Some 18 NOC members took part in the event staged at Harlaxton College hosted by the Lincoln Orienteering Group (LOG) early in February, part of the East Midlands League.
There were NOC podium finishes for Patrick Cain (Light Green), Sam Clements (Orange) and Elodie Booker (Yellow).
Seven others finished in the top ten of their respective courses: Tim Booker, Tony Donaldson, Catherine Hughes, Richard Beadle, Tricia Neal, Janet Cain and Tina Brindley.