Breaking 100 kph in Zwift

Having completed my Zwift Masochist badge, the obvious one to do next was the 100 kph Extra Credit badge. I already knew that the best place to do it was on the descent down from the Radio Tower. I’d tried it a few times before but could never get over 97 kph. As it turns out, you need a little help and the Aero Boost Helmet Power-up is the best way to do it.

Top Tips to get the 100 kph Badge

  • Select the Mountain 8 Route in Watopia.

  • After around 400 metres you’ll pass through the Downtown start/finish arch. This normally gives you a Power-up. If you get the Aero Boost Helmet, carry on. If you don’t get it, stop the ride, start again and keep trying until you get the helmet. I got it on my 6th attempt.

  • At 12km into the Mountain 8 route you’ll get to the top of the Radio Tower. Stop here and have a rest.

  • For the descent you’ll need a heavy bike. I chose the Zwift TT frame with the Zipp 808 wheels.

  • Continue round the loop at the top of the Radio Tower loop, gradually picking up speed. Keep accelerating down the first part of the descent. When you get to the bend (at 12.8 km) hit the Power-up button and give it everything you’ve got. This will give you the boost you’ll need to get you over 100 kph.

Other Notes

  • Check your own weight in your profile before starting off. I discovered that my Zwift weight was showing lower than my real weight. I hadn’t updated it after Christmas :-). Be sure to correct your weight if it’s understating it.

  • When I first attempted it using the tips above I pressed the Power-up button too early and just missed the badge. I’ve heard of different people pressing it at different points on the descent. It’s probably also related to how much power you’re putting though too.

  • You notice that my cadence is going crazy for the first few seconds in the video. It always does that after I’ve stopped and re-started and likely a faulty cadence monitor. It doesn’t affect the speed on the descent though. The horrible cranking sound is what my bike does since the Mascochist badge. Time for a service I think.

Comment below if you have other tips for breaking 100 kph.