Completed another 4 miles tonight in slightly better than pace time. The gym is still too hot. Think Thursday's final run will have to be outside and may be a little slower to start winding up ready for the big run. No aches or pains but heart rate was up to 180 at around 30 minutes. I'm putting that down to the heat in the gym as my 7 miler on Sunday didn't get up to 180 at all.