"The weather was extremely hot, with near 100-percent humidity, which tested the riders' physical strength and endurance," Bigelow said. "Riders ages 4 to 50-plus vied for national championships and top specialty awards from the AMA."

2015 AMA Motocross Horizon Award winner Benny Bloss

The AMA Motocross Horizon Award, captured by Bloss, is given to the rider who shows the most promise heading into the professional ranks. Bloss won the Open Pro Sport class and finished third overall in the 450 A class. 

"I definitely was not expecting it, but it feels amazing to be added to the list of names of people that have been given the award," Bloss said. "It's crazy to think that I'm on that list now." 

Bloss said the track conditions were the best he had ever seen and that he was able to have a great week by being consistent.  

Bloss will immediately turn pro, competing at an upcoming round of the AMA Pro Motocross Championship. 

"I'm feeling really, really excited," Bloss said. "I will be riding for CycleTrader.com/Rock River Yamaha, and I think it will be a really fun experience."

The AMA Motocross Amateur Rider of the Year Award was clinched by Austin Forkner of Richards, Mo., who claimed the 250 B and Schoolboy 2 (13-16) B/C championships on his Kawasaki. The award recognizes an outstanding non-A-class rider at the event. 

Forkner was signed to the Monster Energy/Pro Circuit/Kawasaki team following the event, although he will continue to race for Monster Energy Kawasaki Team Green until the start of the 2016 AMA Pro Motocross season.  

The AMA Motocross Youth Rider of the Year Award was won by Jett Reynolds of Bakersfield, Calif., who swept all six motos in 85cc (9-11) and 85cc (9-11) Limited on his Kawasaki. The award is presented to a rider under 16 years old. 

Sebastian Tortelli of La Jolla, Calif., won the AMA Motocross Vet/Senior Rider of the Year Award, based on his performance in the vet classes. Tortelli -- a two-time FIM World Motocross Champion -- took the Vet 35+ championship and took second in the Junior 25+ class aboard his Yamaha. 

Another notable accomplishment came from last year's AMA Motocross Amateur Rider of the Year, Tristan Charboneau, who set the fastest lap time of the week at 1:53.547. 

Below are the 38 AMA National Champions crowned at the event:

Open Pro Sport: Benny Bloss

250 A: Mitchell Harrison

250 B Limited: Joey Crown

250 B: Austin Forkner

250 C Limited: Sam Franklin

250 C (12-16) Limited: Levi Newby

250 C: Sam Franklin

450 A: Bradley Taft

450 B Limited: Brandon Hartranft

450 B: Jon Ames

450 C: Dylan Gillespie

Two-Stroke (16+): Justin Cooper

College (16-24): Justin Cooper

Junior 25+: Ricky Renner

Vet 30+: Paul Perebijnos

Vet 35+: Sebastian Tortelli

Senior 40+: Douglas Flinner

Senior 45+: John Grewe

Masters 50+: Earl May

51cc (4-6) Special Limited: Emile Lacher

51cc (4-6) Shaft Drive Limited: Canyon Richards

51cc (4-6) Limited: William Canaguier III

51cc (5-7) Limited: Casey Cochran

65cc (7-9) Limited: Ryder Difrancesco

65cc (10-11) Limited: Maximus Vohland

65cc (7-11): Matthew LeBlanc

85cc (9-11) Limited: Jett Reynolds

85cc (9-11): Jett Reynolds

Mini Senior 1 (12-13): Carson Mumford

Mini Senior 2 (12-14): Pierce Brown

Super Mini 1 (12-15): Garret Marchbanks

Super Mini 2 (13-16): Garret Marchbanks

Schoolboy 1 (12-16) B/C: Marco Cannella

Schoolboy 2 (13-16) B/C: Austin Forkner

Girls Senior (12-16): Hannah Hodges

Girls Junior (9-13): Jazzmyn Canfield

Women (16+) All-Star: Mackenzie Tricker

Women (14+): Gracie Van Horn

Complete results from the 2015 AMA Amateur National Motocross Championship can be found at http://lorettas.tracksideresults.com/index.asp. 

RacerTV.com also provided over 40 hours of live coverage throughout the week, and the archived footage is available at RacerTV.com. 

For more information about the event, see www.mxsports.com. For more information about AMA-sanctioned competition, see www.americanmotorcyclist.com/racing.  

About the AMA Amateur National Motocross Championship

The AMA Amateur National Motocross Championship represents one of the longest-running motorsports championships in the country. The American Motorcyclist Association launched the national championship program in 1975. That year, a series of regional races qualified 135 riders in three classes -- 125cc, 250cc and Open -- for the championship round in Baldwin, Kan. The program evolved over the next few years to include additional classes, with championship finales run in varying locations across the country. In 1982, the AMA partnered with MX Sports and the event moved to its current location at the Loretta Lynn Ranch in Hurricane Mills, Tenn. There, the AMA Amateur National Motocross Championship continues to crown the country's top amateur motocross racers every summer.

About the American Motorcyclist Association

Founded in 1924, the AMA is a not-for-profit member-based association whose mission is to promote the motorcycle lifestyle and protect the future of motorcycling. As the world's largest motorcycling rights and event sanctioning organization, the AMA advocates for riders' interests at all levels of government and sanctions thousands of competition and recreational events every year. The AMA also provides money-saving discounts on products and services for its members. Through the AMA Motorcycle Hall of Fame in Pickerington, Ohio, the AMA honors the heroes and heritage of motorcycling. For more information, visit www.americanmotorcyclist.com.

Not a member? Join the AMA today: www.americanmotorcyclist.com/membership/join