[aucisson_masque]

Well I assumed that during marathon you have places where you stop and drink. Usually there are even volunteers giving out water, you can have someone from your staff giving you a bottle of 1l of water-sugar.

But maybe I'm mistaken and they dont do that for marathon.

[_blk]

Most people do, yes but in this case you don't want to stop on a sub 2 is the point.