Colorado River Run: 100-Mile & 50-Mile Ultra, 50K, Marathon, Half-Marathon, 10K and 5K Taco Trot

Fri November 28 - Sat November 29 2025

Colorado River Run: 100-Mile & 50-Mile Ultra, 50K, Marathon, Half-Marathon, 10K and 5K Taco Trot

Fri November 28 - Sat November 29, 2025 Marble Falls, TX 78654 US Directions

C²=R U N

Join Group/Team

	<script type="text/javascript" src="https://runsignup.com/js/widget2.js?page=race-group&amp;raceId=164584&amp;raceGroupId=1846460"></script><br/>

	<noscript><p>Sorry, you must enable javascript to view this content from <a href="https://runsignup.com/">https://runsignup.com/</a>.</p></noscript>

View Roster

Enter the name and email address of the members you’d like to invite. Please note that you can only invite up to invites from a RunSignup email address, but you can still email the registration link through your personal email.

How Do You Want to Send These Emails Send from a RunSignup email address.

With this option, we will send an email from noreply@runsignup.com to the members you invite.

Send from my personal email address.

With this option, we will generate a template email you can copy and send through your own email address and mail client.

Email Subject Line

Enter Your Personal Message

Email	First Name	Last Name
Email	First Name	Last Name

Group Members

Group/Team Members Hidden

If you continue to use this site, you consent to use all cookies. We use cookies to offer you a better browsing experience. Read how we use cookies and how you can control them by visiting our Privacy Policy.

If you continue to use this site, you consent to use all cookies.