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Killer 3s at Heartbreak Hill Running Company

294 Massachusetts Ave, Cambridge, MA, 02139
Area 2 / MIT

Start taking classes at Heartbreak Hill Running Company and other studios!

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About this class

Don't have a lot of time but need a killer workout? Enter Killer 3s - 33 minutes of alternating treadmill intervals and high intensity floor work. This workout will improve your running form, power and efficiency.

About this studio

Heartbreak Hill Running Company logo
Heartbreak Hill Running Company

Heartbreak Hill Running Company, founded by Boston College track and field co-captains, Dan Fitzgerald and Justin Burdon, is the premier destination for running gear, expert coaching…read more

500+ ratings for Killer 3s

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based on 2,121 ratings

Most recent reviews

Killer 3s with Maria
I felt like I was going to die (so many hills), but it was manageable since everything was in short sprints! Definitely great class.
Killer 3s with Ellen
Ellen is great, love her classes!
Killer 3s with Ellen
Killer 3s with Amy
She isn’t as challenging as some of the other teachers but still a good workout
Killer 3s with Caleigh
AMAZING instructor with great music and contagious positive attitude! Will definitely go back again!
Killer 3s with Caleigh
Packs a punch in 5min running intervals interspersed with 3min running-specific strength. Caleigh is such a positive and encouraging coach!
Killer 3s with Ellen
Ellen is the best! High energy, awesome workout every time. Class always flies by.
Killer 3s with Rachele
Super fun! Not enough direction about how hard to go.
Killer 3s with Rachele
Less than 40 minutes of actual work. Floor work was not challenging. Nowhere near as fun or dynamic as mystryde!
Killer 3s with Ellen
Great class! Hard workout with speed and hills on the treadmill. Full body work lifting. Coach was awesome!!
Friday, May 24
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There are no upcoming “Killer 3s” classes on this day.

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How to prepare

Please bring running shoes and athletic clothing.

How to get there

Please note, this is the Cambridge location, not the Newton location. See you there!


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