A couple potential additions, all by Mount Valhalla:
Point Odin 39.6644, -106.2174, 4th class easiest
Freya Tower 39.6658, -106.2066, 4th class
Thor Tower 39.6646, -106.2096, 5.4
Loki Tower 39.6610, -106.2141, 3rd class
Lightning Tower is out there too but not sure which. I believe Stan Wagon has some decent beta on which spires are which, as does Kramarsic, of course.