This one is relatively mild as trail races around here go: 1,873' total gain.
I did the 25K in 2018 (two laps), so I'm familiar with the course. I would most likely walk the uphill in the 5th mile on all four laps. But still...
I haven't registered yet. I'll wait to see how my 3.5- and 4-hour training runs go over the next 4-5 weeks ("do I really
want to do this?!"). :-)