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    Training & Nutrition

    Zwift Camp: Baseline “Red Zone Repeats” Sprint Test Walkthrough

    Eric Schlange
    By Eric Schlange
    September 18, 2025
    LAST UPDATED September 17, 2025
    3

    Zwift Camp: Baseline is now underway, with several thousand Zwifters participating so far in this assessment-oriented training program.

    I’m one of those Zwifters, and plan to share my experience in four posts – one for each workout in the program:

    • 5-second power (Zone 6+)
    • 1-minute power (Zone 6)
    • 5-minute power (Zone 5)
    • 20-minute power (Zone 4)

    Red Zone Repeats

    The first workout of Zwift Camp: Baseline is all about sprinting. It’s 40 minutes long and consists of a warmup punctuated by 5x 10-second primer efforts, followed by 3x maximal 10-second sprints, followed by a cooldown. In between the important bits you’ve got zone 1 and free riding blocks to keep your legs moving and give you time to ramp up your effort into a maximal sprint.

    I did this first workout as a group ride, just to see what that experience was like and how Zwift had set up the events. (You can also do the workouts as an on-demand activity on your own, whenever you’d like.)

    53 riders were in the event, and I was on my Cadex TT bike because I’m still working on upgrading it to its max level. I was surprised to see that the event didn’t have rubberbanding enabled like you typically see in group workouts, so the group sort of split apart, although people were still blobbed together for the most part thanks to the magic of drafting:

    Since most of the ride is in ERG mode, you can’t really push harder to change your position in the group or bridge up to the next pack. Being on a TT right, my avatar didn’t draft, so for most of the ride I found myself on the front of a small group, pulling them along as we worked our way through the various intervals.

    Overall, I found the workout to be pretty easy – which was a good thing, since my legs were tired from two hard rides the day before. (I can do a few maximal 10-second efforts on tired legs, but I definitely don’t want to do the 5 or 20-minute efforts later in this program unless my legs are fresh!)

    One callout worth mentioning is that Zwift has put a 30-second free-ride block before each of the 10-second sprint blocks. This allows you to ramp up your speed and gearing so you can hit your sprint section in a high gear, ready to put out maximum power. (This is especially important for anyone using Zwift’s virtual shifting, since it reverts to gear 8 at the start of a free ride section, and you wouldn’t want to be working your way to the right gear during a short, 10-second sprint effort.)

    For me, that meant shifting into gear 18 when doing out-of-the-saddle sprints, while gear 16 felt good for my one seated sprint attempt. Gearing is extremely important when sprinting, as you need to find just the right mix of torque and cadence to achieve maximum power!

    Watch My Video

    Results

    I completed the Red Zone Repeats route during the cooldown portion of the workout, but it wasn’t until I clicked to end the ride that I was greeted with a few achievement banners:

    I received an email from Zwift, subject line “Power Check Complete ✅”, as soon as the workout was finished. It included a link to my Zwift Camp Dashboard, which now looked like this:

    The dashboard compares your power numbers in the Zwift Camp workouts to your 90-day best numbers. Zwift computed my best 5-second power in the workout as 1032W, which I’m happy with even though their critical power curve for the workout showed 1040W:

    In fact, I set new power bests for 1-10 seconds for 2025 in this workout, according to my Strava power curve. I’ll take it!

    Wrapping It Up

    If you’re looking for a sprint workout, this really isn’t it. Sure, you get a few sprints in, but this is more of a sprint test. The training will come in future Zwift Camps, but for Baseline the goal is for riders to test and establish their power bests. To set baselines.

    Overall, my experience with this first workout was fine, and I appreciate having quick access to my dashboard via the email link and Zwift Companion. There are a few things that would have made the workout itself a bit better, though. Here’s my list:

    • Show me my 5-second power after each sprint effort. Tell me how I’m doing, and give me something to shoot for.
    • Have my result match the critical power curve in the Ride Report screen.
    • Don’t drop me down to virtual gear 8 every. Single. Time. Just return me to whatever my last virtual gear was.
    • The power required at the start of the cooldown ramp should match the power I’m already doing. It always feels like a low blow when I’m spinning easy near the end of a workout, then the cooldown ramp kicks in and asks me to go harder. (For whatever reason, this is a common thing you see on Zwift workouts.)

    Your Thoughts

    Have you done this workout yet? How did it go for you? Share your experience below!

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      Eric Schlange
      Eric Schlangehttp://www.zwiftinsider.com
      Eric runs Zwift Insider in his spare time when he isn't on the bike or managing various business interests. He lives in Northern California with his beautiful wife, two kids and dog. Follow on Strava

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