Ecce, I think maybe use 65% as a starter point. But in the phase you are in, it really doesn't matter. Infact it should give you a nice warm feeling with numbers that low
VT, and breeeeaaaaathe...... and what DrDan said.
Yesterday's run was a big step forward for me, and my foot rehab. Just over 8 miles in 67mins @ 73%, with 20mins @ 80.4% (7:28 pace). Plenty of work to do, but I have now put a marker down. Hoping to get a longish run in (~80mins) and a bike ride in this weekend.