I have done versions two through five of TI and I have learned a few
things about packing for such a long ride. I am still very much a
novice but hear are a few things that worked for me. Use as small
amount of gear possible given the conditions. During version two I
packed so much crap out of anxiety that I weighed myself down so much
I was out the back of the pack in the first 100 yards. By version five
I had things dialed in pretty well. From the start look at how far you
will have to go to the first check point and just take enough fluids
to get there. Then fill up with enough fluids for seventy or so miles
and get going. A mistake would be to fill up, especially during the
day, for 100 to 125 miles, unless you are wanting to win the race try
not to weigh yourself down as you will likely need to keep pushing to
make the cut offs unless the weather is ideal. Try to view the race in
segments. Let's say 50-75 miles. If you have to stop at a farm to get
fluid it certainly is not the end of the world.
I use a Camelbak called a Lobo. There has only been one TI where it
was actually warm so having tons of fluids is not necessary. When I
finished TI V5 I filled up with 148 ounces (100 ounce bladder and two
bottles) at 8:00 pm and rode roughly 125 miles and 11 to 12 hours on
that. So my point is, bring the capacity to carry at least 100 ounces
but only fill up with as much water to make it to the nearest town
that is 50-75 miles away. Of course, knowing GT there won't be a town
for 100 miles!!!! :)
My best advice, is to ride twenty five miles and then do it again
until you are done.