Panama holds the Guinness World Record for the longest transcontinental isthmus on Earth, the only land connection between North and South America, stretching 676 km with a minimum width of 50 km.
Record no. MRB-2026-006359
Longest transcontinental isthmus
Reference Record – Not Certified
This record is compiled from publicly available sources for reference. It has not been examined or certified by The Book of World Records.