Scary_Turtle
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Jeesh 5 or 6 gels your stomache will be a mess. I do one gel and hour in this case I would do a gel at 10km and another at 16ish kms. I would also use cytogen racing mix (powder you mix with water) 30 mins before. Makes you feel better along the entire run.stretch, massage and plan your refuelling strategy. 5 or 6 gels for the run and some good carbs the day before. hydrate. well.
Honestly I don't use gels on a 21km those are training runs but for a first timer 1/2 is more than enough.


fits over two fingers while running . Works perfectly for me