I signed up for the Triple Bypass ride again (hope I get in!) and was thinking about the list of notable and interesting Colorado endurance events. Some examples:
Super Longs (human powered from Boulder to Longs Peak and back)
This run was neither a race nor a full marathon, although by most standards could meet both.
22.8 miles on the trail with a highpoint of 12,080 feet with 4000 feet of climbing and descending. Not too shabby.
Luke took some fantastic photos, including this 12k foot high picture of the three of us: