HOKAOne One Mens Rincon 3 Mesh Butterfly Summer Song Trainers 9 US

I've been doing shorter runs in a pair of these (3-7 miles) for months and they're OK, but I went for a 20-mile walk through Manhattan and my lower back and arches were absolutely killing me, in a way I'd never experienced before. So much so that I switched the next day to a pair of Clarke loafers, walked a similar distance, and had minimal to no back pain. These are literally the most uncomfortable shoes I've ever walked in.