I've clocked a pretty pathetic 7:32 on my Fire Red game. I'm only at the Rock Tunnel, so it kind of makes sense.
I've got a lot more time on my Emerald version - 144:09. It only took about 48 hours to complete the actual game, but I spent the rest of the time trying to fill out my Hoenn Pokedex so I could get one of the Johto starters as a reward. :) Out of all my games, my Crystal file has been going the longest, 201 hours and 40 minutes.
But yeah... I'm one of those people who goes around reading every sign and talking to every single person in the game. I also tend to spend a long time in grassy areas training my Pokemon.