Many of the runners in the Green Bay Marathon participate in the 'Run for a Reason' program, which allows them to forego their entry fee by raising money for the participating charities. In the past, the race has generated more than $1 million dollars for local charities like Big Brothers Big Sisters, which encourages children to participate in sports. A Health & Fitness Expo is happening at the same time to grab your enthusiasm for training and channel it into shopping.