UNOH Sprintacular Click the thumbnails below for a sampling of photos from UNOH SPrintacular (All Star Sprints / NRA Sprints / BOSS Sprints) at Eldora Speedway. Photos courtesy of Mike Campbell and Jim Denhamer. Click the thumbnails below for a sampling of photos from UNOH SPrintacular (All Star Sprints / NRA Sprints / BOSS Sprints) at Eldora Speedway. Photos courtesy of Mike Campbell and Jim Denhamer.