Interurban South and Green River trails

Green River

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Interurban South

This 15-mile southern route connects Tukwila to a little beyond Auburn and connects to bike lanes and low-traffic roads that can help you get even farther south. It's not a particularly exciting route, it mostly follows the power lines, but does not have the scenery of the nearby Green River Trail.  However, it is entirely flat and is a good way to cover a lot of ground quickly.