What's you longest bike so far? If I were you, I would do the run the week before the bike, because the bike will be easier/less wear and tear. I wouldn't do either of those any closer than four weeks to the event. RM, what do you think? I would be especially careful of the run- you don't want to get injured. You already know you can do the marathon distance. I don't think the 100 miles on the bike will be a problem. I guess it just all depends on how your training is going, and if you are even close to an injury or not.

Nanci