Marker elves (of a more northern breed?) have been around here too. There´s a 68 KM mtb race here on Sunday - luckily I won´t be able to take part since we´re escaping to the northern mountains to visit our son in Riksgränsen.
It's probably lucky for me that I have refrained from the Enduro. If I can't stay upright on a road bike on a paved bike trail, what possible chance would I have against 111 kms of trails and loose gravel double track on a mountain bike? I would be a med evac for sure.
We´re both lucky then :-)
How much of the Laramie Enduro is on orienteering maps?
A lot of it. I'll have to go with a SWAG offhand, and say more than 75%.
How much of it is on basemap that you have on hand?
Almost all of it. I'd have to look at the course map to be sure, but it's probably in the area of about 2-3 kms that aren't covered.