Now you can either step it up to 400km, or dial it back to 200km. This is a classic Alaskan adventure–ride Anchorage to Seward and either ride back for the 400 or take the train for 200. The ride starts at an ungodly hour so 200km riders can make the train and so that all riders will have minimal traffic on the highway to Girdwood. 400 kilometers is a long way, but you will have lots of time and lots of daylight. And nothing beats seeing a Turnagain Arm sunrise from your bike!