Marc was a Belgian professional

cycling team A cycling team is a group of cycle sport, cyclists who join a team or are acquired and train together to compete in bicycle racing, bicycle races whether amateur or professional – and the supporting personnel. Cycling teams are most important i ...

that existed from 1978 to 1980.

References

Cycling teams based in Belgium Defunct cycling teams based in Belgium 1978 establishments in Belgium 1980 disestablishments in Belgium Cycling teams established in 1978 Cycling teams disestablished in 1980 {{Belgium-sport-team-stub