Jharte from Raytown on 5/19/2019 9:58:39 AM:
Hello Mark,
The nearest (continuous) Rock Island Trail starts in Pleasant Hill, MO. There is a Trailhead and it's safe for overnight parking. From the Lee's Summit Depot it's about a 20 minute drive via highway or about 1.5 hrs by bike via Smart Road. The Rock Island Trail from Pleasant Hill to the Katy Trail (and beyond) is an excellent ride and highly recommended. I've ridden across the state a few times from Pleasant Hill and really like it.
Sorry, not sure if Amtrak goes to Washington.
-Jharte