Watch Miriam Sheehan Lower 9-10 100 Back NAG Record Under 58s (Video)

As reported by SwimSwam’s Jared Anderson:

Phoenix Swim Club’s Miriam Sheehan is in her very last meet as a 10-and-under, but she got in just one day before her birthday, destroying the 100 yard backstroke National Age Group (NAG) record by almost two seconds.

Sheehan went 57.96 to win the 100 back at the 2015 Fall Meet #1 in Paradise Valley, Arizona, breaking the NAG record by a wide margin.

Sheehan turns 11 tomorrow, but gets to swim out the remainder of this meet in the 10&Under age group.

Today’s result gives her three short course NAGs in the 10-and-under bracket to go along with her five long course records.

She breaks the old 100 back NAG of 59.89 set by Regan Smith back in 2013, taking nearly two seconds off that time. Her 50 split of 27.76 – to her feet at the flip turn – would have broken Smith’s NAG as well, had Sheehan not already taken down that mark last weekend. Smith’s record was previously 27.79; Sheehan went 27.27 last week.

Sheehan now owns 10-and-under short course NAGs in the 50 fly, 50 back and 100 back. She holds long course records in the 50 free, 50 back, 100 back, 50 fly and 100 fly.

She swam (and won) the 100 free and 50 back earlier in the meet, just missing her NAG with a 27.33 in the back and going 55.53 in the free.

She’ll swim the 100 fly, 50 fly and 200 IM later on in the meet.

Full results are available on Meet Mobile.

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Wow. Terrific swim. Her underwaters are unreal.


Miriam, you are amazing! I’m so proud of you! Congratulations on another successful day and HAPPY BIRTHDAY on 9/20.


Stupid yard, it’s 2015, all the world using LCM and SCM!!!


She’s 10, give it a break


She owns meter events too.

bobo gigi

It’s 2015 and British people still drive on the left of the roads….

About Tony Carroll

Tony Carroll

The writer formerly known as "Troy Gennaro", better known as Tony Carroll, has been working with SwimSwam since April of 2013. Tony grew up in northern Indiana and started swimming in 2003 when his dad forced him to join the local swim team. Reluctantly, he joined on the condition that …

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