Bank of America Chicago Marathon
Chicago, USA · Oct 11 · Main quest length: 1 day
Flat, fast, and famous for it — Chicago is the marathon major runners chase for a PR, and the lottery-entry system means half the field at the expo is trading "did you get in?" stories with total strangers before the race even starts. That shared entry-anxiety is its own kind of icebreaker, and it makes solo attendance here feel less like showing up alone and more like joining a cohort that already has something in common.
The course loops through 29 neighborhoods, so the crowd support changes character block by block — Boystown's party atmosphere, Chinatown's drumming, the quiet grind through the industrial stretches where you're mostly running on your own effort. A huge running-club scene has grown up around the race, with pasta dinners, shakeout runs, and expo meetups that a solo traveler can plug into as much or as little as they want.
Lodging and flights land Chicago in similar overall cost territory to New York, but typically a notch cheaper — a genuinely accessible major marathon for a solo bucket-list trip.