverse loop opportunities and potentially extended rides.

Cell service can be unreliable in remote areas like the Clatsop State Forest. It is highly recommended to carry physical maps or download offline maps of the area before you go, as you may not be able to rely on your phone for navigation or emergencies.

Given the trail's difficulty and length, you should bring plenty of water, snacks, a repair kit for your bike, a first-aid kit, and appropriate layers of clothing. As cell service can be spotty, carrying maps or having offline navigation is crucial. A helmet and proper mountain biking gear are essential.

No, this loop is explicitly described as an "expert-level" and "Black Diamond" trail due to its challenging terrain and significant elevation changes. It is not recommended for beginner mountain bikers or families looking for a leisurely ride.