Mostly Walmart brand sugar 
Gatorade for flavor. Plus Sodium Citrate and caffeine powder from purebulk.com.
I think she would have avoided GI issues completely had I not failed to tell her that I put 4000mg sodium in fuel bottle #2!
Please don’t give her any ideas! I’m still half dead from that day and I rode only half of it.
I had no idea this was something people were already doing!
Anyone know where I can find records (unofficial or official) for more obscure challenges like Trenching / Double Everesting?