Two studies released this week -- one in Iowa and the other in bike-friendly Boulder -- once again prove that bicycling is good for local economies.

The new studies support similar reports from Wisconsin, Pennsylvania and elsewhere that bicyclists are capable of opening their wallets and spreading around some cash, sometimes at a jaw-dropping rate.

The Iowa report finds that recreational bicycling creates nearly $365 million in direct or indirect economic benefit to the state; $1 million a day. Bicycle commuting adds another $54 million a year.

In Boulder ...