BELIZE
BACKYARD ULTRA Registration updates

Belize Backyard Ultra

One loop.
Every hour.
How far?

15 May 2027 · Caves Branch, Belize

A simple format. An extraordinary test.
Keep showing up for one more loop.

Get registration updates Discover the format

Registration opens soon.

6.706 km / Every hour / Last runner standingBelize, Central America
Why Belize

The first backyard
ultra in Belize.

Most visitors to Belize see the beach. This race takes you into the jungle: limestone caves, river valleys and rainforest that most travellers only pass through on the way to somewhere else.

The loop runs through the grounds of Ian Anderson's Caves Branch Jungle Lodge, about an hour from Belize's international airport. Come for the race. Stay for the country.

The backyard format

Simple rules.
No easy finish.

Everyone starts together. Everyone runs the same loop. The challenge is to be ready when the next hour begins.

01 / THE LOOP6.706 KM

Complete your loop.

Cover 4.167 miles in under an hour. Any time left is yours to rest, refuel, and reset.

02 / THE CLOCK60 MINUTES

Start again. On the hour.

A new loop begins every hour. Miss the start or the cutoff, and your race is over.

03 / THE CHALLENGE1 MORE LOOP

Keep answering the bell.

The race continues until one runner remains and completes a final loop alone.

Stay and travel

Make it a trip,
not just a race.

Race packages at Caves Branch are coming soon: rooms, meals, airport transfers, and a camp for your crew right on the course. Add a day or two for cave tubing and jungle excursions before you run, or once you can walk again.

Crew, partners and families are welcome. Bring your people. They'll want to see this.

Get notified when packages open
The details

Know the
start line.

Crew welcome.

One crew member per runner, with a space at the start corral.

Standard backyard rules.

6.706 km every hour until one runner is left.