Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA returns to Aurora, Colorado on December 12th this year. This annual event has been a cornerstone of the local running community since its inception in 2014, growing each year as more participants join and support those affected by breast cancer.
Race morning begins under the clear skies typical for early winter in Denver, with temperatures ranging from -1.4°C to 10.6°C. The air feels crisp, making for a refreshing start to your run. Participants gather at Marston Park, nestled between downtown Aurora's modern skyline and the historic neighborhoods that surround it. The park itself is beautifully maintained, offering a serene setting where runners can focus on their pace while surrounded by nature.
Run for Breast Cancer has been running strong since 2014, with over 500 participants each year. This race not only raises funds but also fosters community spirit and awareness about breast cancer prevention and support services. Every step you take contributes to a future where no one faces this battle alone.
The course loops through Marston Park, providing a mix of paved paths and gentle terrain that caters to all runners, from seasoned athletes to casual walkers who are new to the sport. The race starts at 7:30 am sharp with multiple waves starting every ten minutes to accommodate various paces. There are no timing chips; instead, participants can track their times on apps like Strava or RunKeeper and submit them if they choose.
The weather conditions on that December morning will be mild but brisk, with an average wind speed of 10.5 km/h and a humidity level around 48.7%. Temperatures range from -1.4°C to 10.6°C, making the race feel comfortably cool despite the lower end temperatures.
The event offers distances for all levels: the 5K (five-kilometer race), the 10K (ten-kilometer run), and a family-friendly 1-mile fun run, with registration fees of $41.21 for both the 5K and 10K. For those who prefer to do their runs from afar, there’s also a virtual option available at the same fee.
Registration is quick; if waves sell out before you sign up, consider joining as a virtual runner or opting into our waitlist. For on-site support and swag pickup, participants can access free materials including running t-shirts (shipped to your address), finisher's towels, medals, digital training packs, online results, certificates of completion, and invitations to local run clubs.
Packet pickup is hassle-free—your shirt will be shipped directly to you in the week leading up to the event. For last-minute registrations, sign up by November 29th, as race shirts take time to arrive post-ship date. Wave times can be requested via email at [email protected].
The full Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA event on December 12, 2026, in Aurora, Colorado, offers a unique opportunity to unite and support an important cause while enjoying the crisp fall air of Denver. This race is worth attending because it brings together the local community for a meaningful day filled with inspiration and hope.

5K Registration | 10km Registration | Family 1 Mile Fun Run | Half-Marathon 13.1 Registration | Virtual Run Registration