Tagalternate pace workout

This morning’s run mixed things up, literally – 10 miles total, the middle 6 alternated between a 10K pace and a marathon pace (goal 6:45 and 7:30 respectively). At the start of each mile I ran 3 minutes at the 10K pace and then finished out the mile at the marathon pace. I’m not gonna lie, I was nervous about my ability to seamlessly shift gears for 6 straight miles without...