A loop around Sweden's 3rd largest lake, "Mälaren".

https://en.wikipedia.org/wiki/M%C3%A4laren?fbclid=IwAR3ZLpvOHRurNY7MNRrIs4KJUqWyJzwlOe1naUNqDbIK091mbF5RmB2Zhdo

Distance: About 340 km / 210 miles

A standardized route across the island. Launched by the National Parks Board of Singapore on the 30th of March 2019, it is officially 36km long.
Official page with links to the trail guide and app here - https://www.nparks.gov.sg/gardens-parks-and-nature/parks-and-nature-reserves/coast-to-coast
 

--submitted by Toh Wen Sheng

Climb and descent of the famous Mont Charvin, in the Aravis Range in Savoie, France.

6.97 kms; 1,056 m elevation gain

- Submitted by Antoine Meunier