|Montana, Montana, Montana, 59001, United States|
|Swimming: Stroke 100s + 200IM, Stroke 200s + 400im, Stroke 50s + 100IM|
|Sunday, January 1st, 2017 - Friday, December 15th, 2017|
Postal Swimtathlon League is a year-long, postal pentathlon event where participants swim and submit times in the quarterly stages (Short, Middle, Long, Cumulative). Five events are included in each pentathlon stage (Fly, Back, Breast, Free, and Individual Medley), and cumulative times are used for league standings and results. A portion of each entry fee will be donated to the Flathead Lake Swim Guide project to sample and monitor the recreational water quality of Flathead Lake.