Yes, Zwift has finally built a 400m track! You'd think that would be the last thing you'd want for treadmill running. I've been hoping they'd create one for ages and I was hoping it would feel as focusing as being on a real world track. I can report I found myself more absorbed then ever. It felt more than ever like actually closing down the rep as you ran. If I'm honest I didn't really go at it this evening. It was more of a tester into how well the virtual track would work and I'm happy that it's going to be just the ticker for intervals. It's a thumbs up from me.