Race = Ironman Florida
Planning for 6:00 - 6:30 Ride
Use ~1 bottle of Gu Roctane Ultra Endurance mix per hour and don't want to drink warm nurition mix.
Plan to be on the bike around 8:40 am (1:30 swim +10 min T1)


I have two options to avoid drinking warm mix:

1. Pre-fill all nutrition and use 3 bottles for first 56 miles and pick up another 3 at special needs (freezing them overnight), or
2. Pre-fill nutrition and use 3 bottles for first 56 miles and pick up powder at special needs, thereafter stopping to mix a new bottle once I run out of the old bottle.

Figured it would be best to go with option 1, thus the questions below.


First 56 Miles

I will carry 3 nutrition bottles with me (downtube, seat-tube and single carrier behind my saddle). How "frozen" should each of these bottles (1 through 3) be (i.e., high concentration of ice cubes vs. actually frozen)?

My initial thinking:

1. Bottle 1 = High concentration of ice cubes mixed in.
2. Bottle 2 = Frozen
3. Bottle 3 = Frozen

Last 56 Miles

Planning to pick up 3 bottles at special needs (which I will have in a bag cooler filled with ice inside my special needs bag). How "frozen" should bottles 4 thorugh 6 be?

My initial thinking (same as above):

1. Bottle 4 = High concentration of ice cubes mixed in.
2. Bottle 5 = Frozen
3. Bottle 6 = Frozen

Based on your responses, what time should I put bottles on my bike (i.e., right when transition open at 4:30, right before transition closes, etc.)?


Thanks!

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@CycleHeavy