I just did the same 6 minute run after my group session this morning, and considering we finished with a metabolic 'finisher' that consisted of a 4 minute bear crawl (hands on sliders, so perhaps more of a plowing motion), I felt pretty good about that. I am also getting really bored with running on the track inside - and I KNOW I can run a lot further on the trail than I can on the inside track. 50's this weekend - though plans will likely keep me too busy for any trail running