It's all going to be open, as it's a cat A race, so no singletrack as per the last few races at Hog Hill. One of the climbs will be on the road, the other will probably be interrupted with steps so at the best some of it will be running. I'll be running 39x19.
Here's my last three races at Hog Hill;
https://www.strava.com/activities/396399360
https://www.strava.com/activities/231511095
https://www.strava.com/activities/203662442
By the looks of it, Sunday's course is similar to the one from September this year, so two climbs a lap.