This series of 65 puzzle caches has been placed to celebrate the London 2012 Olympics and Paralympics. Each ring is set by different cachers and contains 11 or 12 hides plus a bonus. The whole design is over 4km across. You will need to find all caches for a ring in order to find the bonus and complete the ring.
There are three Medal caches above the rings, Bronze, Silver and Gold. See the Bonus cache descriptions for how to find them. See the Gold Medal cache page for full series credits.
The Sussex Olympics Rings Team is: NogNod, Tootsie's Trackers, Cachedragon, Martletsman, ProfTonks, AnTsInRpAnTs & Lost!
This series is now featured in issue 10 of The Seeker the magazine of the Geocaching Association of Great Britain. See this link
You can do all the black ring caches in a single walk. It's not a loop, but it should link with caches in the yellow and green rings. If you do the black ring caches in reverse order, you'll have to double back for the bonus.
PUZZLE
For six summer games in a row, (i.e. for 20 years), first and second place in the gold medal table was taken by the USA and the USSR. They just kept switching between who was first and who was second. How many gold medals did these two superpowers win in total in those six games.
Answer ABC
Co-ords N51 0C . (B-C)(A+B)(A+A) , W 000 0(A+2) . (C-1)(A+C)(A+B+C)