Did a ride over the North Cascades Highway today called the Native Planet Classic. From Winthrop, through North Cascades National Park, to Lake Diablo, and then back again. Ride was listed at 128 miles but I rode to the start from my hotel and ended up with 133 miles for the day. 10,400 feet of climbing.
The ride is basically 64 miles of climbing, 64 miles of descending. Very little flat riding.
It was my longest bike ride ever...
Here's the ride profile: