Just for fun - I did an all trails search. 11 trails in Grinnell - more than I thought. And like an hour away is the Cedar River which had trails all over. I just drove from Cedar Rapids up to Mn and it seemed pretty long.
Walla Walla didn’t have many more (16) but had more elevation.
That’s just a city to city comparison, not beyond.
Perhaps Grinnell has enough nature - but the student would have to decide.
Also, given the student is an athlete - did they have preference for one coach over another ?