3 large marshmallows per scout

Set up the kicking, throwing, and blowing stations separately so groups can rotate through them with minimized waiting.

Kick: Each scout stands at the kicking line and kicks one of his marshmallows as far as he can. His distance is measured and tallied. You might have a rule that a scout can have a second attempt if it is missed or goes less than 1 foot.

Throw: Each scout stands at the throwing line and throws one of his marshmallows as far as he can. His distance is measured and tallied.

Blow: Each scout stands at the blowing line and puts a marshmallow in his mouth. He blows it as far as he can. His distance is measured and tallied.

The winner is the one with the farthest combined distances. Or, do as a patrol competition and add up the Kick, Throw and Blow scores for each patrol member. Divide by number of patrol members to reach an average. Patrol with the highest score wins.