Three potato chips and 1/10 of a banana has the same sodium chloride and potassium as the endurolytes for way less money!!

You did super and the heat was awful. To continue and chance heat exhaustion was not an option. You definitely did the right thing. That heat will take it out of you so fast.

Keep training, recognize that heat is hard for you, and ride in cooler events!

Way to go to get over 50 miles.