Highway 101 in the western United States is one of the most iconic routes in the world, running from Washington state, through Oregon and down through California, where it connects with the classic, coast-hugging Route 1.
But with such a huge area, it's not easy to know where to start, or finish, or indeed, what to do in between. Which famous attractions are worth a detour? And which tourist traps should be avoided? Where's the best place to stay, eat and drink on a budget?
If you are planning a road trip, along all or part of the coast, our panel of experts can help answer your queries, whether they're about visiting the north-west cities of Seattle and Portland; hiking Redwood forests; exploring San Francisco or hanging out on the beaches of LA or San Diego.
Post your questions in the comments below and our expert panel will be live online between 4-5pm (BST) on Thursday 23 May.
If you live on the west coast, or know any of the major cities well, we'd love you to join in the chat and share your tips. Plus, from Monday 27 May, join Jacob Steinberg on our Twitrip from Seattle to San Francisco.
The experts
Scott Leonard, from Portland, Oregon, is the author of hiking guides Moon Washington Hiking and Moon Take a Hike Seattle, and co-author of Pacific Northwest Hiking. He enjoys spending his time exploring the great outdoors of the Pacific Northwest.
Ben Vickery and Aaron Rayburn live in Portland, close to where they both grew up. They are passionate about the Columbia River Gorge, and blog about Portland's exuberant arts and culture scene on fortport.com.
Jennifer Maerz is a producer at the Bold Italic , an online magazine, blog, events hub and shop that celebrates all things San Francisco. Jennifer is a pop culture writer who has worked for various publications along the west coast. Her speciality is advice on northern California road trips.
Evan Karp is a writer, with columns in the San Francisco Chronicle, SF Weekly, and SF Arts. He founded and runs the nonprofit Quiet Lightning, and founded and edits Litseen, a daily calendar of the Bay Area's literary events. Originally from Savannah, Georgia, he has lived on the west coast for nearly four years and enjoys biking through northern California's various microclimates.
James Bartlett is a British freelance journalist based in Los Angeles. He writes for the Los Angeles Times, LA Weekly, BBCAmerica.com about the weird and wonderful side of life in LA. He is also the author of Gourmet Ghosts – Los Angeles, a guide to haunted bars and restaurants across the city.
Candice Woo is a freelance food writer and restaurant critic based in San Diego. She covers restaurants, chefs, craft beer, bars and nightlife for a number of publications, and is currently the editor of Eater in San Diego.
Pam Mandel is a freelance writer who lives in Seattle, Washington and blogs at Nerd's Eye View. Her work has been published in Conde Nast Traveler online, Afar, the San Francisco Chronicle, Gadling, World Hum. She thinks the world's best beach is in Olympic national park on the Washington coast.
Alissa Walker is a Los Angeles-based writer and radio producer, who covers design, architecture, cities, transportation and walking. She has written for Wired, LA Weekly and the Los Angeles Times, among others. She relishes life in LA without a car and blogs at AWalkerinLA.com. Follow her on Twitter: @gelatobaby