There's an irrigation ditch part way on the trail, which has a dirt road alongside it. I took this for a short out and back.
I startled a large owl from the trees, and it flew away into the adjacent field. I'd seen a pale grey egg on the ground; I wonder if it was from its nest, or from a nest it had raided?
After mile three, I don't think I stopped again, and kept a fairly steady pace. According to Strava I ran a 56:00 10k during this run, which isn't bad for me. My PR in a race is 49 minutes and change.
Distance was 9.23 miles, time 1:37 (moving 1:30), elevation gain/loss 257 feet, avg. pace 10:35 (moving 9:45), and best pace just below 8:00.