umm... thats the women's heats and it's D3, anyone can run for a D3 school. I can honestly do the #1 time on there right now. The only time I ever ran a mile in actual competition it was like a 4:40 something. Post up the men's times and you'll see that getting under 5 minutes is not that uncommon.
1.5 miles in under 10 minutes is not that hard at all. I could pull 2 miles off in probably around 11. This is also saying you're in the physical condition to do this, i'm not trying to cut down on anyone.
as for d-ramey running a mile in under 4 minutes, there's no fucking way.