During times where I am exercising I would go walking and had gotten up to 2 miles and it took about 40-45 minutes to do that. 5K is 3.1 miles, I thought I could do it in 1 hour.
I was in the Women age 35-39 division. I placed 23rd in that division and 134th overall (but I don't know how many participated). My time was 55:17.7 (55 minutes 17.1 seconds)