Cardboard Classic Virtual Course Tour
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The race starts near the Twin Chimneys race registration site.
The first real decision on the course comes at 1.2km. Since you are on the trail near the lake you turn right.
No decisions to be made here at about 1.4km. It's just a pretty part of the course.
Just past the 1.8km mark you will turn left onto Rockridge Trail. This turn is more than 90 degrees but it is fairly gentle and you are starting up the hill so it's not too bad. After making the initial turn you should stay on the main dirt trail, not the more grassy one to the left, and go up the steepest part of the hill(what did you expect!)
After going up the first hill you will come down a hill and cross big trail that actually looks more like a road. Go straight.
Just after crossing the big trail you will be faced with the second big uphill on the course. At the top of this hill turn left.
At just past the 3km mark comes the turn most likely to screw you up. Just past the Nature Center building the Spring Lake Trail joins the Rockridge Trail from the left. You want to stay on Rockridge by turning right.
Just before crossing the road you will rejoin the trail close to the lake. As you come down a hill on the grassy trail and see the lake ahead of you, turn left.
Another pretty part of the course on the trail close to the lake.