What is the record distance for the longest throw of a frizbee? And what of a boomerang?

The record for longest frisbee throw was set in 2003 by Erin Hemmings it still stands at an astonishing 1,333 feet, more than a quarter mile.

http://www.gizmag.com/go/7171/

The record the longest throw of an object without any velocity-aiding feature is 1,401 ft by David Schummy with a boomerang on March 15, 2005 at the Murrarie Recreation Ground in Australia.”

Here is the video:

https://www.youtube.com/watch?v=LQ5dW5pHPYk

There is no single record distance for throwing a flying disc as various categories are available, according to the World Flying Disc Federation. The current Open record is 338.0m achieved by David Wiggins Jnr (USA on 28th March 2016 at Primm, Nevada. A list of distance records is here:

https://wfdf.sport/world-records/distance