For loop routes you need to hit all the controls in order (or reverse order) and you need to have ridden at least the published distance of the route.
Beyond that, you can start from any location provided you return to that same location at the end of the ride. So this is OK for a 4 control perm:
Rider's Home -> C3 -> C4 -> C1 -> C2 -> Rider's home
In the above example, Control #1 is the start/finish as found on the published route. You can ride any route of your choosing between controls.
Jake
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