noun - A diamond swim is the 75th solo swim of the same course by the same individual.
Bill Welzien completed his 12.5-mile (20.1 km) Diamond Swim around Key West in 2016.
- Bill Welzien Goes For His Diamond Swim
- Bill Welzien Accomplishes #73 Around Key West
- Swim Around Key West
- Marathon Swimming
- Open Water Swimming
- The Long And Short Of Island Circumnavigations
- World Open Water Swimming Association
- World Professional Marathon Swimming Federation
- Bill Welzien Swimming Towards Key West
- #75 Diamond Swim Is In The Books