I think the calf problem and the fasciitis are related tbh. The latter comes and goes and the former kicks in like a muscle tear after 2 miles.Bilateral compartment syndrome after the military. 1 year of reformer pilates I was running 5km again. 2 years and I was doing 10km for the first time ever.
I can’t recommend reformer pilates enough.
Need to work harder at the stretching I think. Like most runners I was on first name terms with a couple of sports injuries physios and they all told me the same, stretch more often