I recently rode Mana Rd on the Big Island of Hawaii. Mana Rd spirals down the slopes of Mauna Kea from about 7,000 ft near the crest of Saddle Rd to the town of Waimea at about 3,000ft. We hitched a ride to the top and made it a downhill run.
Although you lose 4,000 ft of elevation in 45 miles riding the direction we did, there's still a surprising amount of steep uphill.
The quality of the road varies from
po'okela to almost unrideable.
It wasn't a day for views of the ocean as we were in the clouds most of the time, but wild turkeys, wild pigs, nenes and other wildlife kept us entertained.