Kyle Larson rallies from lap down to win at Eldora

ROSSBURG, Ohio (AP) - Kyle Larson rallied from a lap down to win the NASCAR Camping World Truck Series race Wednesday night at Eldora Speedway.

The 23-year-old Sprint Cup driver had a flat right rear tire while leading about a third of the way through NASCAR's lone dirt race in its top three series. He got back on the lead lap with a free pass on a caution and quickly worked his way to the front.

"I knew we'd get the Lucky Dog," Larson said about the free pass. "I just didn't know that I could get back to the top three as quick as I did."

Driving GMS Racing's No. 24 Chevrolet Silverado, Larson held off Christopher Bell, the Oklahoma dirt racer who won last year for Kyle Busch Motorsports. Larson led 48 of 150 laps on the half-mile clay oval owned by Sprint Cup star Tony Stewart.

Bobby Pierce, the leader for 102 laps, finished 24 laps down in 25th after fighting Larson for the top spot. The 19-year-old driver hit the wall and had a flat right rear tire on his MB Motorsports entry.

"The carburetor was flooded and I couldn't get off the corner at all. Larson drove a great race," Pierce said. "When that happened on the restart, I caught him a little bit, he hit the wall and I tried to slide him. I went in there a little too hard, it was super-slick and I got the wall and knocked the right rear off the rim and that was that."

Larson raced to his second Truck series victory in 12 career starts. He also has four victories in the second-tier Xfinity Series, winning this year at Pocono.

"It just worked out where I got by Bell when he got in the wall and I think Bobby had a gear issue," Larson said. "He was definitely better than I was for sure."

Larson finished 0.767 seconds ahead of Bell.

"We got going pretty good there for a while," Bell said. "But the more it got built up on the fence ... the worse we got."

Rico Abreu was third in a ThorSport Racing Toyota, also rallying from a lap down.

Jake Griffin was fourth, followed by Tyler Reddick, Cole Custer, Cameron Hayley, Daniel Hemric, Austin Wayne Self and Matt Crafton.

Points leader William Byron was 14th. He has a nine-point lead over second-place Crafton.