John W. from Pittsburgh, PA on 7/12/2015 8:24:00 PM:
The GAP is made if crushed limestone so it's never too muddy though you'll get a bit gritty from it but even wet it's not too bad. It drains really well. The C&O is, for the most part, almost always muddy in parts. It's a dirt trail to begin with but it doesn't dry out very well. The tree canopy is very thick and it remains wet even days after it rains. No worries though. You'll be sweaty from the heat and exertion...the wet and dirt just become second nature when riding. :-) After a few miles in it, you just plow through the puddles instead of tying to avoid them. I use lots of those huge gallon and storage zip locks to keep all of my important things dry in my bags. It's good to know that even though I'm wet, sweaty, and dirty, all of my stuff is nice and dry if I got caught in a storm or wet trail.