
From the Organizer
Rock The Doc 5K/1K is more than just a run, but also a celebration of service, community and legacy. This event honors the life of Dr. Robert J. Dennington, Little Elm’s first Orthodontist, esteemed community leader and longtime resident. Dr. Dennington, affectionately known as “Doc,” was deeply committed to serving Little Elm, the town he loved so much, before his passing from lymphoma in 2008. This race celebrates our beloved local leader’s life, service and the lasting impact he made in the community.
Rock the Doc is all about bringing our community together for a great cause, while continuing to build the energy and culture that makes NTX RR so special! Whether you're walking, running, cheering or just enjoying the lively atmosphere, it's a great way to start your Saturday surrounded by family, friends and runners/walkers of all ages! Register today and don't miss out on the fun!
Distances & Pricing
Race Location
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
Running through the Decades Half Marathon - San Antonio
Armstrong County Rim-to-Rim 15K Challenge
Liberty 5K & Fun Run
Ninja 5K & 10K at Temple, TX (31)
Frequently Asked Questions (FAQs)
Rock The Doc 5K & 1K Fun Run Presented by NTX RR Run Club
Jun 27, 2026