Ronald Dalmacio Re-Breaks National Age Group Record in 100 Yard Backstroke

Above video courtesy Ronen Tivony,

Courtesy: Ronen Tivony

Courtesy: Ronen Tivony

Rose Bowl 10-year old Ronald Dalmacio broke the National Age Group Record in the 100 yard backstroke for a second time in finals of the Southern California Swimming Club Championships on Sunday.

After posting a 59.76 in prelims, Dalmacio came back with a rocking 59.05 in finals to blow away his own record. The previous record was a 59.81 done by Destin Lasco in 2012.

Comparative splits:

  • Lasco ’12 | 29.13/30.68 = 59.81
  • Dalmacio AM | 29.56/30.20 = 59.76
  • Dalmacio PM | 29.29/29.76 = 59.05

After his prelims swim, we commented that Dalmacio hadn’t shown quite the same front-end speed as Lasco had at this age, and while in finals he was still a tick slower, going under 30 seconds on both halves of this 100 backstroke is unprecedented in the 10 & under age group.

The video above shows that while Dalmacio is big for his age, he’s by no means a towering giant. He has a very long, smooth stroke as compared to those around him, and looks especially comfortable through his turns.

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Lane Four
5 years ago

WOW!!!!!!! No other words are necessary!

5 years ago

with that close of splits I see a bright future of 200 back for this kid. impressed

5 years ago

His technique is stupidly good for his age. How tall is he?

Lane Four
Reply to  WTF
5 years ago

I agree. He reminded me so much of Kristina Egerszegi. Plus the power he has off the walls is incredible. Loved it.

About Braden Keith

Braden Keith

Braden Keith is the Editor-in-Chief and a co-founder of He first got his feet wet by building The Swimmers' Circle beginning in January 2010, and now comes to SwimSwam to use that experience and help build a new leader in the sport of swimming. Aside from his life on the InterWet, …

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