One of the cool things about Waldo Lake is that it's so close to Oakridge yet it's so different. Oakridge is a patch of lush pacific northwest rain forest where as Waldo Lake has a high desert/Lake Tahoe feel. Putting the descriptions aside, Waldo Lake has some really cool rides that provide a little bit of everything. Sweet single track, stiff climbs, and killer views all centered around one of the cleanest and clearest lakes in the world. It's a great way point between a Oakridge and Bend if you are road tripping. There's also Willamette nearby which provides lift access downhill riding
List of Other Killer Rides
Ride Type: Single Track Loop (Ride to the Twins described here)
Distance: 15.68 mi
Elevation Gain/Loss: 2172 ft
Time: 3-5 hrs
Season: Late Spring-Fall
Trail Maps: Oakridge Oregon (Adventure Maps)