Many of the D3 conferences have very fast teams - the D3 NESCAC Conference schools, in particular, are a great choice for those looking for highly selective schools that also have strong competition.
Top-50 NESCAC females ran a sub-4:55 1500 / 5:16 1600, with the top-25 putting down sub-4:47 1500 / 5:08 1600 marks last Spring.
https://www.tfrrs.org/lists/1737.html