Yes, I had nice walk and took my bike along too. Overall I enjoyed the challenge but there was more HaB than I was expecting. Towards the end I even walked up the steep fire road on the final loop as I was so spent.
I’m not sure doing it in reverse would have made much difference. Most of the singletrack ascent was followed by singletrack descent, and vice versa.
I think I spent maybe 20% of the time walking (so maybe 10% of the distance), but I was on a 30-odd pound full-sus with 1×10. On a light hardtail I with the right gearing I could have ridden a lot more. It was mostly my legs rather than grip that let me down.