That course can run super fast if there was no rain/snow leading up to the race. But to put the 14:10 in context a little, as a junior Ritz only ran 15:05 at the state meet. But then went on to a 14:55 CR at FLMW in Kenosha, and then won in 14:29 CR at FLN in Orlando.
As a senior, after going 14:10 at state, he went 14:35 at Kenosha, and then 14:35 in a more tactical FLN in Orlando. So Grant's Kenosha performance could be more telling on his fitness relative to Ritz as a senior. From all indications I've seen, he appears to be at least 20 seconds faster than last year.
And knowing how his coach approaches racing (preparing to win the big ones, as opposed to time trialing often), he's likely training through all these meets until FLMW.
ritzeinhein 14:10 5k