01.17.2021 | AUSTIN, TEXAS 2020 Results Register Now
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Welcome to the 3M Half Marathon!

Join more than 7,500 fellow runners in Austin, Texas, to run a personal best at the 3M Half Marathon. 3M Half is a fun and fast stand-alone half marathon boasting one of the fastest 13.1-mile courses in the country. You’ll enjoy a point-to-point course with mostly downhill running, run past some of Austin’s finest locations, and finish downtown near the Texas State Capitol. Cross the finish line, grab your hefty one-of-a-kind “spinner” finisher medal, and celebrate at the energetic finish line festival, complete with a beer garden!

Check out the other pages of our website for everything from course maps to spectator information. Having trouble finding what you are looking for? Click one of the four icons in the upper righthand corner to ask us on social media or send us an email.

We look forward to seeing you at Downhill to Downtown on 01.17.2021!

2021 Online Registration

The Latest From Our Blog

Image of a runner pushing a stroller in front of the Tau Ceti mural in Austin, Texas. The text in the design reads How to Run with a Stroller and leads to a blog with helpful advice.
Parents provide insight on how to run with a stroller Half marathon training has begun for many runners! Maybe you just signed up for your first half marathon. Perhaps you’ve returned to running after taking some time off. “But what about…
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The 2020 August running playlist is the anthem you need to chase your 13.1-mile PR We’ve got more tunes for you because Austin is The Live Music Capital of the World. We’re sharing our favorite tunes with you every month so you can train…
Armadillo 5K announcement coincides with 3M Half Marathon’s July 30th price increase Earlier this month, 3M Half Marathon presented by Under Armour and Ascension Seton Austin Marathon presented by Under Armour created the Run Austin Virtual…
Image of male runner stretching on a track before a workout. Text to his right reads 5 Simple Training Mistakes You Need to Avoid.
Avoid these simple training mistakes and keep things running smoothly Training for a half marathon is not an easy task, especially if you’ve never run the distance before. But you can do this and we’re here to help! For first-timers and…

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Don’t take our word for it, here is what our participants say

I had a great time and shaved over 10 minutes of my PB! Thanks 3M Half Marathon!!

B. Williams

There really is a “runners high!” And today’s 3M Half Marathon has me smiling from ear to ear! Austin is such a great running city!

C. Windler

Had an incredible morning thanks to 3m half marathon and smashed my previous PR by over 12mins! Not mad at it 😀 #runnerbliss

S. Conger

Big thanks to all the volunteers. And all the ATX folks out there to cheer us on. Always a 1st class event and so much fun!

D. Rawlings

The 3M Half is a fantastic event. The shirts and swag are awesome, the medals are impressive, and the post-event venue can’t be beat.

A. Wadey

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