The Underground 5K

The Underground 5K is held in Huntsville, Alabama, on October 30, 2026, with two evening events. The Underground Mile starts at 6:30 p.m. over a single mile, and the Underground 5K follows at 7 p.m. over 3.1 miles, which leaves enough of a gap to run both if you want to.

Doubling up is the interesting option here: a hard mile is a genuine speed test, and running the 5K half an hour later on tired legs tells you something about your durability. If you would rather pick one, the mile suits anyone curious about how fast they can still run, while the 5K is the more familiar benchmark. Either way, warm up properly. A mile raced cold is an injury waiting to happen.