Facility Notices: The Longmont Y pool reopens April 16. The Arapahoe Y pool closed for bubble removal, April 24 (noon)-May 2.

Our Ys are open with newly expanded hours. Please check our reopening guide for programs that still require reservations and policies.


Whether you are a beginner or looking to refine your stroke, teen swim lessons are a great place to improve your swimming skills or add swimming to mix up a workout. Swim lessons held in Boulder, Lafayette, Longmont and Johnstown.

Lap swim (for ages 12+) and family swim (Johnstown Y) are available by reservation only.


Water exercise classes are available by reservation only.


Please check our reopening guide for policies before you arrive.

Not sure which lessons to sign up for? Use our lesson flow chart to help you decide.

Swim Lesson Flow Chart


Swim Basics are introductory classes divided into three progressive stages that include the foundations of water safety and basic swimming skills, focusing on swimming to safety. 

Stage 1: Water Acclimation

The water acclimation class introduces swimmers to the pool and helps them develop safe water habits in a fun and encouraging environment. In water acclimation, swimmers develop comfort with underwater exploration and learn to safely exit in the event of falling into a body of water. This stage lays the foundation that allows for the participant’s future progress in swimming.

Stage 2: Water Movement

In this class, swimmers are taught skills that focus on body position and control, directional change and forward movement in the water while also reinforcing how to safely exit in the event of falling into a body of water.

Stage 3: Water Stamina

In the class, swimmers focus on swimming longer distances and are introduced to rotary breathing and integrated arm and leg action. In the event of falling into a body of water, students learn how to swim to safety.


Swim Strokes include three stages that cover introduction and refinement of swimming strokes as well as cultivating a healthy lifestyle.

Stage 4: Stroke Introduction

In this class, swimmers focus on developing basic swimming strokes and personal water safety.

Stage 5: Stroke Development

In this class, students continue to work on their stroke technique and all major competitive strokes are introduced

Stage 6: Stroke Mechanics

In this class, students refine their stroke technique on all of the major competitive strokes and learn about competitive swimming and how to incorporate swimming into a healthy lifestyle.

Registration closes three days prior to the lesson start date to give us time to coordinate each lesson. If you would like to sign up for lessons after registration closes, please call the Aquatics Department to see if space is still available. 

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The YMCA of Northern Colorado is part of the USA Swimming Foundation which strives to ensure that every child has the opportunity to start their own journey to be safer in, on and around the water. 

USA Swimming Foundation

Swim Lesson Coordinator

303-443-4474 ext. 2501
Email Swim Lesson Coordinator

stay in touch!