hello
For me I take small chocolate bars, crisps, I share a banana with my riding buddies, I have Jelly beans in case of going really low. I know some will disagree and that is fine, this is my experience and my body.
Hydration is massively important, guess you already know that if you do 60miles at a time.
Endurance sports are an odd thing, after almost a marathon of running and cycling off road in a competition I was at 3.3. Wondered why I had trouble staying focused and had to literally lift my legs up.
So why is this important.
Two things, I wish I had done the distance under conditions where I could have tested every 30 minutes to see what my level drop off was, I could then have tested foods to see what is good and what is not so good.
I wish I had started the comp with my levels at almost 7 and with the knowledge from the testing I would have had stayed in my ideal power range, 5 to 7 for me.
Whilst I am not advocating eating what you want when you want it is in my opinion easier to manage an occasional high when doing sport than a low, which lets face it has the potential to let mistakes happen quickly and have serious consequences.
Take the time to explore what works for you, it is away from the normal daily diet and supports you having fun and doing things in life that make it worth the fight. Believe me the doctor said I wouldn't skydive again on diagnosis. He was wrong, so wrong, but I had a lot of learning to do to stay safe and understand hypoxia, Adrenalin, constant heat on the ground, sub zero at high altitude, hydration to name a few things.
The point is if you want this then go experiment, you will get an idea of good vs. bad really quickly but never give up on the things you love.