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Mountain bike riding

Eager Beaver Weekend:
Cannondale XCM 1

Saturday, August 26, 2023 - Mansfield Outdoor Centre

The Eager Beaver is back with more punch and more fun. Gravel Race, XCMarathon Race, and Stage Race. Plus, beer, camping, and live music... All in one unforgettable weekend!


August 26-27, join us for a celebration of riding bikes sans pavement!


Saturday, August 26, the first race of the Cannondale XCMarathon series.


It's a classic rip through the trails of Dufferin Forest and MOC, featuring some old trails and a lot of new. Check out the results of some ambitious build projects!

A great day of hammering the mountain bike-specific trails.

Choose from 3 distances:

  • Full Marathon ~60k

  • Half Marathon ~30k

  • Sprint ~15k

2023 course map EB XCM.png
Fat bike riding


Friday evening
Mansfield Outdoor Centre

Set up your tent at Mansfield Outdoor Centre and get a good night's sleep!

Reserve your campsite or cabin by email at

Mansfield Outdoor Centre


Registration is open for EB XCMarathon


Sprint starts


Marathon starts


Half Marathon starts


Podium for Half Marathon


Podium for Marathon


Live music



Mansfield Ski Club


Registration is open for EB Gravel


100k starts


40k starts


BBQ at Mansfield Ski Club


Podium starts

Post-Race/Ride Weekend Activities

​Stay the weekend with us!

  • Live music on Saturday night

  • Swim in the creek

  • Camp at Mansfield Outdoor Centre 

Registration Information

The first 100 entries will get a cool hat included with registration!


Registration Wave 1: First 50riders.

Includes a cool new T-Shirt!

Full : $70   Half : $60   Sprint : $45


Registration Wave 2: 100 riders.

(You can still buy a cool T-Shirt)

Full : $70   Half : $60   Sprint : $45


Registration Wave 3: Next 150 riders.

(You can still buy the cool T-Shirt)

Full : $80   Half : $70   Sprint : $55

What do you get?

  • Skratch Lab Nutrition on course

  • Professional first aid by Odyssey Medical

  • "Over-marked" course so you can enjoy the day without worrying about getting lost

  • Inclusive and encouraging vibe

  • GPS track to follow so you are super confident

  • Wicked draw prizes!

  • Aid station on course

  • Team Colin DJ/announcer services



There will be lots of signs on course. Our arrows are orange UCI-shaped arrows on a white background. We also have an X for when you miss a turn.


These are used at our discretion and are not at every turn, so keep your head up, or use your GPS.

First Aid

Odyssey Medical will be on site to take care of any first aid issues. If you or a rider near you is injured during the race call Odyssey Medical (on number plate) or report to one of the Aid Stations.

What bike can I ride?

Any mountain bike that is trail worthy and safe!


We've even had some people have a great day riding a gravel bike or fat bike. (Just keep in mind that with a gravel bike, you may feel the bumps at bit more.)

Substance Projects' Weather Guarantee

Weather is always challenging and can completely change a race. So we developed the Substance Projects 100% Weather Guarantee: We guarantee that 100% of the course will have weather.


If any section doesn’t have weather we will refund you that percentage of your entry fee upon proof there was no weather.

Whining Policy

We have a strict "No Whining" policy. If it was all easy and downhill then it wouldn’t feel like you accomplished anything!

Inclusive Race

These are races for everyone! In the spirit of equity and inclusion we celebrate difference and especially encourage those who have historically been excluded from sport.


See our Inclusion Statement on our About Us page.

Cancellation / Refunds

For 2023 there will be NO REFUNDS for those who can’t make it on race day or for cancellation of the event for any reason.


If the event cannot proceed, registrants will have their entry carried over to the re-scheduled date or have credit for another Substance Projects Event.

Registration Form

XCMarathon + Gravel

Want to do the XCMarathon + Gravel? 


Want to do just the XCMarathon? Use this form below.

Half Marathon
Full Marathon
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