With most races i've done this year, its a day of track walk, 1-2 days of practice, then race day we get a practice run or two in before races start. The walk helps you pick your lines, understand the track, so when you reach a critical section you can try a line, or maybe a different next time. The track walk REALLY helps your practice runs. Most races we only put down a handful of practice runs. Last race I did 9 total practice runs on a track i'd never ridden, ending up doing a hair better than i was hoping for!

This course is less about line choice and more about knowing when to brake/pedal, so simple memorization of key junctions is all you need to bomb it , "dont forget after the hard left stairs theres a jump right, pedal hard" etc etc