The 2018 US 15k champs were held this morning as the 40th Gate River Run was held in Florida.
Molly Huddle won by 50 seconds in 47:50 to Jordan Hasay's 48:40 with Molly Seidel third in 49:20. In the men's race Leonard Korir pulled away from Sam Chelanga in the final mile and won in 43:06 with Sam Chelanga second in 43:15 and Martin Hehir third in 43:19.
Huddle, Hasay and Seidel gapped the field early hitting 5k in 15:51 and then Huddle pulled away shortly after mile 4, hitting 10k in 31:46 before winning in 47:50 (last 5k of 16:04 per the official split website not the tweet below). According to the official results website, Huddle ran her last mile in 4:48, Hasay 4:54 and Blaase 4:59. That seems really fast but the race now on purpose features a huge downhill last mile. - they call it the "Downhill Mile Challenge." I think the bridge is 141 feet high so if they drop an entire 141 feet that would be worth slightly more than 25 seconds according to John Kellogg's formula of 1.8 seconds for every 10 feet of elevation drop.
Splits: 5k, 10k, 8.3 miles, 15k
Huddle: 15:51, 31:46 (15:56). 43:02 at 8.3 miles and 47:50 (16:04)
Hasay: 15:59, 10k not recorded, 43:47 at 8.3, 48:40.
Seidel: 15:59, 10k not recorded, 44:17 and 49:20
Korir: 14:41, 28:45, 38:52 at 8.3 miles, before winning in 43:06
Chelanga: 14:42, 28:45, 38:52, 43:15
Hehir: 14:42, 28:55, 39:00, 43:19
Korir ran his last mile in 4:15, Hehir 4:20 and Chelanga in 4:23