Another Type 1 here, have been for 34 years since age of 7, my eldest son is also Type 1, diagnosed 2 years ago. Everything said above is brilliant, one thing I would add though is, where possible, do NOT inject in your legs when riding or pre ride if you need to inject, the insulin will be absorbed much faster and can result in unexpected hypos etc. I am fortunate that I managed to get funding for an insulin pump a couple of years ago and it has totally transformed my life, my son has just started on one too, would definitely recommend it if he gets the chance to get one. I have done the last 5 mountain mayhems in a team of 4 and am also doing this years, managed to get through ok on injections but with the pump it was even better. Any further questions feel free to e-mail me, also, as above, he is not diabetic, he has diabetes which means he can do everything that everyone else can, just needs to think about it a little more. Just to add, my son is 12 and loves his mtbing too and his swimming, football, rock climbing…