At IMWI last year:
T1 9:54 : Crossed the mat, pull wetsuit down below hip and dropped to the ground at the wetsuit strippers. Stood up and ran up the helix
(a Wisconsin only phenomenon
). Into the ballroom
(another Wisconsin only phenomenon
), grabbed bag and went to changing room. The volunteers were awesome. They went through the bag and asked what I needed and helped with everything. They brought over water and gatorade. I ate a gu and drank some water. I only put on a top, hr monitor strap, shoes, and helmet. Then ran out to sunblock people, and then to my bike. I had a long run down the transition to the mount line. Mounted and was on my way down the helix.
T2 4:48 : The volunteers were waiting at the dismount line to take our bikes. After dismounting, ran into ballroom, grabbed bag and into changing room. Took off helmet, glasses, bike shoes and socks and put on new socks, running shoes, hat and took gus and water bottle. Talked with volunteers for a moment and then out to sunscreen people. Then started the run.
I really did not sit and take my time nor did I change any clothing. The distances to and thru the transitions are a lot longer then even a Half Ironman
(my experience = Eagleman
). There is also the added detail of changing tents and bags, nothing can be left with your bike. Not even your shoes, only the pros can start with shoes on peddles.
Not many things about an Ironman T1/T2 are usual, so I think your routine will not be as usual as you think. I look at last years IMUSA transition times and base my goals on the fact that I am not the fastest but I am definitely not the slowest so I am hoping for between a 7-9min T1 and a 4-5min T2.