The Duckmeister
Has a juicy midrange
Sounds rather like the old Wombat 50/100km - huge sectors of gravel/fire access road with a few bits of singletrack in between. I never tracked the mix, but they'd have been pushing 50% grovel roads. Kind of why I subconsciously preferred the time-based Endurance (true origin of "enduro" format; although the overall ride time was similar (3-hr/50km, 6-hr/100km), the shorter lap format usually had a considerably higher singletrack proportion, with only one or two short grovel sections to grab a feed & drink on each time around,