Big Kahuna Question

I’m really glad to be doing this challenge again. Here’s my question, some miles are harder than others, climbing for instance, so does anyone take this into account? Or is it a mile is a mile?

I will bite, come on, a mile is a mile no matter what, now granted, some are way harder than others, I knew this guy who would factor in his mileage according to wind in his face (10 mile wind in his face. would be a .85 mile to a actually mile) if you get my point, crazy stuff, in the long run a mile is a mile and everyone has to do it, just saying, Happy New Year

I thought somebody had a conversion factor for hills.