THE SYDNEY TRAIL MARATHON

On Sunday October 5th 2025, get ready for the Sydney Trail Marathon, presented by 180 Cadence.

The race takes place in Bidjigal Reserve, a rare island of natural beauty in the heart of Sydney. Alive with noise, colour, and movement, this rugged sanctuary is rich with hidden treasures waiting to be explored.

STM 42 is a double-lap course that takes runners beneath towering eucalypt canopies, where sunlight filters through the leaves, streams flow gently alongside the trails, and creeks sparkle in the morning light.

RACE DETAILS

DISTANCE: 42 KM

ELEVATION: +754 m / -754m

START TIME: 7:00 am

START LOCATION: Eric Mobbs Reserve

RACE DATE: Sunday, 5th of October 2025

The event was a brilliant day and well organised. There was just enough people for an electric feel, but not too many so the trails were crowded - Angela, 2024 Runner

PRICING

EARLY
$210 AUD

STANDARD
$220 AUD

FINAL SPOTS
$240 AUD

THE STM 42 IS LIMITED TO 200 RUNNERS

THE COURSE

WHAT YOU GET AT THE

SYDNEY TRAIL MARATHON

Premium Event Shirt

Free Race Photos

Finishers medal

Aid Stations

And everything else you expect from a world-class event.

MANDATORY GEAR

The Sydney Trail Marathon 42km course traverses trails where it might take some time for medical and support services to reach you, therefore it is essential that every athlete carry their mandatory gear at all times.

STM is also a cupless event. Athletes are required to carry their own drinking cup, bottle, flask or hydration vest which can be used at the aid stations.

MANDATORY GEAR LIST

  • Must be fully charged with a live SIM card capable of making calls and accessing the internet.

  • The bandage is required as you might need to use it treat sprains or potential snake bites. We recommend this snake bandage from Amazon.

  • This can be in the form of 2 × 500ml running flasks, a bladder or normal water bottles.

    Please note that STM is a cupless event.

FAQ

  • The 42km course takes runners through the stunning landscapes of Bidjigal, which are among the best trails in the world

    You can find a link to the course on Strava here.

    You can find a link to the course on Garmin here. 

  • You will pass an aid station five times in the STM 42. Aid stations can be found at the following KM marks: 9, 15, 21, 30, 36

  • All participants are required to carry the full list of mandatory gear from start to finish throughout the race. Random gear checks will be conducted before letting you into the starting corral. Failure to carry all mandatory gear during the race will result in disqualification

  • Runners will be able to park at Eric Mobbs Reserve which is next to the startline.

    Parking is free for the entirety of the event. There will be no need for additional shuttle buses or to purchase a parking pass

  • The race starts at 7:00am on Sunday the 5th of October 2025. The race will start at Eric Mobbs Reserve in Castle Hill, Sydney.

  • There is a 8 hour cut off to finish the STM 42. All runners must reach the finish by 3:00 pm in the afternoon.

    The pace you need to average to finish in 8 hours is 11:25 min/km 

    If you do not reach the Eric Mobbs Aid Station (21 km) by 11:00 am you will be given an STM 21 finish and now allowed to start the second lap.

  • There will be a bag drop available at the start and finish line

  • You will be able to collect your bib pre race and on race day morning. Details will be sent out closer to the event

  • The STM 42 is limited to 200 runners