This is perhaps the longest throw to dismiss a batsman run-out.
This video is from an Australia vs India encounter during 1999-00 tour of India down under at Adelaide Oval. Devang Gandhi is facing Glenn McGrath with Sadagoppan Ramesh as the non-striker end. He plays a gorgeous off drive to a full length delivery. Greg Blewett, standing at cover point, pursues the ball.
The batsmen think it is an easy 4 runs and let their guard down on the final run. But, Blewett had other ideas. He chased the ball, which was just a few yards from the boundary, steadied himself and threw it back to the bowler’s end, approximately 70 meters away, on the full, catching S. Ramesh napping. Even Blewett may have wondered “WOW!! How did that happen??”.
Watch the video here: