Check out Cardinal's "Benchmark Century Challenge" GC2Z91M, "Multicache Century Challenge" GC39736 and "Mystery Cache Century Challenge" GC2H46X.
Yes Gingerrose has several and the goffamily has some too. Coon&Bud
I have seen lots of power trails popping up around Arkansas. Thanks to Fab5WillisClan for a mini trail on hwy 107, 30 cache from Vilonia to Jacksonville. Add to that the group of caches on Hwy 64 Vilonia bypass and the ones I am adding in between Hwy 107 and Hwy 5. We had a great fun day running the Arkansas River Road caches from Dumas to the State Line. Murfersboro has a couple of power trails. Geoff family putting one in Little rock. Lots of good places to get a 100 plus in a day