Sometimes when I walk, around the 2.5 mile mark, I get this biting pain in my inner knees. I wear Dr. Scholl's insoles and New Balance running shoes, but I still get it. Maybe it's just the cost of being overweight all of those years.
So I have done 5km 2 days in a row 29:07, 29:51. Also walked 6.5km 2 times.