First, HUGE thanks to ganja1447 who owns the first 360 challenge, which is in Sweden. 360 challenge in Sweden.
Rules: To be allowed to log this cache, you will have to fulfill a requirement. The requirement is to have logged at least on cache for each degree interval around the Challenge cache. Only caches within Colorado count. All cache types including Events may be used, including archived caches. For caches which do not have it's final coordinates where the cache is plotted, for example Unknown caches, the coordinates where they are plotted on the map are those that counts. Not the final the coordinates.
In other words, you must at least one cache, of any type which is within 0-1 degrees bearing from the Challenge cache itself, within Colorado. And at least another one for 1-2 degrees bearing and so on, up to the 359-360 degrees span. You will need at least 360 logged caches to reach the requirement.
Help: tool There is a tool available to help you find what degrees you have and which you need, you can check it out at Project-GC Link to Checker for this Cache.
It should give you all the help you need. Naturally, if you wish to utilize your own method to record your compliance with the cache, please post the details of your process and it's all good. IF YOU ELECT TO PROVIDE YOUR COMPLIANCE METHOD IN A MANNER NOT EASILY DECIPHERED, BE PREPARED TO EXPLAIN IT FOR CLARITY, OR YOUR LOG WILL NOT BE VIEWED AS VALID.
Your log: You do not have to write anything special in your log as a proof although we would LOVE it (completely optional!) if you would post a pic that shows you meet all the degrees. It would also be fun if you DON'T meet the requirements, if you'd like to post a pic (again completely optional) for where you are in terms of accomplishing the Challenge when you first hear of it.
Sister caches: There are plenty of 360-challenges all over the world today. Ganga1447, the creator of the original Challenge, maintains a bookmark list that should include them all, Worldwide Sister Cache Bookmark.
Five local geocachers already have completed all degrees and are qualified for this Challenge. Five more are within a couple of degrees. We are currently above 300 degrees and our progress is the background photo for the cache.