My husband, a friend and I will be riding our bicycles home to Decatur, GA from the Santa Monica Pier beginning in March. Enough people seem interested that we thought it would be a good way to raise money for Water Life Hope. I suppose we could go all the way to the Atlantic but we've ridden from Decatur to the east coast so many times that it really seems superfluous. So it's sea to (almost) sea. About 2900 miles. You can pledge per mile, sign up for a state or go regional. See my blog for more information: https://sea2sea4water.blogspot.com/