Get ready for a sweet new souvenir! Pi Day 2025
Get out your calculators!
There are countless ways to celebrate geocaching this year! Multiply your excitement with this mouth-watering mathematical moment, Pi Day 2025.
Pi Day is an annual celebration of the mathematical constant π (pi), observed on March 14th because the date (3/14) corresponds to the first three significant digits of π (3.14). The tradition began in the United States and has since gained worldwide recognition.
In 2025, geocachers can earn the Pi Day souvenir by finding and logging any Mystery Cache between Friday, March 14 and Sunday, March 16. To make this holiday extra sweet, all non-Premium Mystery Caches are open to everyone throughout the weekend on the Geocaching® app from 11:00:00 UTC on Friday, March 14 until 10:00:00 UTC on Monday, March 17, 2025.
