Save the date 3. May 2025

GIGA event to celebrate

25. Years of Geocaching


Let us meet in Prague for a big celebration

May 1st is a public holiday (Czech Republic and Germany, for example), and in 2025 it falls on a Thursday - allowing visitors a convenient way to travel to Prague for a long weekend.

May 2nd is the anniversary of the end of "selective availability", which made geocaching possible.

Selective Availability was an intentional degradation of public GPS signals implemented for security reasons. When selective availability was enabled, this added 50 meters of error horizontally and 100 meters vertically to GPS signals.

The main day of celebration will be Saturday 3 May - the anniversary of the first geocache.

The very next day after selective availability was removed, May 3, 2000, Dave Ulmer founded the world's first geocache. This gave birth to a global activity that is now enjoyed by millions of people around the world.

GPS Maze will also be part of the celebrations

Listings for side events can be published no earlier than six months before the event, in autumn 2024.

Event shop

You can support the organization of the mega event by purchasing a geocoin

Before Christmas 2023, Geocaching HQ announced the possibility to use the Block Party icon for the 2025 big events, which was previously only available in Seattle and only very rarely.

The following rules apply:

- An event can only have just one of the icons - either Mega/Giga or Block Party.

- The organizers must decide on the choice before the event is published, no additional changes are possible.

- It is not possible to have more of these types of events in one place at the same time, close or soon after each other. Minimum distance is 5 hours drive.

- Therefore, no other Mega/Giga/Block Party event can be organized within 5 hours drive from Prague during the whole weekend.

Due to the complexity of organizing Giga Events, of which there have been only 11 worldwide so far (including 2 in the Czech Republic), compared to the much lower requirements for Mega Events, we can expect at least several dozen Block Party events worldwide next year and only one or two Giga events.

Last year there were 58 Mega Events worldwide (8 of which were in the Czech Republic), all of which were potential Block Party events. In addition, it looks like there will be more Block Party events that would otherwise struggle to reach Mega Event status. So it seems that Giga Event will still be an order of magnitude rarer type of event than Block Party even taking into account the fact that HQ has only released them for 2025. In the future, Giga Events will not be frequent either.

So we will be aiming for a Giga Event!

However, the event will be published as a mega. In order to reach the Giga Event, the event will need to get at least 3000 Will Attend logs.

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