I have a few but haven't had the opportunity to mash them. They range from 62 to 73 miles. Those mileages seem like something I'd be capable of doing in one day.
The starting point is near downtown so having to go west instead of south would probably add too much distance than I'm capable of .
I'd like the idea of low traffic ,so dirt /gravel doesn't bother me. You can pass along your route . I wouldn't mind seeing it anyhow.