Also, 15th place at 3:57.8 has to be a record for place... track or road.
Nope. Fastest 15th place, from WR Mile race =
3:53.64 Youssef Baba (MAR) Rome, ITA July 7, 1999
2014 Fifth Avenue Mile had a record 14 women break 4:30 in the same Mile race (road or track); 15 men went sub-4.