I had THR anterior, on my left hip on July 14th.
On Aug 14th, I was released for the pool. Fortunately, it stayed warm here in MD until mid-Sept, and I did a lot o walking in the shallow end and some laps.
On Sept 7th, I was released for anything.
I rode a few times on my Zwift in the basement, 8-10 miles at an easy pace (no hills on my Hub).
I went outside near the end of Sept and overdid it. 15+ plus miles was too much, even on the relatively flat C&O Canal (I'm 2.5 miles from the Canal, with some hills). I backed it down to 8-10 mile rides and tried to keep my pace not over 15 mph. Cycling on the bike, I had no pain/issues, but the next day my left thigh was very sore.
This weekend, I rode 15 miles Saturday at a 14.5 mph pace and had no issues.
Last night,I rotated the tires on my Avalon, and my thigh is sore today.
The doc told me I'd have soreness for until mid-January and let my body pace my activity.
It's been tough, not leaping right back into where I was pre-op.
I do a lot of stretching 3x's day, that really helps.