West Spotting Guide

Last verified: August 2026

The West is the one region where Tagspot's two hardest plates — Alaska and Hawaii — stop being pure long-shots and start being narrowly, genuinely reachable. That's the headline difference from every other region's guide.

The locals

California, Arizona, Nevada, Oregon, Washington, Colorado, Utah, Idaho, Montana, New Mexico, and Wyoming form one tightly connected cluster along I-5, I-15, I-80, I-70, and I-90 — expect most of them without trying on any real Western road trip.

What's reachable here that isn't everywhere

Alaska is the big one. It's still not reachable by a direct drive from most of the country, but from the Pacific Northwest specifically it stops being pure luck: the Alaska Marine Highway ferry system runs out of Bellingham, WA, and the Alcan Highway — through British Columbia and the Yukon — is a real, if long, drive from anywhere in the Northwest. A Washington- or Montana-based trip has a real shot at an Alaska plate that a Georgia-based one basically doesn't. Hawaii stays close to impossible everywhere, since cars only get there by ship — but West Coast port cities (Seattle, Long Beach, San Diego) are about as close as it gets, being where Hawaii-bound and Hawaii-registered vehicles are most likely to pass through. Baja California plates are also a routine sight anywhere near the San Diego–Tijuana crossing — the West's version of what Texas gets from mainland Mexico.

Corridors worth knowing

Winter ski corridors — I-70 through Vail and Aspen, and I-15/US-40 into Utah's Wasatch resorts near Salt Lake City — pull plates from across the entire country, not just the West, since these are national ski destinations. National park season (Yellowstone, Grand Canyon, Zion, Glacier) does the same in summer. And British Columbia and Alberta plates are a routine sight anywhere near the I-5, I-15, or I-90 crossings into Washington and Montana.

For the national picture — why some plates are hard everywhere, not just far from home — see the main spotting guide. Starting somewhere else? There are guides for the Northeast, Midwest, and South too.