All right, so I'm running my first 10K next week. I was never a great cross runner in high school, my best time was 18 flat. I'm in great shape now, but I've been training for shorter distances for indoor season. I've put in a bit of base and I ran 18:59 in an easy 5K fun run with no competition a few weeks ago.
What might I expect in terms of a 10K time? I figure I'm strong enough to run in the very low 18s with competition in the 5K. What would that convert to? 37 or 38 minutes? Obviously the race is twice as long, but I've never gone over 5K so I'm just looking for some input.