Hi, i'm on novorapid and levemir, I do 70 - 80 mile rides regularly, i tend to test every hour during rides aiming to keep bm's between 10 - 14. I usually have porridge and a banana pre ride with just 2 or 3 units novorapid. (I'd usually have 9 or 10 units). I take a good supply of jelly babies...