Well I'm glad someone started this thread because I just had the nicest run today!
I blew off the club ride today because I'm trying to train for a 5K in three weeks and I really want to run it at least a minute quicker than I did last year. If I'd have run yesterday as I was supposed to, I'd have ridden today, but after two hard runs and two hard rides in the four days prior, then a Pilates class (mainly for social value, but there was a bit of a workout there) and a GREAT yoga class yesterday morning, I was just sore all over and couldn't motivate to do any cardio.
So I did my "long run" today, and I'm pretty sure it's the first time I ever felt like I could run easy, keep my heart rate down and still be running. Okay, jogging, but it counts as running since it was slow on purpose right?
What counts as a "long run" for me was only 10K, but I just can't believe how good it felt. 
Intervals on New Year's Day after a social bike club cruise.
One day next week I'm going to finally do that ladder interval workout that's been languishing in my GPS for weeks. 
My reflective gear is an Amphipod Xinglet, and if it's cold, a hi-viz yellow PI knit cap (not reflective, but screaming bright).
Syndi & Jes, hope your injuries heal fast.
Speed comes from what you put behind you. - Judi Ketteler