PBs since age 60: 5k- 24:36, 10k - 47:17. Half Marathon- 1:42:41.
10 miles (unofficial) 1:16:44.
Actually, Jim, I was just using my own body weight for resistance, my legs must be weak.
I agree with the hill suggestion, but am looking for ways to protect my Achilles, shins etc. by finding substitutes for some of the running. (Though 4 years younger than you I may not be as durable!)