your times are d3. in d3 there are no walkons, no one is on scholarship. the big first hurdle is admissions. a rare few athletes might get special admissions help for being good for the level. but most people are on their own to get admitted. you either fit the admissions profile or not. you don't tell us scores. to be clear, if coaches have admissions pull, and it varies, it's not for the 445 kid. you're on your own for admissions.
the second hurdle is some d3s have roster limits and some do not. some schools run like baby d1s and there are a finite amount of running slots and you have to be recruited to them ahead of time.
with your times, you are a non-roster limits d3 kid. maybe you could try some roster limits teams and see but you'd be iffy. if you want to run, you need to research (look up team rosters on their website and meet results on TFRRS) and parse out which programs are roster limits and which are not. my sense, UAA, hopkins, w&l, and the top nescacs are roster limits. the claremonts (pomona and mckenna), swat, haverford, grinnell, some of the weaker nescacs, no limits or at least none that affect you. each of those will have some kids over 5.
if you do your research there are actually some good no limits schools.
the hard parts are admissions and then if you go to one of the roster limits schools. if you pursue the non roster limits schools it's do you get in or not. that's it.
for your purposes, williams is a limits school; swat and haverford are not.
and then the hurdle beyond that is making the conference and regionals travel teams, and trying to become competitive. there are some conferences with entry limits for cross/track or qualifying times for track. if your goal is to run conference you might figure out what is what.
last thought, you mention just 3 schools, they all have low admissions rates, and you're not telling us scores. be sure you fit the admissions profiles because you aren't getting any help as a recruit. i would pursue a couple dozen schools -- and make a lot of them good if you want -- because some are going to tell you "no" and you want options.