Postcrossing Blog

Good news, everyone! Just like in the last couple of years, Geocaching is joining the World Postcard Day celebrations with a special souvenir!

In 2025, 20,791 geocachers logged attendance at a World Postcard Day-themed event, and many postcards also made their way to Geocaching HQ in Seattle, where they were proudly displayed around the office. Look how cool their walls look!!

So we’re happy to share that Geocaching is continuing this collaboration in 2026! 🎉

Here’s what you need to know: from September 27 to October 4, 2026, geocachers will be able to earn the World Postcard Day souvenir by attending or hosting a Geocaching Event, as well as finding and logging one Letterbox Hybrid geocache. The dates line up neatly around World Postcard Day, which is on October 1.

By now, I think everyone knows what Geocaching is all about… but for those who might not be familiar with it, it’s a global treasure-hunting game played outdoors with the help of a GPS or smartphone. Players search for hidden containers (called “caches”) all around the world, sign their logbooks, and then share their adventures online. It’s all about getting out there in nature, looking out for treasures with friends!

This year’s extra challenge is kind of cool too: Letterbox Hybrid caches are inspired by letterboxing, a hobby that combines navigation, puzzle-solving and rubber stamp artistry. Many Letterbox Hybrid caches include a stamp for visitors to use in their own logbook… but which could also be used on a postcard, to make it extra fancy! 😍

If you’re organizing or attending a Geocaching event during that week, why not bring a few postcards along? You could write postcards together, exchange them, send one to Geocaching HQ, or even invite other curious geocachers to discover Postcrossing and the World Postcard Day.

And if there isn’t an event near you yet, you can always organize one yourself on the Geocaching website, making sure to follow their event guidelines. If you need ideas, you can check out Geocaching’s wrap-up post from last year, with photos and stories from the 2025 celebrations.

So let your postcards tag along on a little Geocaching adventure! Pack a pen, bring a few postcards, keep an eye out for Letterbox Hybrids, and see where the adventure takes you!

Do you remember last year, when we mentioned there would be a special souvenir on Geocaching for official events taking place around World Postcard Day? Well, it was a huge success: 19,260 geocachers attended at least one event during that week, and the number of events nearly doubled compared to 2023. We were blown away by these numbers, and are thrilled that Geocaching is continuing this collaboration in 2025! 🎉

So here’s the scoop: from September 28 to October 4, 2025, if you attend any official Geocaching event and log your attendance, you’ll receive a special World Postcard Day souvenir on your Geocaching account. The dates line up perfectly this year, with October 1 (World Postcard Day) falling right in the middle of the week.

For those who might not be familiar with it, Geocaching is a global treasure-hunting game played outdoors with the help of a GPS or smartphone. Players search for hidden containers (called “caches”) all around the world, sign their logbooks, and then share their adventures online. Much like Postcrossing, the community meetups on Geocaching are all about connection around a common hobby.

And what better way to celebrate that than by combining the two hobbies? Geocaching events are a great opportunity to meet fellow geocachers, exchange stories, and maybe even write a postcard or two. Some groups even organized joint Postcrossing + Geocaching meetups last year, and we’d love to see more of those in 2025!

If you can’t find an event nearby, you can always organize one yourself. Just remember that events need to be submitted at least two weeks in advance and meet all of Geocaching’s guidelines.

For inspiration, check out Geocaching’s wrap-up post from last year, filled with photos (and postcards!) from events all over the world.

Whether you’re out hunting for caches or sending a postcard across the globe, mark your calendars for the last week of September. Grab your GPS, pack a few postcards, and join the fun!

Have you ever heard of Geocaching? It’s a fun treasure hunt activity that consists of finding small containers (aka caches) that others have hid all around the world, aided by clues and GPS coordinates. We’ve played it for almost as long as we’ve run Postcrossing, and enjoy searching for these little canisters and tupperwares wherever we go. It’s a fun challenge and a different way to explore the world, luring us to nice places we might have otherwise missed. Some caches are hidden in picturesque parks, others in bustling urban spots — and every single one has its own story and little surprises inside, often including small trinkets left by other geocachers.

If you’re new to the hobby, we encourage you to give it a go! All you need is a smartphone with GPS to get started. There are millions of caches hidden worldwide, waiting to be discovered. But for those of you who are already part of the Geocaching community (and we know many postcrossers are also geocachers), we wanted to give you a heads-up about something special: a World Postcard Day themed souvenir!

From September 29 to October 5, 2024, Geocaching is celebrating World Postcard Day with a twist. If you attend any official Geocaching event during this period and post an “Attended log” for that event, you’ll receive a special World Postcard Day souvenir on your Geocaching account. It’s a fun way to celebrate postcards and geocaching simultaneously!

There are plenty of events happening worldwide during that week, so all you have to do is find one near you, go, and log your attendance. It’s a great opportunity to meet fellow geocachers, exchange tips, stories, and maybe even send some postcards! And if you can’t find an event near you, you can always organize one! There’s still time to plan a postcard-themed Geocaching event — and we think it would be extra fun to combine it with a Postcrossing meetup! This could be a nice way to bring together two communities that love exploration and connection.

For those of us who are both geocachers and postcrossers, this crossover event is a dream come true, combining both hobbies at once. Whether you’re exploring new cache hiding spots or mailing postcards to someone across the globe, this is a good time to share your love for adventure, discovery, and connection with others. So pack your GPS, grab a few postcards, and join the fun!