Save This Event For Later 2018 COMBO Winter Race Series Carroll, OH, Sat Jan 6 - Sun Feb 25, 2018 Who's Registered? | Contact Event | Google Calendar Start line address: Mason Road NW, Carroll, OH 43112 Presented by COMBO This is a past event. If you wish to see the details for this event click, "Continue" below. If you are looking for a current event, please search the event calendar . Online Registration is closed Registration for the complete series (all 4 races) is closed. You can still register for the remaining individual races. Online registration for each race is open until 10:00 AM day of. Race #2 Jan 29th, Race 3 Feb 11th, Race 4 Feb 26th.