Welcome to the world’s best multi-day, multi-state Running Series!
Mainly Marathons has over 70 events across 13 series taking place in all 50 states!
Mainly Marathons 2023 Calendar
The 2023 Mainly Marathons Calendar is available with 75 races covering all 50 States, including 3 Running Ragged combined series! The 2023 schedule is very similar to the 2022 schedule with one small change (2023 Alaska Series will be adjusted one week earlier, July 25-28).
Online registration via Active.com is open for all 2023 races. Mail-in registration is available for all races (and it avoids Active.com service fees).
Best wishes to you all – Stay Safe, Stay Healthy, and Cheers to Staying Active!
The Mainly Marathons crew
Updated: November 17, 2022
Buy a Race and Get One Free!
Register for one race and get your next race of equal (or lesser) value FREE! One free race per customer who has not already had a free race. Free race must be used in the same series of a paid race. Before registering, email MB@MainlyMarathons.com for details.
Are YOU a Loonatic?
If you participate in Mainly Marathons events, you are, and we want to reward your efforts!
We give awards for completing half marathons or longer at 25, 50, 100, 200, 300, 400, and 500 races with Mainly Marathons! All awards will be updated June 2018 to custom-made plasma cut sculptures (includes custom metal-stamped nameplate)! In order to be added to the Loonatic List, please submit your list of completed Mainly Marathons’ races (half marathon or longer) totaling 25 or more. We’ll keep track of your Mainly Marathon race total thereafter.
Questions or corrections, please email MB@MainlyMarathons.com.
And click HERE to view our top Loonatics!
Still on the fence? Our amazing and LOONY running community is comprised of the kindest, most supportive, and toughest runners in the world. They make Mainly Marathons events so much fun. Check out these testimonials to hear why so many runners return to Mainly Marathons over and over again!
Thousands of happy runners agree, Mainly Marathons is simply the best marathon series on the planet!
Have you ever wanted to see how far you can push yourself, how many races in a row you can run?!
Join us for one of our Running Ragged events. Our Running Ragged events are a combination of two or three of our series without a break. That means you can do 11+ races (or more) in as many days! Each year, we’ll have one to three Running Ragged events. Completing all days of a Running Ragged events earns you bonus bling, such as epic belt buckles!
Congratulations to the Running Ragged Triple Crown awardees (completed all 3 Running Ragged events in 2022):
Liz Gmerek, Bettie Wailes, Deneen Keaton, Cherrine Wheeler, Robbie Mamalygo, James Alexander, Tedford White, Michael Hall, Jim Simpson, Mark Hirsh, Jerry Rick, and Tim Mahler.
If running with us isn’t loony enough, we have a “Double Down” option to run two races in one day and to earn even more medals!
After the completion of your race, you may run another. BUT the second race will be limited to a 5K or 10K.
AND you may purchase your second race at HALF-PRICE. You may purchase this second race in advance or on race day.
BUT you must be able to complete both races within the 50K time limit and the longer race must be run first.
For those of you thinking “This is MADNESS, why would anyone want to do two?” The answer is, “Yes, this is a tad beyond normal, but our runners are asking for this option.. For example, they are doing a 5K after their marathon, 10K after a half.”
Contact MB@MainlyMarathons.com with any questions.
You’ve seen them on the course. They rarely win, but you always see them out there running, and running and running. And sometimes walking.
These events were inspired by and designed for them, and for those who just want to run long and run often.
Whether you want to participate in one marathon, half-marathon, or 5K, pick up a couple of new states in your quest to finish all 50, or you want to take the ultimate challenge and run every race in a series, we encourage you to join us. Walkers are just as welcome as runners: none of our races have a time limit, and you never need to worry about whether you’ll make it before the course support has packed up and gone home. (In fact, we have become famous for celebrating last place in every race with the now-coveted caboose!)
Mainly Marathons puts on a race series like no other, from the unique course setup to the unparalleled spread of food and drinks to fuel you on your journey, all mixed with a sense of fun and family you just won’t find anywhere else.
Peace and Toudaloo!
Jesse and Daniel Rueckert
We encourage inclusivity and strive to promote a supportive experience for ALL participants!