CacheHackCacheHack
Back to Tutorials
Cache TypesIntermediate15 min read

How to Approach Challenge Cache Qualifications

Understand challenge cache requirements including D/T grids, Jasmer, calendar challenges, find counts, and learn how to use challenge checkers effectively.

What are Challenge Caches?

Challenge caches require you to complete specific geocaching achievements before you can log a find. Unlike puzzle caches where you solve a puzzle to get coordinates, challenge caches have published coordinates but require proof of meeting certain criteria.

Must meet requirements BEFORE loggingChecker verifies qualificationPhysical cache to sign

Using Challenge Checkers

Most challenge caches have a "checker" - an online tool that verifies if you meet the requirements. Here's how to use them:

  1. 1.Look for the checker link on the cache page (usually Project-GC or GeoCheck)
  2. 2.Click the checker and log in with your geocaching.com credentials
  3. 3.The checker analyzes your profile and shows if you qualify
  4. 4.If you don't qualify, most checkers show what you still need
  5. 5.Take a screenshot or note the "qualified" status as proof

Common Challenge Types

Find Count Challenges

Requires a certain number of cache finds to qualify.

Examples:

  • • 1000 finds milestone
  • • 500 traditional caches
  • • 100 caches in a specific county

Tips:

  • • Check your statistics on geocaching.com or Project-GC
  • • Some count specific cache types only
  • • Date restrictions may apply

Calendar/Date Challenges

Based on finding caches on specific dates or completing date-based patterns.

Examples:

  • • Find a cache on every day of the year (366 challenge)
  • • Find a cache every day for 30 consecutive days
  • • Find caches in every month of a year
  • • Leap day finds (February 29th)

Tips:

  • • Project-GC has excellent calendar visualization
  • • Start tracking early - some dates are harder
  • • February 29th is the hardest day to fill
  • • Look for 24/7 accessible caches

D/T Grid Challenges

Complete portions of or the entire Difficulty/Terrain grid.

Examples:

  • • Full 81-square D/T grid completion
  • • Complete a row or column
  • • Find all terrain 5 or difficulty 5 caches
  • • D/T combinations with specific cache types

Tips:

  • • T5 caches require climbing or special equipment
  • • D5 caches are usually the most challenging puzzles
  • • Some combinations (like D1/T5) are rare
  • • Plan T5 caches carefully - may need training

Cache Type Challenges

Find specific types of caches or combinations of types.

Examples:

  • • Find every cache type
  • • 50 multi-cache finds
  • • 25 Wherigo finds
  • • 100 puzzle cache finds

Tips:

  • • Some cache types (APE, GPS Maze) are extremely rare
  • • HQ caches only at Geocaching HQ
  • • Event caches count when you attend
  • • Lab caches may or may not count

Fizzy/Jasmer Challenges

Find caches placed in specific months/years or with specific ages.

Examples:

  • • Jasmer: Find a cache placed in every month since May 2000
  • • Find caches from every year since geocaching began
  • • Find a cache placed in your birth month/year

Tips:

  • • Early months (2000-2001) have few surviving caches
  • • May 2000 is the hardest Jasmer month
  • • Travel may be required for early months
  • • Check Project-GC for Jasmer opportunities

Geographic Challenges

Find caches in specific locations, regions, or countries.

Examples:

  • • Cache in every US state
  • • Cache in X number of countries
  • • Find caches in every county of a region
  • • Caches in every state/national park

Tips:

  • • Plan road trips for multiple regions
  • • Border areas great for multi-state challenges
  • • Some require physical caches only
  • • Check for county line caches

Streak Challenges

Find caches on consecutive days or maintain specific patterns.

Examples:

  • • 100 consecutive days with a find
  • • Cache every day for a year
  • • No gaps in calendar for X months

Tips:

  • • Plan ahead for travel days and holidays
  • • Have backup caches identified near home
  • • Power trails useful for maintaining streaks
  • • Lab caches can save a streak in emergencies

General Challenge Cache Tips

Before attempting:
  • • Run the checker first
  • • Read all requirements carefully
  • • Check for date restrictions
  • • Note any cache type exclusions
Common pitfalls:
  • • Lab caches may not count
  • • Events vs. finds distinction
  • • Archived caches may not qualify
  • • Time zones can affect dates