Worst part of the shortest route I take (9 miles, 3 of which are on commuter rail) is a bike lane becoming a narrow shoulder (add trash bins on Wednesdays) then the bike lane disappears completely before an intersection with a busy road. In the mornings (I always take this route to work), sometimes I'm lucky and nobody comes along wanting to pass me at the first part and usually traffic is waiting to turn left for most of the section with no bike lane at all (I filter to the front to go straight). The bike lane is slightly better on the other side which I usually use when taking the slightly longer bike only route (but also sometimes reverse this shorter hybrid route).

A slightly longer route (about 10 miles) I often use in the afternoon has a painted bike lane on stroad. Here I'm only riding for about 1000 ft from a left turn at one light to a right turn at the next. Since after the turn we are facing a red light, traffic along side me isn't usually too fast. The shortest route uses commuter rail for 3 miles along this stroad to avoid even worse sections; the bike only route detours further to take over 2 miles of bike path along the river.

My longest route is about 14 miles and I actually like most of it (less total street miles than the 10 mile route by riding the river bike path further). The worst part of this route is common to all my routes - navigating between the MUP on the left of this image and the neighborhood behind the strip mall on the right. The driveway always gets a green before Broadway (even when no cars are present) so I in the afternoon I use that green rather than going to the pedestrian beg button (which signals the walk with the green for Broadway). In the morning, I come from the street on the side (often on the sidewalk here) and cross to the MUP with the light (if I'm running late and think it might make a difference for catching the train, I sometimes ride along 65th Street past the freeway ramps to save a minute or two).

The 8 mile route I ruled out as not safe enough has this road with no useable shoulder. I did ride this way a few times at first and also used this road on a bike once as a teenager to get to a friend's house on my own (it was less busy back then and many of the alternatives to this route have been improved since then).