This is something I am sure many people query, but it's something that I have not been able to find any clear advice for. It's regarding training for a given time, rather than covering a set distance. If there's anyone that might be able to offer some advice, I'd really appreciate it. Thanks.
Eat Uncle Vinny's 12" Belly-Buster BMT with the works, and you'll be set to run for 100 miles easy.