23 miles each way minimum. Quite often 34 miles and sometimes 54 miles (not lately). About 1000 ft elevation gain there; about 800 elevation gain home. About half on the Burke-Gilman Trail.
I normally use a 2009 Salsa Fargo that weighs about 45 lbs with all my junk in the panniers.
It takes me a minimum of an hour and a half.
I do it twice a week and LOVE it!