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These threads will be humming on the 23rd/24th/25th April with people who got sick from eating or drinking inappropriately, including people who've used gels in training but then found at race pace they can't deal with them. A marathon's a very unpleasant experience if you get any kind of gastric distress. Use with real caution, and don't gulp anything. And if you don't feel you need them, don't feel obliged to use them - lots of people get by fine without.
guess you are doing a 10 miler this weekend as part of your taper LTS? You could could still try one gel - won't help you but at least you will know if it has any affect on your tum...
I use SIS Go gels as people say they are the best for swallowing. Not that nice but they do the job...
Zip Fit gels all the way for me!
These ones are packed with 51g of Carbohydrate compared with the SiS ones which are about half of that..
I used just 3 during the Rotterdam Marathon this weekend, but as mentioned before they are VERY cloggy (I would say gloopy) so my tactic is to take one as you are approaching a water station then gulp as much as you can to wash it down.
On a marathon I take at 12 miles, 17 miles and 22 miles.