Welcome to the

Great Ohio

County Century Challenge!


This is a series of challenge caches across the state each with the challenge of finding 100 caches per county.

We are currently in the process of developing the caches across the state, and you can see what counties are currently available below.


To view the current counties available in the challenge on geocaching.com please click here:

Ohio County Century Challenge (geocaching.com)


*counties listed in RED in the map indicate an Ohio County Century Challenge cache is published for the county.

*counties listed in PINK in the map indicate an Ohio County Century Challenge cache is being built for the county.

Adams Allen Ashland Ashtabula Athens Auglaize Belmont Brown
Butler Carroll Champaign Clark Clermont Clinton Columbiana Coshocton
Crawford Cuyahoga Darke Defiance Delaware Erie Fairfield Fayette
Franklin Fulton Gallia Geauga Greene Guernsey Hamilton Hancock
Hardin Harrison Henry Highland Hocking Holmes Huron Jackson
Jefferson Knox Lake Lawrence Licking Logan Lorain Lucas
Madison Mahoning Marion Medina Meigs Mercer Miami Monroe
Montgomery Morgan Morrow Muskingum Noble Ottawa Paulding Perry
Pickaway Pike Portage Preble Putnam Richland Ross Sandusky
Scioto Seneca Shelby Stark Summit Trumbull Tuscarawas Union
Van Wert Vinton Warren Washington Wayne Williams Wood Wyandot

 *counties listed in RED in the table indicate a Ohio County Century Challenge cache is available for the county

If you're interested in creating an Ohio County Century Challenge cache for your county, please email us at This email address is being protected from spambots. You need JavaScript enabled to view it.


Counties Completed Leaderboard


This leaderboard is periodically updated.

It lists the current TOP 10 finders of Ohio County Century Challenge caches including ties.

Owned caches in the series are counted as a find.

For an up to date count of finds (not including owned caches) for all finders of the series, please click here:

------------>Project-GC Leaderboard<-----------


# Cacher Name: Finds:
1 SerenityNow 38
2 gmarkusic 34
3 bobbo12164 32
4 CarpenterLuvaKatCrew 28
5 captphil 20
6 caretaker5 19
t7 Cacheman44 18
t7 PWNC 18
9 grandfolks 17
t10 **MANY CACHERS** 16