First long bike ride: Determining the cause of saddle soreness I went on my first long bike ride yesterday - approximately 30 miles. (I know, it's cake to you grizzled road veterans out there, but I'm proud!) I had a great time and we took a fairly leisurely pace - approximately 10 mph or so. Lots of cycling and a lot of conversation.

I didn't have any problems with energy or anything, but during the ride I was a bit sore in the saddle. Due to our pace, I was able to ease this a few times by standing in the pedals and pedaling infrequently. By the time we were getting back (the last mile or so) I was really feeling it, but today it seems to be okay. Overall, it worked well.

I'm thinking that the soreness is probably just the symptoms of a longer ride (and me not being used to that). However, I figured I'd ask. How would I, as a relatively new rider, know when saddle soreness is caused by a bad (for me) saddle or bad saddle adjustment versus extended time in the saddle? Are there specific symptoms that I should be looking for?

Edit: I'm looking for generalizations, as I know that specifics change with each rider and bike. An example would be something like, "if you have excessive soreness in your inner hamstring area, your seat may be too far forward", stuff like that. As it stands right now, I'm chalking this all up to the first ride, but I'd like to be knowledgable for future rides (and not ignore any potential warning signs I might miss).

Thanks!

(As a note, for anyone who might ask - I'm riding a Fuji Traverse 1.7. Everything's stock. I'm about 5'10", 5'11" with long limbs.)
The first ride gives almost everybody soreness. 

You should be using your sit bones with your saddle. You can roughly measure this at home. A too narrow or too wide saddle may give some pain (note this is not the same thing as soreness).

Also, you may want to invest in padded bike shorts. Those help some people.