An Olympic Triathlon is a 51.5 kilometers long race, with a 1.5K swim, a 40K bike, and a 10K run. For elite women, breaking 2 hours in the distance is a great time. At the 2016 Rio Olympic Games, Gwen Jorgenson from the U.S.A. won in just 1:56:16. Her swim time was 19:12, with a 56 second transition to biking. Her bike time was 01:01:21, with a 38 second transition to running. Her run time was 34:09.
For elite men, breaking 1:50 is a great time. At the Rio Olympics, Alistair Brownlee from Great Britain won in 1:45:01. His swim time was 17:24, with a 50 second transition to biking. His bike time was 55:04, with a 34 second transition to running. His run time was 31:09.
For an amateur athlete, breaking three hours is a great first goal and a great time. Amateur athletes should focus on keeping their first transition under 1:30 and their second transition under 1:00. Their swim time should be less than 35 minutes, their bike time less than an hour and 35 minutes, and their run time should be less than 50 minutes. With those times, they would break three hours!