Nearby Letterboxes
Note that distance is dependent on the accuracy of each clue, typically city center.
(233 listings)
| Letterbox name | Found date | Clue owner | Location | County | Distance | |
|---|---|---|---|---|---|---|
| B.Y.D. #1 Attempted: Aug 4, 2013 | — | Adoptable Planted: Nov 15, 2007 | Lyons, CO | Boulder | 0 | |
| Rabbit Mountain Attempted: May 13, 2007 | — | Adoptable Planted: Oct 19, 2003 | Lyons, CO | Boulder | 0 | |
| Rabbit Mountain: Pipkin’s Place Retired: Jan 11, 2023 | — | MileHighFive Planted: Sep 19, 2009 | Lyons, CO | Boulder | 0 | |
| Mountain Fountain | — | GS77038 Planted: Nov 18, 2021 | Mountain Fountain Hygiene, Colorado, CO | Boulder | 5.5 | |
| Mountain Fountain | — | GS77038 Planted: Nov 18, 2021 | Mountain Fountain Hygiene, Colorado, CO | Boulder | 5.5 | |
| Pelle Crossing Unknown: Nov 24, 2013 | — | Adoptable Planted: Aug 27, 2005 | Hygiene, CO | Boulder | 5.5 | |
| REB 6 (2) Found 2: Jun 30, 2013 | — | Adoptable Planted: Aug 6, 2007 | Hygiene, CO | Boulder | 5.5 | |
| Lyons Memorial Labyrinth, #1 | — | Adoptable Planted: Sep 11, 2015 | Lyons Park, S St Vrain Trail Lyons, CO | Boulder | 5.6 | |
| Alaska Yin / Colorado Yang Retired: Feb 25, 2016 | — | Adoptable Planted: Nov 16, 2008 | Longmont, CO | Boulder | 9.8 | |
| Chief Left Hand Attempted: Jan 31, 2010 | — | Adoptable Planted: Jan 25, 2005 | Longmont, CO | Boulder | 9.8 | |
| Chilly Night - MISSING Missing: Feb 6, 2016 | — | Adoptable Planted: Apr 8, 2006 | Longmont, CO | Boulder | 9.8 | |
| Grandview Meadows Attempted: Sep 22, 2010 | — | Adoptable Planted: Aug 9, 2008 | Longmont, CO | Boulder | 9.8 | |
| Longmont History Found: Jul 19, 2013 | — | Adoptable Planted: Apr 1, 2009 | Longmont, CO | Boulder | 9.8 | |
| Red Retired: Apr 6, 2016 | — | Adoptable Planted: Jan 9, 2006 | Longmont?, CO | Boulder | 9.8 | |
| Right Brain Retired: Apr 6, 2016 | — | Adoptable Planted: Apr 1, 2009 | Longmont, CO | Boulder | 9.8 | |
| Roaring Waterfall Attempted: Aug 25, 2012 | — | Adoptable Planted: Aug 8, 2008 | Longmont, CO | Boulder | 9.8 | |
| Santa's Long Night Found: Dec 29, 2008 | — | Adoptable Planted: Nov 24, 2008 | Longmont, CO | Boulder | 9.8 | |
| St. Vrain Greenway (3) Retired 3: Apr 7, 2016 | — | Adoptable Planted: Apr 1, 2009 | Longmont, CO | Boulder | 9.8 | |
| The Ranting Raven Retired: Apr 7, 2016 | — | Adoptable Planted: Apr 1, 2009 | Longmont, CO | Boulder | 9.8 | |
| Discover Anubis Found: Jul 19, 2013 | — | Adoptable Planted: Oct 31, 2012 | Egyptian Imports by Discoveries, 454 Main St. Longmont, CO | Boulder | 9.8 | |
| Sawtooth Retired: Apr 6, 2016 | — | Adoptable Planted: Apr 29, 2007 | Jamestown, CO | Boulder | 9.8 | |
| Kids reading bugs Retired: Apr 6, 2016 | — | Adoptable Planted: Oct 12, 2010 | Longmont Public Library Longmont, CO | Boulder | 9.9 | |
| Butterfly Trail Missing: Apr 6, 2016 | — | Adoptable Planted: Jun 5, 2005 | Niwot, CO | Boulder | 9.9 | |
| Cougar Pride Retired: Apr 6, 2016 | — | Adoptable Planted: Jun 7, 2005 | Niwot, CO | Boulder | 9.9 | |
| Niwot Cemetery Found: Jan 13, 2022 | — | Adoptable Planted: Jul 30, 2005 | Niwot, CO | Boulder | 9.9 | |
| Pixar Fun: Flik Loves Princess Atta Found: Aug 2, 2013 | — | Adoptable Planted: Aug 22, 2011 | Longmont, CO | Boulder | 9.9 | |
| Buffalo roam Found: May 4, 2014 | — | Adoptable Planted: Nov 19, 2012 | Longmont Museum Longmont, CO | Boulder | 10.6 | |
| Lyons Memorial Labyrinth #2 | — | Adoptable Planted: Oct 11, 2015 | S St Vrain Trail Park Lyons, CO | Boulder | 11 | |
| A Handy Roar Land | — | Master of Sky Planted: Nov 14, 2020 | 501 Dakota Blvd Boulder, CO | Boulder | 11 | |
| A Favorite Book: Chrysanthemum | — | Adoptable Planted: May 1, 2010 | Berthoud, CO | Larimer | 11.6 | |
| Twin Lakes Trail Found: Oct 26, 2015 | — | Adoptable Planted: Mar 6, 2013 | Gunbarrel/Twin Lakes Boulder, CO | Boulder | 12 | |
| Wild Ride | — | Master of Sky Planted: Oct 21, 2023 | Wonderland Lake Playground Boulder, CO | Boulder | 12.2 | |
| Sandstone Found: Jul 26, 2013 | — | Adoptable Planted: Nov 13, 2012 | Sandstone Ranch Visitors Center Longmont, CO | Weld | 12.9 | |
| RestStop Missing: Oct 15, 2017 | — | The Googly Crazies Planted: Oct 22, 2011 | Round Mountain Loveland, CO | Larimer | 13.5 | |
| Rocky Mountain Park Webbox Found: Aug 28, 2011 | — | Azroadie Planted: Jul 29, 2007 | Rocky Mountain National Park Meeker Park, CO | Boulder | 13.7 | |
| Douglas County Open Space: Box 9 Hummers Paradise Found: Oct 20, 2012 | — | The Woodshed Planted: Aug 19, 2011 | Glendale Farm Open Space Surrey Ridge, CO | Douglas | 14.1 | |
| 888 Found 3: Jun 11, 2009 | — | Adoptable Planted: Aug 8, 2008 | Boulder, CO | Boulder | 14.5 | |
| A Flower for John & Eva - Reported missing Missing: Feb 6, 2016 | — | Adoptable Planted: Nov 11, 2005 | Boulder, CO | Boulder | 14.5 | |
| A Road-Side Incident Found: Apr 14, 2014 | — | Adoptable Planted: Dec 27, 2005 | Boulder, CO | Boulder | 14.5 | |
| At Ease In Your Own Shell Retired: Apr 6, 2016 | — | Adoptable Planted: Jun 18, 2011 | Boulder, CO | Boulder | 14.5 | |
| Bellatrix Letterbox Missing: Apr 6, 2016 | — | Adoptable Planted: Aug 31, 2008 | Boulder, CO | Boulder | 14.5 | |
| Best seat in Town Found: Jan 19, 2009 | — | Adoptable Planted: Nov 9, 2008 | Boulder, CO | Boulder | 14.5 | |
| Boulder Bones Found: Jan 23, 2011 | — | katzenjammy Planted: Oct 4, 2010 | Boulder, CO | Boulder | 14.5 | |
| Boulder Safari 1 Found: Apr 13, 2024 | — | Adoptable Planted: Jul 25, 2009 | Boulder, CO | Boulder | 14.5 | |
| Create More Art: My LASS Found: Nov 5, 2013 | — | Adoptable Planted: Jul 21, 2011 | Boulder, CO | Boulder | 14.5 | |
| Devil's Tower Retired: Apr 6, 2016 | — | Adoptable Planted: Jan 25, 2008 | Boulder, CO | Boulder | 14.5 | |
| Evergreen Found: Oct 27, 2008 | — | Adoptable Planted: Jan 20, 2006 | Boulder, CO | Boulder | 14.5 | |
| Feral Cat Letterbox | — | Adoptable Planted: Aug 20, 2005 | Boulder, CO | Boulder | 14.5 | |
| Ferny -MISSING! - will replace ASAP Retired: Feb 6, 2016 | — | Adoptable Planted: Jun 30, 2007 | Boulder, CO | Boulder | 14.5 | |
| Fly, Be Free! Found: May 19, 2010 | — | Adoptable Planted: Jan 13, 2006 | Boulder, CO | Boulder | 14.5 | |
| Ham & Eggs Retired: Jul 8, 2016 | — | Adoptable Planted: Aug 5, 2013 | Boulder, CO | Boulder | 14.5 | |
| Hit and Run Arf Attempted: Jun 18, 2014 | — | Adoptable Planted: Jun 20, 2008 | Boulder, CO | Boulder | 14.5 | |
| Just Visiting Found: Mar 15, 2015 | — | Adoptable Planted: Mar 7, 2007 | Boulder, CO | Boulder | 14.5 | |
| Mesa Trail Found: Jul 11, 2011 | — | Adoptable Planted: Sep 26, 2004 | Boulder, CO | Boulder | 14.5 | |
| Mushroom Park Found: Sep 18, 2005 | — | Adoptable Planted: Jul 27, 2005 | Boulder, CO | Boulder | 14.5 | |
| Puzzling Bugs - Many boxes missing! 10/20/09 (6) Retired 6: Jun 27, 2016 | — | Adoptable Planted: Mar 3, 2006 | Boulder, CO | Boulder | 14.5 | |
| Sanitas Is My Home Found: Apr 10, 2009 | — | Adoptable Planted: Sep 5, 2006 | Boulder, CO | Boulder | 14.5 | |
| Scott Carpenter Attempted: May 28, 2008 | — | Adoptable Planted: Jul 29, 2005 | Boulder, CO | Boulder | 14.5 | |
| Soaring Snake - PULLED Found: Sep 30, 2006 | — | Adoptable Planted: Apr 3, 2006 | Boulder, CO | Boulder | 14.5 | |
| Southern Buffalo Found: Oct 7, 2010 | — | Woodland Wanderer Planted: Apr 9, 2006 | Boulder, CO | Boulder | 14.5 | |
| Spud Trooper Mini Me - MIA Found: Nov 15, 2008 | — | Adoptable Planted: Jun 20, 2008 | Boulder, CO | Boulder | 14.5 | |
| Sugarloaf Mountain Colorado Found: May 26, 2019 | — | Adoptable Planted: Oct 28, 2009 | Boulder, CO | Boulder | 14.5 | |
| Sunny and Share Found: Oct 14, 2013 | — | Adoptable Planted: Jan 11, 2009 | Boulder, CO | Boulder | 14.5 | |
| The Coyote's After You Retired: Apr 7, 2016 | — | Adoptable Planted: Jan 25, 2008 | Boulder, CO | Boulder | 14.5 | |
| Tulsa Boy Abroad #1: Tulsa Skyline *MISSING* Missing: Feb 6, 2016 | — | Adoptable Planted: Jun 9, 2008 | Boulder, CO | Boulder | 14.5 | |
| Two Niner Juliet Found: Jan 19, 2010 | — | Adoptable Planted: Dec 30, 2004 | Boulder, CO | Boulder | 14.5 | |
| 777 Attempted 1: Apr 13, 2024 | — | Adoptable Planted: Jul 7, 2007 | Boulder, CO | Boulder | 14.5 | |
| Celestial Tea Time Found: Jul 2, 2023 | — | Adoptable Planted: Jun 24, 2007 | Boulder, CO | Boulder | 14.5 | |
| Eben G. Fine Start Box | — | Adoptable Planted: Jun 30, 2013 | Eben G. Fine Park Boulder, CO | Boulder | 14.7 | |
| Bolder Boulder Retired: Apr 6, 2016 | — | Adoptable Planted: May 30, 2011 | Folsom St & Stadium Dr Boulder, CO | Boulder | 14.8 | |
| Tom Horn Found: Sep 15, 2015 | — | Silver Eagle Planted: Jul 17, 2015 | Pioneer Cemetery Boulder, CO | Boulder | 14.9 | |
| Baldpate Key | — | Silver Eagle Planted: Jul 27, 2015 | Baldpate Inn Estes Park, CO | Larimer | 15 | |
| Scott Carpenter Found: Sep 15, 2015 | — | Silver Eagle Planted: Jul 18, 2015 | Centennial Park Boulder, CO | Boulder | 15.1 | |
| The Devil's Dance | — | Adoptable Planted: Sep 19, 2013 | Devil's Backbone Loveland, CO | Larimer | 15.4 | |
| Rocky Mountain Haven Attempted: Mar 27, 2012 | — | CW Sun Seeker Planted: Nov 19, 2004 | Loveland/Estes, CO | Larimer | 15.6 | |
| Hangman Game 85 | — | Silver Eagle Planted: Jul 17, 2015 | Chautauqua Park Boulder, CO | Boulder | 15.6 | |
| Here's to your next adventure! | — | The Googly Crazies Planted: Oct 15, 2017 | Loveland, CO Loveland, CO | Larimer | 15.8 | |
| Swampy Beech Box | — | Adoptable Planted: Feb 20, 2016 | Loveland, CO | Larimer | 15.8 | |
| A children's time in the stacks Attempted: Jan 5, 2014 | — | Alaska HSM Planted: Jun 19, 2012 | Loveland, CO | Larimer | 15.8 | |
| A Favorite Book: Charlotte's Web Attempted: May 22, 2011 | — | Adoptable Planted: Mar 15, 2010 | Loveland, CO | Larimer | 15.8 | |
| A tour of the stacks Found: Jun 17, 2014 | — | Alaska HSM Planted: Jun 19, 2012 | Loveland, CO | Larimer | 15.8 | |
| Buckhorn Northern Attempted: Jul 25, 2017 | — | Adoptable Planted: May 3, 2008 | Loveland, CO | Larimer | 15.8 | |
| Charlie's Charlotte Retired: Apr 6, 2016 | — | Front Range Hiker Planted: Jun 14, 2009 | Loveland, CO | Larimer | 15.8 | |
| Forever Young (Hometown Tribute II) Found: Sep 13, 2009 | — | Adoptable Planted: Aug 10, 2009 | Loveland, CO | Larimer | 15.8 | |
| GAQBE09: Gray Wolf In Colorado Found: Apr 14, 2010 | — | Adoptable Planted: Nov 5, 2009 | Loveland, CO | Larimer | 15.8 | |
| Heart o' the North Rodeo Found: Feb 8, 2010 | — | Adoptable Planted: Aug 10, 2009 | Loveland, CO | Larimer | 15.8 | |
| Jolly Roger letterbox Attempted: Jun 18, 2013 | — | Adoptable Planted: Mar 27, 2008 | Loveland, CO | Larimer | 15.8 | |
| Missing OBX: Blackbeard Found: Mar 15, 2014 | — | Adoptable Planted: Jun 2, 2011 | Loveland, CO | Larimer | 15.8 | |
| Missing OBX: Happy Belly Ice Cream Retired: Apr 6, 2016 | — | Adoptable Planted: Jun 2, 2011 | Loveland, CO | Larimer | 15.8 | |
| Share The Love Attempted: Jul 6, 2007 | — | CW Sun Seeker Planted: Oct 4, 2004 | Loveland, CO | Larimer | 15.8 | |
| The Big Thompson Flood Found: Feb 26, 2016 | — | Ramdelt Planted: Jan 22, 2005 | Loveland, CO | Larimer | 15.8 | |
| The Seven Treasures of the High Plains Series (7) Found 1: Aug 5, 2017 | — | Adoptable Planted: Apr 20, 2009 | Loveland, CO | Larimer | 15.8 | |
| Welcome to LOVEland Found: Apr 13, 2010 | — | Adoptable Planted: Mar 24, 2010 | Loveland, CO | Larimer | 15.8 | |
| The Flatirons: Gizmo's Getaway OK: Aug 12, 2011 | — | MileHighFive Planted: Jul 10, 2011 | The Flatirons Boulder, CO | Boulder | 16.5 | |
| Bryan's Guitar Missing: Jul 30, 2014 | — | Adoptable Planted: Dec 29, 2013 | Benson Sculpture Park Loveland, CO | Larimer | 16.6 | |
| Missing OBX: Building Sandcastles Attempted: Sep 14, 2017 | — | Adoptable Planted: Mar 28, 2011 | Loveland Burial Park Loveland, CO | Larimer | 16.6 | |
| Bible Point- box is gone now Attempted: Aug 15, 2010 | — | Adoptable Planted: Aug 22, 2006 | Estes Park, CO | Larimer | 16.9 | |
| Elk Nursery Attempted: Aug 20, 2018 | — | Adoptable Planted: Jan 6, 2007 | Estes Park, CO | Larimer | 16.9 | |
| Gem Luck Found: Oct 1, 2009 | — | Adoptable Planted: Aug 6, 2009 | Estes Park, CO | Larimer | 16.9 | |
| Moose in the Mountains Found: Apr 2, 2017 | — | Adoptable Planted: Jul 2, 2010 | Estes Park, CO | Larimer | 16.9 |