Las Vegas to Toronto in May/June 2009.
I wanted to see some states I'd never been to before, such as Wyoming, Montana, South Dakota, Iowa, and Minnesota, so my route was by no means direct.
I covered just under 6,000 kms in 8 days, and had rain for the last 4 days straight. My ride was great, except that the high mileage days were also the rainiest, so very long days indeed. I was traveling solo, but never lacked for company.