I like how simple it would be to say "I rode 100 miles on my bike" and have people be impressed, or know that you really achieved something. However, I wish there was some simple measurement for climbing. Im more interested in elevation and distance, but I cant just say "I rode a 7 mile loop with 3,000 feet of climbing at 8% grade last week" Its harder to visualize, and its less concrete than "I rode 100 miles." I will probably do one one day, but to be honest, it will be for the bragging rights only.