Thanks for all the support. I’m going to finish this plan running in zone 2, like I have be sticking to the last 4 weeks. Once I can run 13.1 miles nonstop, I’ll find a new plan that helps build speed. I am on week 13, so next weekend is my first 10 mile run. Last week’s 9 miles was already the longest I’ve ever ran. It’s interesting because I’ve been adding a fartlek on the first run of the week, and when I do I can tell I’m on the verge of straining my left calf (always my left). So, I keep my Fatlek tame, too, and aim for 1 minute at an 8:30-9:30 mile pace, and then 1 min recovery jog, anywhere from 15-20 times which gets me anywhere from 4-5 miles. I’ll make sure I dont do anything more than that this plan.