I'm in the ~13 minute a mile range (my plan still has me at 1/2 walking, 1/2 running) - so I would say that's a fine pace.

It has been a week since I ran, and I did a hard (for me) trainer workout yesterday and walked ~4 miles with DH before running. Oof that hurt! Having trouble dressing for running - at 55 wore short sleeves and capris. Arms were a bit chilly - but if I had worn long sleeves, I think I would have been too hot.