I did this workout once and felt like it was way, way harder than Threshold 5.4. I was searching for it the other day and it seems not to be there. Was this intentionally removed?
Indeed it was – Foster (and similar workouts) was a session that wasn’t rated appropriately at Threshold 5.4 (as you said, way, way harder than 5.4!), so we’re working on reclassifying those ones.
Glad to hear that. I remember staring at the power levels and durations in the week prior to doing it and wondering how the heck I was going to make it through. Turns out I couldn’t.
If you can’t find Foster, I would suggest trying Carlsberg, probably the best workout in the world…