Killer Cardio: 30 Minute HIIT Treadmill Workout

Meredith fires off short bursts of all out, descending speed intervals to kick your metabolism into gear, a serious calorie burner that won't eat your whole day.

Duration32min
SWEAT avg4.0· 88 ratings

Short bursts of "all out" descending speed intervals are just what you need to kick that metabolism into high gear for the day. A great way to get in a killer calorie burner workout in not much time!

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Treadmill

What members are saying

  • Nancy B.Jun 24, 2025

    WOW - I loved this workout! Just getting back to running and this workout is exactly what I needed to get back into it.

  • Angela C.Feb 22, 2024

    Great sprints on the treadmill! The music was great and you made it fly by!!!

  • Kristen M.Jan 6, 2023

    2023 Hell Week oopsy…dropped my phone right after the last 10 second sprint and started my next spin class. Restarted treadmill and fast forwarded to last 6 minutes to complete the class.

  • Gail S.Dec 29, 2022

    love this claSS I WAOUKD LOVE MORE LIKE IT

  • Connie F.Feb 15, 2022

    Thank you for this great treadmill workout Meredith! I love these classes during the Michigan winters!

  • AndyFeb 5, 2022

    Meredith, a very good class with a great format. I am not much of a runner and usually hurt something if I try to sprint so I modified by adding more incline. P. S. Hitting the wrong button (speed vs. incline) happen to me all the time also...🤣

  • DeeDee H.Dec 25, 2021

    SSoD12 day challengeDay#12 workout #12 Thanks Meredith Merry Christmas

  • Andrea P.Nov 17, 2021

    #SSoDDriveto25 #30

  • DeeDee H.Oct 26, 2021

    #SSddrive to 25 #4

  • DeeDee H.Oct 26, 2021

    #SSoDriveto25#4 done ✅ Great quick run workout! Thanks

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