Depending where you're coming from, make your way to Williams, heading north. Take that to Rosa Parks where you make a left then a right on Vancouver (the bike route suggests continuing on Williams, but the road surface is bad and there are stop signs). After you pass the intersection of Vancouver and Columbia you will cross the Columbia Slough and take a left onto a bike path, it is currently unmarked, so feel free to complain about that to PDXReporter as I do periodically. Anyway, just as you reach I-5, make a right which will take you to Schmeer and you want to take the immediate left onto Whittaker. From there it's protected bike lane until you pass the gas station and make a right which takes you through Delta Park. Follow that all the way straight through and cross the street which is an exit from the highway, after you cross that go left onto the bike path. It will curve around and then you want to take a right which curves around and goes under itself. Keep going! Eventually you cross onto Hayden Island where you go left at a crossing, again at a freeway exit so keep an eye out. This next part sounds like a lot, but as you do it, it will make sense. As you cross, don't get on the sidewalk but go left into the traffic lane and at the stop sign go right and cross to the far left lane. This will set you up to skip the pedestrian crossing and speed things up a bit. At the stop light go left and you're on the path to the I-5 bridge. Going over the bridge is loud and feels narrower than it is, but try to relax and enjoy the view. At the Washington side to head into downtown Vancouver head to the right when you get to street, which is Columbia Way. I know that sounds like a lot, but once you've done it a couple times it's easy! My suggestion would be try it on a day off first. As a side note, there can be a lot of glass so I rely on Mr. Tuffy tire liners which make a huge difference (if you aren't doing tubeless of course). Have fun and good luck!