Check out www.smoc-runs.com
that’s the local O club that puts on meets in the fall / spring. Also the permanent courses in the area as mentioned.
www.Lostarrowsports.com is another we have a beginner 4HR AR coming up 5/4 and also the 2-4-6 race on 9/29.
www.MetroNav.org has Nitrogaine in June
www.MIadventureracing.com has a race coming up in June at Silver Lake and others as well.
Hope to see you out there!