4.7
(6133)
7,813
riders
08:16
105km
1,660m
Gravel riding
Embark on the Ripplebrook & Skyline Road loop for a demanding gravel biking adventure deep within Mount Hood National Forest. This difficult route spans 65.5 miles (105.4 km) and challenges you with a significant 5444 feet (1659 metres) of elevation gain, typically requiring about 8 hours and 16 minutes to complete. You will navigate a varied terrain, transitioning from smooth paved sections to primitive forest paths and steep climbs. Along the way, anticipate tranquil views of Timothy Lake and sweeping panoramas of both Mount Hood and Mount Jefferson from elevated vantage points like Mount Lowe. The experience offers a true immersion into the wild, remote beauty of the region.
Planning for this remote route is crucial; ensure you are well-prepared before setting out. The loop commonly begins from the Ripplebrook store, which might offer limited amenities, but you should plan to be entirely self-sufficient for the duration of your ride. Be aware that potable water sources are scarce along the way, and cell service can be unreliable once you leave the vicinity of Timothy Lake. Always carry enough water, food, and repair supplies for the entire journey.
This route offers a unique opportunity to explore the deeper, less-traveled zones of the southwest quadrant of Mount Hood National Forest. It stands out for its diverse mixed-surface landscape, providing a comprehensive test of your gravel biking skills. The journey promises not just physical challenge but also a profound connection with the natural environment, far from urban distractions. It is an excellent choice if you seek a long, challenging ride with rewarding views and a sense of true wilderness.
Last updated: April 23, 2026
Tips
Your route passes through protected areas
Please check local regulations for:
Clackamas Wilderness
Mount Hood National Forest
Waypoints
Start point
Parking
Get Directions
42.4 km
Highlight • Lake
Tip by
53.2 km
Highlight • Structure
Tip by
80.7 km
Highlight • Forest
Tip by
105 km
End point
Parking
Way Types & Surfaces
Way Types
80.4 km
18.2 km
5.71 km
1.06 km
Surfaces
56.9 km
29.3 km
18.2 km
1.06 km
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Elevation
Highest point (1,370 m)
Lowest point (440 m)
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This route was planned by komoot.
This loop is generally considered a difficult gravel ride, requiring very good fitness. While some variations exist for different skill levels, the main route involves significant elevation gain and can be quite demanding. Expect sustained climbs and exhilarating descents.
The loop features a diverse mix of surfaces, including paved, asphalt, and unpaved roads, as well as primitive forest paths, singletrack, and doubletrack. Some sections are smooth, while others can be rough, especially after junctions or on specific trail segments. You'll encounter everything from gradual climbs to steep grades, and both paved and gravel descents.
Riders will be immersed in the deeper zones of the southwest quadrant of Mount Hood National Forest. Key scenic highlights include the tranquil Little Crater Lake, pristine river valleys, and panoramic views of both Mt. Hood and Mt. Jefferson from elevated points like Mt. Lowe. You might also see wildflowers in the spring.
The loop typically starts from the Ripplebrook store. This is a common and convenient starting point for accessing the route.
The best time to ride is generally during the warmer months when snow has melted and forest roads are clear. Spring offers the chance to see wildflowers, while summer and early fall provide more consistent conditions. Always check current trail and road conditions before heading out.
Dogs are generally allowed on trails and forest roads within Mount Hood National Forest. However, they must be kept on a leash, and owners are responsible for cleaning up after their pets. Always check specific regulations for any sections of the route that might pass through designated wilderness areas or sensitive habitats.
While there isn't a specific permit required for biking the Ripplebrook & Skyline Road loop itself, some areas within Mount Hood National Forest may require a Northwest Forest Pass or other recreation passes for parking at certain trailheads or day-use areas. It's advisable to check the Mount Hood National Forest website for the latest information on pass requirements.
Potable water sources are limited along the route, and cell service can be spotty outside of the Timothy Lake area. Riders should be self-sufficient and carry enough water, food, and emergency supplies for the entire duration of the ride due to the remote nature of parts of the route.
Yes, the route incorporates sections of several other paths and roads. Notably, it includes parts of the Cascading Rivers Scenic Bikeway and briefly merges with the Pacific Crest Trail (PCT - Oregon Section F). You'll also ride on significant forest roads like Forest Road 42 and Forest Road 4670.
Given the length and difficulty, you should bring a well-maintained gravel bike, plenty of water, high-energy snacks, a repair kit, navigation tools (GPS device or komoot app with offline maps), appropriate clothing layers, and a first-aid kit. Due to limited cell service, consider carrying a satellite communication device for emergencies.
A significant climb is the ascent up NF 4670 to the 5300 ft summit of Mt. Lowe, which can have grades of 5-10% and transitions from paved to white gravel. For descents, NF 42 is considered one of the best paved descents in Oregon, and there's a flying 9-mile gravel descent to the Collawash river via NF 6350.
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