Those Guys Events is a family-owned event management company, specialising in producing high quality trail running events.

The Guzzler Ultra is our headline event, welcoming runners from across Queensland, inter-state and internationally on 19th - 20th July 2025 to enjoy Brisbane’s beautiful trails.

The Guzzler Ultra hosts four trail running races over the event weekend:

• The Guzler Ultra 100km
• The Glass Half Full 50km
• The Big Sipper 21km, and
• The Dry Run 10km

These events are based at Mt. Coot-tha and our courses take runners through state forest and national park to visit Brisbane’s historic reservoirs along the way. Find out more about our courses here.

As trail runners, we love our natural environment and believe that it is a space worth protecting, to ensure it is there for many future generations to enjoy.

One way we aim to take responsibility is by being a 1% For The Planet Business Member.

What is 1% for the Planet?
1% for the Planet is a global movement inspiring businesses and individuals to support environmental solutions through annual memberships and everyday actions.

As a 1% For The Planet Business Member, we (Those Guys Events, organisers of The Guzzler Ultra) commits to donate the equivalent of 1% of our gross sales to approved environmental non-profit organisations, every year. This is before costs and regardless of profit.

Through 1% For The Planet we have donated over $8,000 to our certified and nominated partners Bush Heritage Australia and Australian Conservation Foundation so far.

Those Guys Events works with all of the land stakeholders to ensure have permitted access to the trails we run our events on and we commit to responsible use of the trails.

We take pride in creating well-marked events, ensuring that our runners safety remains our first priority. During The Guzzler Ultra 100km, runners can be on-course for up to 28 hours, so clear directional marking is imperitive for tired athletes.

You may notice event markings in the form of:

• Neon pink and yellow reflective flagging tape,
• Directional arrows and no-entry signage bearing ‘The Guzzler’ logo,
• as well as event branded banners

on the trails during the build up and days following the event. Where possible, these are fstened with pegs or removable zip-ties to ensure no permanent damage occurs.

All of our event course marking is reusable, and we endeavour to collect every single piece we put out every time we use it.

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No course marking is deliberately abandoned on the trails. If you think you have found some of our event course marking or signage that we need to collect, or that has been sabotaged, please email us with details on marking@thetrail.co.

Fore-runners check our courses prior to the event start and sweepers follow at the tail end of the event to ensure marking is removed in a timely fashion. Due to the distance of our 100km event, some marking will be collected in the days following the event weekend.

It takes a village to organise and support The Guzzler Ultra event so that our runners can have a safe and enjoyable day on the trails.

We’re very grateful to not only have the support of an amazing bunch of individuals, but also the help of awesome local running clubs and community groups in the build up to, during and after the event.

If you see these guys on course and would like to discuss what they’re up to, please contact us at marking@thetrail.co

Or if you are inspired to get involved in volunteering for a role at the event, head here to volunteer.