So far so good! I have stuck with the traditional easy intervals as Boston is less than two weeks away. 1k/2k reps on road loops at 3:25ish/7:05ish and 400/200 reps on the track in 73ish/34ish depending on the day. I completed 3 easy paced long runs (6:40-7:00 min/mile) with surges at 6 weeks (16.5 miles), 4 weeks (20 miles), and 2 weeks (20 miles) out. I did experiment with a few double workout days, and while they went well, I was close to overdoing it last week, ha! For the first time in a long time, I have enjoyed a weekly day off.
Racing an 8k on Saturday for a fitness check and tune-up! I am not expecting to "knock it out of the park" at Boston but I feel fairly fit, healthy, and have a pleasant amount of spring in my legs. Excited to experiment with this method more long term after the marathon! I believe in it, just takes patience and a lot of discipline to avoid running too hard.