2018 Mid-Ohio Sports Car Course schedule:
IMSA May 4-6
Vintage Grand Prix of Mid-Ohio – June 22-24
AMA Vintage Motorcycle Days – July 6-8
The Honda Indy 200 at Mid-Ohio – July 27-29
Mid-Ohio Challenge (NASCAR Xfinity event) – August 10-11
2018 Mansfield Motor Speedway schedule:
Sprint Car World Championship – April 27-28
Monster Truck Mania – June 16
Freedom Fest 2018 – July 1
Great Lakes Dirt Nationals – August 10-11
Dirt Million – August 24-25
Crash Carnival – September 15
Shawshank 100 – September 21-22