IMX/IMR Information

USA Swimming

What's IM Xtreme(IMX)?

IM Xtreme(IMX) is a program designed to motivate swimmers by allowing them to compare their times to those of other athletes in their age group across the United States. By swimming a specific set of events at least once per season, a swimmer can receive an IMR/IMX score based on power points, a system developed by USA Swimming.. This is a great way for swimmers to track their progress and compete on a national level.

What's IM Ready (IMR)?
Not Ready For IMX? Try IMR.

IM Ready is a program similar to IM Xtreme that is designed for younger swimmers. If you find 200 yards to be a challenging distance, you can start building your skills by swimming shorter distances and tracking your progress with IM Ready. This is a great way to improve your endurance and prepare for longer races.

IM Xtreme Program Details

IM Ready (IMR)

The first pharse of the IMX Challenge is called IM Ready( or IMR) and involves swimming a series of five events at shorter distances. Scores are calculated for both male and female swimmers in the following single age groups and event combinations:

9 & Under, 10-year olds: 100 Free, 50 Back, 50 Breast, 50 Fly, 100 IM (SCY) or 200 IM (LCM)
11-year olds, 12-year olds: 200 Free, 50 Back, 50 Breast, 50 Fly, 100 IM (SCY) or 200 IM (LCM)
13, 14, 15, 16, 17, & 18-year olds: 200 Free, 100 Back, 100 Breast, 100 Fly, 200 IM

IM Xtreme (IMX)

The second phase of the IMX Challenge is called IM Xtreme (or IMX) and consists of swimming a series of five or six events at longer distances. Scores are calculated for both male and female swimmers in the following single age groups and event combinations:

9 & Under, 10-year olds: 200 Free, 100 Back, 100 Breast, 100 Fly, 200 IM
11-year olds, 12-year olds: 400 Free (LCM) or 500 Free (SCY), 100 Back, 100 Breast, 100 Fly, 200 IM
13, 14, 15, 16, 17, & 18-year olds: 400 Free (LCM) or 500 Free (SCY), 200 Back, 200 Breast, 200 Fly, 200 IM, 400 IM

Important Note About Scores

All times MUST be achieved in one season and in one course (SCY or LCM)! Both the short course and long course seasons run from September 1 to August 31 for IMR/IMX purposes.

Discover your IMX score and establish goals using the IMX Calculator.

IMX/IMR Rankings

To view your IMX/IMR Rankings, simply visit your profile page. To explore USA Swimming's IMX/IMR Rankings by age, gender, and course (short or long), as well as filter the rankings by Zone or LSC, head to the IMX/IMR Rankings page.

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