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Walk around the ten largest lakes in Schleswig-Holstein and earn the coveted Iron Lake Challenge collector’s medal from the “Schleswig-Holstein” edition. Discover this exciting state at its most beautiful—along the shores of its lakes.
Registration an Scope of Services
Registration for the Iron Lake Challenge Schleswig-Holstein costs 24 EUR.
This entry fee includes our Iron Lake Challenge “Schleswig-Holstein” Edition collector’s medal as well as the green marble (20 mm) from the Timeless Challenge.
But first, you’ll have to hike around the ten largest lakes in Schleswig-Holstein! Only then will we send you your well-deserved medal and marble! After all, you want to earn them—not just get them for free.
With your registration fee, you support my passion project of reforestation of one million oft trees
How to register
- Please click on the image and you will be redirected to the registration page of our partner Digistore24.
- You will receive a registration confirmation with all the important information.
- Now you have to walk around the ten largest lakes in Schleswig-Holstein. You can take as long as you need to complete the ten lakes. As proof, you can upload a screenshot of your tracking data to our challenge tool.
- Once we’ve checked your submission, you will get your well-deserved medal and marble. Simple as that, right?
Your medal and your marble
Once you’ve walked around the ten largest lakes in Bavaria, we’ll mail you the beautiful Iron Lake Challenge “Bavaria” Edition collector’s medal and the green marble. This can be the first item in your future Iron Lake Challenge collection.
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The Ten Largest Lakes in Schleswig-Holstein
These are the ten largest lakes in Schleswig-Holstein. Enjoy every minute on the shores of these aquatic gems!
| Lake | Shore length (approx.) |
| Lake Großer Plöner See | 47 km |
| Lake Selenter | 27 km |
| Lake Großer Ratzeburger See | 26 km |
| Wittensee | 20 km |
| Westensee | 20 km |
| Kellersee | 15 km |
| Large inland lake | 18 km |
| Hemmelsdorf Lake | 20 km |
| Windebyer Noor | 12 km |
| Dieksee | 11 km |
Important Links
- Schleswig-Holstein Challenge Tool for Entering Your Rounds
- Genaue Erklärung unseres Tools (.pdf)
- Iron Lake Challenge Schleswig-Holstein Hall of Fame
- Life Lake Museum Overall ranking of the challenge
- Life Museum (Gesamtwertung Timeless Challenge)
- Trees4Breeze – Reforestation and Forest Conservation, Funded by the Timeless Challenge
More Challenge Recommendations
 If cycling is your passion, then cycle around the ten largest lakes in Schleswig-Holstein! |  Discover over 100 challenge ideas with the Timeless Challenge. |  Help a tree grow old in peace with your Trees4Breeze tree partnership! |
