Sebring ... less than 10 feet per mile
I registered for the 24 hour non-drafting event and have absolutely no idea how I’ll do.
My training terrain averages 90 feet of climbing per mile and more. I doubt that I could do that for 24 hours. No. I’m SURE that I couldn’t do that for 24 hours.
Allan Duhm racked up 425 miles on the 24 hour event a few years ago. An amazing feat especially after breaking a leg on the Sebring track just the year before. That’s an average speed of more than 16 mph.
I don’t think climbing prowess translates into flatland prowess. Stamina and endurance will likely be the key. Not to mention nutrition, hydration, mechanical preparedness, clothing... and the absolutely essential: good lighting for the black dark twisty conditions of the race course at night.