Multnomah County, Oregon

Looking for the best mountain biking in Multnomah County? We've got you covered with the top trails, trips, hiking, backpacking, camping and more around Multnomah County. The detailed guides, photos, and reviews are all submitted by the Outbound community.

Top Mountain Biking Spots in and near Multnomah County

  • Portland, Oregon

    Powell Butte Nature Park Loop

    6.22 mi / 1004 ft gain
    Before officially becoming a nature park in 1987, Powell Butte was primarily known for being home to four 50-million gallon underground reservoirs. Today, the wide expanse of land is packed with miles of trails-- the perfect place for hikers, mountain bikers, and even horseback riders to get thei...
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  • Amboy, Washington

    Siouxon Trail to 14 Mile Falls

    5.0
    13.03 mi / 2310 ft gain
    When you park at the top of the trail, all you see is layers and layers of emerald trees and ground clear of any underbrush. Once on the trail, you start on a rapid decline that brings you to the first of the many streams along this hike. Cross the bridge made out of logs and head towards the ma...
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  • Clackamas County, Oregon

    Bike the Timothy Lake Trail

    4.5
    15 mi
    Located about 2 hours outside of Portland, Timothy lake is a great home base to adventure from. It has many campgrounds, lots of lake access and great loop around the lake that is open to both hiking and Mt biking. While the hiking loop is 13 miles, the Mt. bike loop is 15 since you need to make ...
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  • Clackamas County, Oregon

    Little Crater Lake to Timothy Lake Campground

    3.42 mi / 338 ft gain
    Little Crater Lake to Timothy Lake Campground is an out-and-back trail that takes you by a lake located near Government Camp, Oregon.
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