Nashville Superspeedway, which had two dates, has closed. The series also won’t return to Lucas Oil Raceway, New Hampshire Motor Speedway and Darlington Raceway.

NASCAR had explored going to other new venues. NASCAR Senior Vice President Steve O’Donnell indicated it will continue looking at them.

“Looking ahead, interest in the Truck Series continues to grow in a number of different markets and we’re excited about what the future holds for next season and beyond,” O’Donnell said in a news release.

In other changes, the Phoenix event was moved from the second race of the year to the next-to-last race in November, giving the track a tripleheader weekend in the fall.

Chicagoland Speedway moved its race to July for a Nationwide-Truck series doubleheader weekend.

2012 Camping World Truck Series Schedule

Feb. 24 Daytona International Speedway
March 31 Martinsville Speedway
April 15 Rockingham Speedway
April 21 Kansas Speedway
May 18 Charlotte Motor Speedway
June 1 Dover International Speedway
June 8 Texas Motor Speedway
June 28 Kentucky Speedway
July 14 Iowa Speedway
July 21 Chicagoland Speedway
Aug. 4 Pocono Raceway
Aug. 18 Michigan International Speedway
Aug. 22 Bristol Motor Speedway
Aug. 31 Atlanta Motor Speedway
Sept. 15 Iowa Speedway
Sept. 21 Kentucky Speedway
Oct. 6 Talladega Superspeedway
Oct. 13 Las Vegas Motor Speedway
Oct. 27 Martinsville Speedway
Nov. 2 Texas Motor Speedway
Nov. 9 Phoenix International Raceway
Nov. 16 Homestead-Miami Speedway