We started our 4th celebration a day early at one of High Plains' open lapping Friday sessions. $100 for an afternoon (~80 min of track time) is a helluva value. This was my first time at this track (I unfortunately missed the CO XPO a few years ago). It was trickier to learn than many tracks I've been to on account of several blind crests and/or apexes. However once I got it mostly figured out it is a fun track.
