Wow, what a finish! Clayton Young is your men's @usatf 15 km Champion!

And it's @Em_Sisson winning the @usatf 15 km Championship title!!!

Defending champ Frank Lara, Kipchirchir, Simbassa, Raneri...there are 10 men in contention as they start over the bridge and start thinking about the finish at the @usatf 15 km Championships...this finish is going to be amazing!

Chris Derrick now leads the men's race, but still 12 men tightly packed together

And the chase pack has finally caught Raneri...30 minutes into the race

Women's top 10 at 10K:

Sisson
Flanagan
Durgin
Morley
Kemp
Murphy
Montoya
Stoner
Pagano
Thweatt

.@Em_Sisson hits 10K in 31:34, 14 seconds behind @ShalaneFlanagan's AR pace. Sisson has a 42 second lead over second place @lflanagan242

12 men in the chase pack closing in on Raneri at the 25 minute mark at the @usatf 15 km Championships

The lead Raneri built up over the first 5K is quickly diminishing...

Men's top 10 through 5 km at the @usatf 15 km Championships:

Raneri
Vaughn
Gidabuday
Kipchirchir
O'Connor
Monroe
Thomson
Wacker
Martin
Derrick

John Raneri leads the men's race through 5 km in 14:22, +14 ahead of the men's chase pack, which has 15+ men in it

Sisson has a 17 second lead at 5K over second place Lindsay Flanagan, who site 5 seconds ahead of Durgin in third.

Record Watch: @Em_Sisson is dominating early at the @usatf 15 km Championships. Hits the 5K in 15:38. @ShalaneFlanagan hit 5K in 15:29 in 2014 when she set the American Record of 47:03.

9 minutes into the women's race and @Em_Sisson has a 16 second lead over the field - Durgin & Flanagan sit 2-3 and lead the chase pack

And the men are off and running at the @usatf 15 km Championships. Kipchirchir, Lara, Hehir and Bennie lead the charge!

Two minutes in and @Em_Sisson already has a big lead at the @usatf 15 km Championships. Here we go!

And the women's race is off in Jacksonville at the @usatf 15 km Championships. Sisson, Bates, Kipyego and Kemp headline the field as they get going.

It's 55 degrees and very windy this morning at the USATF 15 km Championships. The webcast is underway and races start soon.