Oregonia, Ohio (United States of America) - "Arctic Dash". With a few new obstacles added to the old favorites, we have over 30 obstacles spread over a 4(ish)-mile course over the rugged Camp Kern terrain. You will be pushed to your limit. Swamps, mud crawls, climbs, carries, throws... we have it all. Are you Tough Enough? Mud, natural and man-made obstacles, rugged terrain and beautiful surroundings make this race unique; and don't forget whatever mother nature decides to throw at us! And as an added bonus, all funds raised go towards a great cause; our Annual Campaign to send kids in need to Camp next summer! The Family Wave allows you to tackle the course with your kids (age 7+)! https://www.campkern.org/events/arctic-dash-2025

Orlando, Florida (United States of America) - "OUC Orlando Half Marathon Weekend". Experience the excitement of the OUC Orlando Half Marathon Weekend! This two-day celebration of running unites the community for an unforgettable journey through Downtown Orlando. The Half Marathon and 5K routes wind through scenic streets, finishing at beautiful Lake Eola Park. Join over 4,000 runners for this cherished Orlando tradition, complete with live music along the course, local beer, and a lakeside party. http://go.evvnt.com/3123997-4?pid=6562

Houston, Texas (United States of America) - "Run for the House - Ronald McDonald House Charities Greater Houston 5K and Kids 1K". Join us to support Ronald McDonald House Charities Greater Houston! Founded in 1978, the mission of RMHC Greater Houston is to offer a home away from home, providing care, compassion, and hope to families with seriously ill children being treated in Texas Medical Center member institutions. The House provides a place to find rest and respite, activities, meals, and snacks for our families at no cost. 5K and Kids K – Run & Walk | December 6, 2025 | Sam Houston Park. This USATF-certified 5K run/walk/roll welcomes competitive runners, fun runners and walkers, families with children, and dogs. All registered participants will receive a finisher medal, event t-shirt, and other great swag generously donated by our sponsors. 100% of the proceeds benefit the children and families of RMHC Greater Houston. Up to $50,000 will be generously matched, dollar for dollar, by the Trafigura Foundation! www.runsignup.com/Race/TX/Houston/RunfortheHouse5K?aflt_token=Nktw0AUB3nF4FPeh7Y7AWqQewFdw9sGt

Needville, Texas (United States of America) - "Brazos Bend 100". Sponsored by Altra Running. Western States 100 Lottery Qualifier (sub 30 hour 100-mile) with 98 qualifiers in 2024! This is the December edition of our popular Brazos Bend races with the marquee event being the 100-mile. The Brazos Bend 100 is the largest trail race in Texas and one of the fastest trail races in the world on flat and smooth trails with incredible support from four aid stations per loop. The top 3 were under 16 hours in 2024. The course is 99.9% flat, and the only "hill" is a 10-foot rise over 0.1 of a mile. The rest of the ~16.7mi loop is flat surfaces that move from hard crushed rock, soft hiking trails under tree canopy, and smooth horse trails. Most runners get away with a road shoe. Conditions in December can have a mix of anything but are typically great for running. Brazos Bend is a spectacular State Park located just South of Houston/Sugar Land and is most known for its abundance of birds and American Alligators among other wildlife. The gators are a part of our race; there has never been an incident in the parks 50 year history. Enjoy them on your run, from a distance, and you may get some unique race photos! Complete the 50K or 50M in April 2025, AND the 100K or 100M in December 2025 to earn the Brazos Bend Challenge Coin. www.trailracingovertexas.com/brazos-100

Furnace Creek, California (United States of America) - "Death Valley Trail Marathon & Half Marathon". Our run is on a spectacular course on the Westside Road (dirt) in the heart of the Badwater Basin. The NPS has permitted us to run on the northern end of the road to facilitate our marathon, half marathon, & 10K. The half marathon will be a single out and back. The marathon will do this route twice. The turnaround point is within a few miles of the lowest point (-282 feet) in North America in the Badwater Basin and in the shadow of Telescope Peak (11,043 feet). This course will be one of the most stunning and beautiful runs that you will ever experience and is surrounded by the vast wilderness of Death Valley. The run starts and finishes at, essentially, sea level elevation. The lowest point on the course is -265 feet. When you start the run, you will be facing Telescope Peak in the Panamint range and, when you return to the finish, you will be facing the magnificent Artist’s Palette. https://raceroster.com/events/2025/99691/2025-death-valley-trail-marathon-half-marathon-and-10k