Help- Want something arduous-

[mrtawney]

I wanted to avoid needless innuendo-
For the last month and half, I've training to complete the Death March in Julian. I pre-rode the course yesterday- and discovered that the loops really aren't for me. (I'll give an RR today after I relax down Marshal Canyon.)
But I don't want this training to go for naught-
So I am looking for a course/trail that I could log 60+ miles on- It can be an out and back-
I don't know many many trails at all and my orienteering skills are worse than my single track skills (really bad). So I am asking for some possible paths-
I would like to ride Indian Truck Trail- and maybe go from there, but I don't know if that would give me the miles I desire- I'd like to stay in the ITT area if possible-
HELP-
Thanks a bunch-