Onesie Run

Experience the one-of-a-kind Onesie Run as it returns to Calgary, Alberta on November 14, 2026. This unique race offers runners of all levels an opportunity to participate in a truly memorable event. The morning temperatures will range from -5.8°C to 2.7°C with an average of -1.6°C, creating the perfect chilly yet comfortable conditions for those dressed in their cozy onesies.
The park setting provides a picturesque backdrop, ideal for both adults and children alike. With firm, slightly soft terrain that feels like walking on a plush carpet due to its cushioning nature, runners will enjoy gentle slopes offering scenic views as they navigate through the course. The 1km and 5km routes are specifically designed for adult participants, while there are options tailored for youth under 18 years old.
Since its inception in 2024, this event has been supporting local animal welfare by raising funds and awareness for the Calgary Humane Society. More than just a race, it brings joy to runners of all ages, often accompanied by their furry friends who add an extra layer of warmth on chilly mornings.
The course layout includes notable features such as gentle slopes that provide scenic views, ensuring participants have a memorable experience regardless of the distance chosen. The start and finish are clearly marked with signage for those running longer distances, although there are no designated aid stations along the way. Runners can expect firm footing throughout their journey.
Race morning will see attendees feeling comfortable at -5°C despite slightly humid air conditions (69.6%). With steady winds around 10 km/h and a low UV index of 1.4 (low), wearing layers is recommended to manage temperature fluctuations effectively.
Registration for the event can be completed online through https://raceroster.com/events/2026/115415/onesie-run, with fees set at CA$27.38 per adult and CA$21.03 for youth and children under 18 years old.
Bibs are available for pickup from Monday, November 6th to Friday, November 11th at Calgary's City Hall. Runners should bring their valid ID and proof of payment along with any specific items as mentioned by organizers during registration.
The Onesie Run kicks off in downtown Calgary near the intersection of 5 Ave SW & 7 St NW, just steps away from Stampede Park. With relaxed age requirements allowing anyone over 18 to join, it’s a fantastic first-time race for newcomers and an exciting event for seasoned runners alike. Ensure you have your onesie ready and any other items needed as per instructions upon arrival.
This event is not only about having fun in an unusual costume; it's also about supporting local animal welfare initiatives. The community comes together to celebrate this unique tradition, making the Onesie Run a must-attend for those who love animals or simply enjoy running in onesies.