- will start in Manhattan the evening of Friday, July 22 and end at River Front Park in Lawrence on Saturday, July 23.  Friend of the Kaw needs volunteers from 10am to 7pm to man our BBQ tent at River Front Park in Lawrence on July 23 (contact riverkeeper@kansasriver.org.)  Race organizer needs volunteers at race check points for Friday and Saturday (contact vicki@rivermiles.com.) More information on the race check out http://rivermiles.com/