Cactus 100 Ultra

10/12/2025

We’re back in 2026!

Stay tuned for further information and registrations to open!

07/01/2025

If you're in Birdsville for Cactus be sure to join in on some of the other festivities too 🥳

04/12/2024

Don't forget to register! Entries are limited to 25 for both the 100 and one hit wonder. The fun awaits with lots of activities during the Summer of Sun weekend in Birdsville. See you there!

CACTUS 100 ULTRA Birdsville QLD, Australia - BIRDSVILLE, AUSTRALIA6PM SATURDAY 11TH JANUARY, 20256.7k… - January 11, 2025

11/11/2024

🌵🌵 "It's like a backyard, but different" 🌵🌵

Registrations are now open for the 2025 Cactus 100 Ultra!

Want to battle your way towards 100k and see how many 6.7km laps you can do on the hour every hour?

Or does a One Hit Wonder sound better covering 6.7km for a burger and Tee?

January 11-12th, 2025

CACTUS 100 ULTRA Birdsville QLD, Australia - BIRDSVILLE, AUSTRALIA6PM SATURDAY 11TH JANUARY, 20256.7k… - January 11, 2025

09/10/2024

08/10/2024

Registrations will open towards the end of October 💚

18/08/2023

😍😍Oh how we love our billabong in Summer! 😍😍

The perfect turn around point in the 6.7km loop at the inaugural Cactus 100 Frontyard Ultra.

Join us in Birdsville on January 13-14th 2024 and run under the desert night sky, in the heat of the Australian desert summer.

We'll give you one less minute to finish each 6.7km lap and if more than one person makes it to 15 laps, it's down to a sprint finish and then we're all going to the Birdsville Hotel! 🍺🍻🥂

We're ready for a Summer of Sun and hope to see you take on this beast of an adventure!

The link to register is in the comments, so tag your mates and put this outback ultra on your radar!