Thanks for all the hints, tips and advice.
I intend to ride at about 16mph (6+ hours in the saddle.)
In addition to riding and running, I do three weight training sessions per week, focusing on core, arms + legs.
I use a Camelback for water, and Hammer Nutrition gels for extra carbohydrates as needed. I also have two bottle cradles in which I carry HEED (electrolyte) supplement.
The Century is early June, when our weather is still cool at start time and not too hot for the entire race day.
Fresh fruit, water and energy replacing snacks are available rest stops positioned every 10-18 miles throughout the course.
Sag wagons rove the course with water and road assistance to help riders experiencing mechanical trouble or those who become too fatigued to finish.
4/15/12 Platte River half marathon - Done
5/4/12 Greenland 50K - Done
7/29/12 Loveland Little Sprint Triathlon - Done
9/3/12 (54th birthday) - American Discovery Trail marathon
11/4/12 NYC marathon
12/1/12 Rock Canyon Half marathon