Downtown Seattle Professional Review and Guide
"Some people get great enjoyment from being a tourist in their own town, but for longtime locals who work in downtown Seattle, a bike tour through the city center may seem like the last thing they would want to do on a day away from the office. However, this tour is designed to hit many high spots a tourist might enjoy, so you can either play visitor or grit your teeth and use the tour to entertain out-of-town guests.
This modest 10-mile spin would take about an hour if you rode it straight through, and it has only one gradual incline, stretching from the International District to the downtown library, so it should be within the abilities of even the occasional rider. The difficulty comes from street traffic, which can be significant during work days or on game days in the stadium area, so this tour is best ridden on a weekend, fit in around game schedules and ridden by people comfortable riding in traffic."