Running (Treadmill) 1:00:00 [5] 6.58 mi (9:07 / mi)
15 min warm up, 30mins at 10%grade, 9:45/mile, 15min cool down.
Found this really tough today. I was at a different gym to usual & I'm not sure the treadmills are calibrated the same as the other gyms I've used (as the other two gyms are similar I'm assuming they're wrong in this one!). There was no way I could hold 10% on this and I've done this session before...not easy, but done it without dying!
Anyway, after 5mins at 10% I had to knock the grade down to 8% and that felt about the right sort of intensity. Still hard, but I could hold it for the remaining 25mins.