To Alaska by water, w/o motor.
In June, 2015 some brave souls will race from Port Townsend, WA to Ketchikan, Alaska. Human and wind power only, no motors of any kind. No support. Of course contestants will be stopping at ports along the way — it would be way less fun if they couldn’t stop — but no support boats. And they must carry normal safety gear and a GPS locator.
Simple, but a big challenge.