Chit-chatting on my long runs with the folks in my training group invigorates me. It takes my mind off perceived effort and makes the miles seem shorter. Often times, one decent story (say, how my friend's son has given up diapers yet isn't quite potty trained) can last a mile. And once the tears dry up after learning that the little boy just wanted access his penis "so it dodn't faw aff," I can look around and say "Whoa, we're already on Main St!"
A few months ago, I found some iFriends (to coin a phrase), for my solo running days. While searching for free stuff on iTunes, I stumbled upon a podcast called the Extra Mile. It's a bunch of runners from all over the globe that submit stories & running updates, recorded while they are running. Some are advanced, some brand new, but all have that slightly stecato speech that you get when you converse on the trail. I love it. And it trips me out when I hear a car coming, then look around to find an empty street followed by the runner announcing "Hold on, I've got to cross this intersection." Most of the episodes run around 60 minutes (pardon the pun), so I can stretch a 45 workout into an hour with less mental resistance. They accept submission from practically anyone, so if I ever figure out how to carry a recorder in my bra, you might hear my voice one day...and we can advance from being e-friends to iFriends.