2026 Southwest Series - Day 2 (CO)

World's Best Running Series! No Time Limits Great Food Award-Winning Medals Loony Running Family! We RUN this country, TOGETHER!Event details and scheduleThanks for running with Mainly Marathons!  Take a look at our website for additional details about this series and our other series of races.   Also, join our Facebook group to stay up-to-date with our loony adventures: Main Group and Southwest Series. If you're interested in some Mainly Merch, check out our online store HERE. We'll offer some items (hats, stickers, magnets, mugs, etc.) in-person at the races, the Mainly Merch store best option for a variety of fun designs and quality merchandise to showcase your loonacy!   If you have any questions, email MB@MainlyMarathons.com We RUN this country, TOGETHER!