Geocache & Letterbox

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Geocache & Letterbox

Geocaching is an outdoor treasure hunting game using GPS-enabled devices. Navigate to a specific set of GPS coordinates and attempt to find the geocache (container) hidden at that location.

There are hundreds of geocache locations all around the Cascade Loop Scenic Highway, from mountain trails to city parks, and everything in between.

To find the geocaches along the Cascade Loop visit and search for geocaches by zip code of the following towns, and don’t forget to share your finds with us on our Facebook page!

City Zip Code
Anacortes 98221
Burlington 98233
Cashmere 98815
Chelan 98816
Concrete 98237
Coupeville 98239
Everett 98204
La Conner 98257
Langley 98260
Leavenworth 98826
Manson 98831
Marblemount 98267
Mazama 98833
Monroe 98272
Mount Vernon 98273
Mukilteo 98275
Oak Harbor 98277
Pateros 98846
Sedro-Woolley 98284
Skykomish 98288
Snohomish 98291
Sultan 98294
Twisp 98856
Wenatchee 98801
Winthrop 98862