Via the SHIFT list, this is an interesting way to mix modes, especially for all the rail fans in the readership:

Monthly Small Museums tour by Bike – Trainspotting!
Union Station, 800 NW 6th Ave
Sat 11/4, 1:00p (Tour will last at least 3 hours, more if interest))
Contact: Carye Bye, 503-248-4454, bathtublady[at]gmail.com

Details:
This Month: All Aboard! From Union Station to model trains – we are going to go trainspotting on today’s tour & bike ride. First stop is our beautiful Union Station where we will spend some time admiring this great way of trave by visiting collections and displays in this beautiful historic building. Then we’ll head on to the Columbia Gorge Model Railroad Club in Inner North Portland to see all kinds of regional train exhibits including a train model out of legos! And after all that if the weather is nice we’ll head out to explore and trainspot (feel free to bring ideas for secret or not so secret train inspired places to ride.)

Bring $4 for the model RR Museum and your best train-hopping or train-tripping experiences to share.

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Join us for a monthly bike tour of Small Museums & Collections in the Portland area. Each month we’ll pedal to unique collections, enjoy presentations by experts, and have a fun yet educational outing by bike. The tour is lead by Carye Bye, the director of the Bathtub Art Museum (www.bathtubmuseum.org)