The 100-mile ride Sunday raised ten-thousand dollars for Special Olympics.
Etter and Markins were killed a year ago when Tyson Kreuscher rammed his truck into their squad car at a stop sign. Kreuscher is serving two life prison sentences.
The ride started and ended in Green Bay and went through Manitowoc and Kewaunee counties.
Many who participated were police officers from northeastern Wisconsin.
Retired officer Brent Muller of Brillion who taught Markins to ride, rode her motorcycle.