100km, 50km and Relay Marathon Event

CRU100 Collie Ultra 100km Marathon Event
Collie
7 Sept 24
After last year’s success, the Collie River Ultra (CRU) Marathon is back with epic trail running adventures for everyone.
The charming country town of Collie in Western Australia has had $10 million invested in creating a network of stunning adventure trails for all to enjoy. This is the perfect opportunity to run through Australian bushland with full service race support.

Already know you’re up for the challenge?

Click on your event below to lock in your spot.

Thanks to recent investment, Collie is one of Australia’s premier trail and adventure destinations. The trails wind through stunning jarrah, marri and yarri forests, across bridges, over logs, along fence lines, across granite outcrops and along water’s edge taking in sweeping views of the Collie River Valley and wide expanses of water including the spectacular Wellington Dam.

These are the best running trails we’ve found, and we’re inviting you to see for yourself! Even better, it’s at a time of year when the bush is lush green and alive with colour from wildflowers.

Perth Trail Series is an event organisation dedicated to making trail running accessible, safe and rewarding to as many people as possible. With an army of awesome volunteers, the team puts on an amazing 90 trail events every year including weekend club runs and ultra marathon events.

All events are delivered with Perth Trail Series famous, fun, supportive community vibe and all offer a scenic rewarding trail running experience. Expect nothing less from one of Australia’s most experienced trail running event organisers.

The CRU100 event is run close to town and is supported by our network of trail support crew across the whole course. While you’re exploring the trails, it’s nice to know help is never far away. This is a ‘full service’ event with all the customer service considerations you’d expect from an industry leader: busses to the start for CRU50 runners, well stocked checkpoints, a marked and marshalled course, and stop off points for spectators and support crews that allow them to take in the best of the landscape as well.

There’s an event for everyone with 100km SOLO, 50km SOLO and the relay team event where you can hit the trails with 2-5 runners to complete the course. For more details about each event, click on your preferred event category below.

The 100km course starts and finishes in the town of Collie and takes in the Wiilman Bilya Trail! Take off on the main road in town before making your way on to the sexy single trail! You’ll run along the stunning dam, over the dam wall, through beautiful bush! It’s all runnable, making it perfect if it’s your first 100km!

The 100km and Relay start at the same point. Halfway through the Final Leg, the 100km runners split off onto a different trail to collect a few more kms, before rejoining the Final Relay Leg to continue with the rest of the runners to the rewarding finish!

Utilising large sections of the Brand New ‘Wiilman Bilya Trail’

Relay Total: 81.3km +/-1623
CRU50: 55.3km +/- 1,051m
CRU100: 101.3km +/- 2000m

If you fall behind these last expected runner times, at 73.7km you’ll be directed to stay on the final relay Leg and finish your race at 81.3km.

CRU100 HARD CUT OFF: 73.7km
*If you’re not here by 7pm, you’ll be directed to stay on final Leg and finish your race at 81.3km. This is based on consistently maintaining a 10:30min/km pace.

FINISH RELAY: 81.3km ; Last Runner Expected at: 9:13pm
FINISH CRU50: 55.3km ; Last Runner Expected at: 8:06pm
FINISH CRU100: 101.3km ; Last Runner Expected at: 11:43pm

The 100km course starts and finishes in the town of Collie and takes in the Wiilman Bilya Trail! Take off on the main road in town before making your way on to the sexy single trail! You’ll run along the stunning dam, over the dam wall, through beautiful bush! It’s all runnable, making it perfect if it’s your first 100km!

The 100km and Relay start at the same point. Halfway through the Final Leg, the 100km runners split off onto a different trail to collect a few more kms, before rejoining the Final Relay Leg to continue with the rest of the runners to the rewarding finish!

Utilising large sections of the Brand New ‘Wiilman Bilya Trail’

CRU50: 50km +/- 1,051m

If you fall behind these last expected runner times, at 73.7km you’ll be directed to stay on the final relay Leg and finish your race at 81.3km.

CRU100 HARD CUT OFF: 73.7km
*If you’re not here by 7pm, you’ll be directed to stay on final Leg and finish your race at 81.3km. This is based on consistently maintaining a 10:30min/km pace.

FINISH RELAY: 81.3km ; Last Runner Expected at: 9:13pm
FINISH CRU50: 55.3km ; Last Runner Expected at: 8:06pm
FINISH CRU100: 101.3km ; Last Runner Expected at: 11:43pm

The 100km course starts and finishes in the town of Collie and takes in the Wiilman Bilya Trail! Take off on the main road in town before making your way on to the sexy single trail! You’ll run along the stunning dam, over the dam wall, through beautiful bush! It’s all runnable, making it perfect if it’s your first 100km!

The 100km and Relay start at the same point. Halfway through the Final Leg, the 100km runners split off onto a different trail to collect a few more kms, before rejoining the Final Relay Leg to continue with the rest of the runners to the rewarding finish!

Utilising large sections of the Brand New ‘Wiilman Bilya Trail’

Relay Total: 81.3km +/-1623
CRU50: 55.3km +/- 1,051m
CRU100: 101.3km +/- 2000m

If you fall behind these last expected runner times, at 73.7km you’ll be directed to stay on the final relay Leg and finish your race at 81.3km.

CRU100 HARD CUT OFF: 73.7km
*If you’re not here by 7pm, you’ll be directed to stay on final Leg and finish your race at 81.3km. This is based on consistently maintaining a 10:30min/km pace.

FINISH RELAY: 81.3km ; Last Runner Expected at: 9:13pm
FINISH CRU50: 55.3km ; Last Runner Expected at: 8:06pm
FINISH CRU100: 101.3km ; Last Runner Expected at: 11:43pm

Entries for this year’s CRU100 are now open. Register early to make sure you get a spot. Sign up for the Solo100km / Solo 50km / Relay 80km of up to 5! By selecting your event below.

We acknowledge the traditional custodians throughout Western Australia and their continuing connection to the lands and trails on which we run. We pay our respects to ancestors and Elders, past – present – emerging.

At Perth Trail Series we respect our environment. On the trails we acknowledge the continuing connection and we’re committed to honouring Australian Aboriginal and Torres Strait Islander peoples’ unique cultural and spiritual relationships to the land, waters and community.

Keep in touch with early entry call outs for all of our trail series events. With spots selling out in some events, it pays to run ahead of the pack and register early.