Just stumbled upon the #IronLakeChallenge:

https://rockyourgoal.de/en/iron-lake-challenge

A challenge to run/hike around the 10 largest lakes in your state. In my case (#IronLakeChallengeNiedersachsen), it's ~145 km to get a medal, with the longest trip being ~30 km around Steinhuder Meer. Certainly sounds fun!

#running #hiking