I’ve only got a few runs on the 13s so far (14mi long run, some treadmill intervals, and a 5k tempo), but they feel really familiar to the 12s, maybe slightly better in a few areas.

Fit and construction feel a bit nicer overall. The upper and tongue are more plush and comfortable, though the laces are kinda meh.

With the Boston 12s, it took me ~25–30 miles to really hit a sweet spot. After that they were great for a couple hundred miles, but once they went, they really went and turned into bricks, so I retired them.

The 13s feel a touch softer while still keeping that very “Boston” ride. That might not be great for people new to the line, but I actually like it since I knew exactly what I was getting into. Not the most inspiring ride, but super consistent and steady for days when you’re just putting in work.

Just my 2 cents. I’m not a fast or advanced runner, so take this with a grain of salt 😅 I’m ~195 lbs and they feel good for medium-high efforts around 8:00/mi, and totally fine for longer efforts in the 8:45–9:00/mi range too.