If you happen to be in the Wallowas area with a couple days to kill this ride is spectacular. It's a perfectly balanced ride, with excellent ratios of climbing to descending and gravel to pavement. The difficult climb out of the Grand Ronde River presents you with an amazing view of Joseph Canyon; ample payment for your hard work.
This is a relatively short ride, though the only place to get supplies is in Troy.
Paved and dirt
2-4 days/128 miles
Summer and early fall