Search
shop

Tonight’s Zwift Group Workout Series: 40/20’s FTP Booster

Join us at 7pm, UK-time tonight on Zwift for the TRI247 Group Workout Series. Here are the details of the 40/20's FTP Booster session
Chief Correspondent
Last updated -

TRI247 Workout Series #89 – 40/20’s FTP Booster

Wednesday, 18th September 2019 7.00pm UK time on Zwift

(ZWIFT LINK >>> https://zwift.com/events/view/221518)

Here are the details for tonight’s TRI247 Workout Series session on Zwift, the 40/20’s FTP Booster.

Join us for an hour of quality, structured training – suitable for athletes of all abilities. The session has been set by and will be lead tonight by TRI247 Editor, John Levison.

The 40/20’s FTP Booster session

The workout is based around four sets of ’40 seconds on, 20 seconds off’ intervals, each separated by five minutes recovery. When ‘on’ you’ll be working well above FTP power, approaching VO2 Max levels, before a short recovery and repeat.

Starting with 10 reps, subsequent blocks will be eight, six and four respectively… but with the accumulated fatigue, will the session get easier or harder as we progress through the hour? Join us and find out!

TRI247 Workout Series - 40/20's FTP Booster

TIP – It is always worth having the (free) Zwift Companion app to hand on your mobile device. Within the workout screen you can toggle your FTP by +/- 10% ‘on the fly’, which will immediately change your power targets during the session. Legs feeling heavy, can’t quite hold your power targets? It happens! Rather than can the session, how about moving your targets down 5% first, before giving up completely? Alas, the body isn’t a machine and can’t always deliver as you hope/think it should, so a bit of flexibility and not getting too obsessed with the numbers can be a good thing!

Zwift Companion app FTP Bias

On the flipside, perhaps you are having a good day or increasing the overall training stress of the session better meets your own training goals for that day? In that case, you have the option of nudging your baseline up too in the same way.]

Join us at 7p.m. on Wednesday 18th September 2019 (UK time) for another quality workout. Set your reminder now on the link below or via the Zwift Companion app.

The session is genuinely open to everyone of ALL abilities. Group workout mode works fantastically in Zwift and ensures that the power targets are tailored to YOUR level. It makes no difference if your FTP is 400 watts or 100 watts, the targets you see will be specific to you – all while being part of the on-screen group.

[To set your reminder, click here: https://zwift.com/events/view/221518]

You can find the custom workout files from all of the previous TRI247 Workout Series sessions on these links, to download and do ride again in your own time:

Custom Workout downloads from previous Zwift sessions:

Joining Instructions:

The workout will begin promptly at 7.00pm UK time, Wednesday 18th September 2019. It is worth logging in 10 or 15 minutes before the session to make sure you are set up and ready to go, where you will be able to warm up in the virtual ‘holding pen’.

https://www.youtube.com/watch?v=XNTXAkky4qE

Look for the TRI247 Workout Series event in the list on the right of the screen once you have paired your sensors. Click to JOIN and you will be taken to the start line ready to begin the workout.

Make sure you have set your FTP level correctly before you join the workout as all the intervals are based on a percentage of FTP so it is important to get that right. If in doubt, dial the FTP number down 10 or 20 watts as it is better to finish the session than to feel like it is too challenging.

If you have never used Zwift before but don’t want to miss out, head to the Zwift support page for tips on how to get the most out of your setup.

After the session head over to the TRI247 Facebook page for some post ride chat.

Zwift Group Rides: TRI247 Workout Series

The cool thing about a group workout on Zwift is that varying levels of ability can ride together in a group and all finish the session together having done the same relative effort, even if the actual watts are significantly different. It is not a race, but a shared goal to get a good session in the training log.

John Levison
Written by
John Levison
TRI247's Chief Correspondent, John has been involved in triathlon for well over 30 years, 15 of those writing on these pages, whilst he can also be found commentating for events across the UK.
Discover more
Challenge Family Jort Vlam CEO
“It’s not just for nutty people who train 40 hours a week!” Jort Vlam on taking triathlon mainstream and why he’s still inspired to keep growing the sport
Chain hanging to dry after waxing
PremiumSwitching to a waxed chain could take minutes off your Ironman bike split, without riding any harder – and here’s why
PremiumAre women better than men at long distances? We uncover the truth once and for all
Castelli Aero Pro 8S women's cycling jersey
Castelli Aero Pro 8S cycling jersey review: can this ultra-aero jersey turn watts into speed without dialling down on comfort?
Sian Rainsley Vitus
PremiumThreshold or VO2 max? The best type of intervals for triathletes who want to get faster
latest News
Hayden Wilde wins T100 London 2025
T100 London men’s results 2025: Hayden Wilde wins in one of the GREATEST EVER sporting comebacks
Lucy Charles Barclay wins T100 London 2025
T100 London women’s results 2025: FAIRYTALE win for Lucy Charles-Barclay in front of home fans
Lucy Charles Barclay finish line T100 London 2025
WATCH AGAIN as LCB and Wilde claim incredible wins at T100 London 2025
Lionel Sanders wins 70.3 St George 2025 photo credit Getty Images for IRONMAN
Lionel Sanders on his way back – but Nice too soon so sights set on new targets
Adam Peaty photo credit Aquatics GB
Gordon Ramsay, Adam Peaty and Harry Judd face Olympic challenge at T100 London
triathlon on your terms
Never miss out with our triathlon alerts & digest. Get a dose of adventure & inspiration with Boundless.
The 247 Group

The home of endurance sports

TRI247-LOGO_Primary-Black_RGB-1

CHOOSE YOUR MEMBERSHIP TO BECOME PART OF SOMETHING EPIC

We’re on a mission to elevate the world of endurance sport, becoming your go-to resource for expert training tips and inspiration, unbiased reporting and creating a platform for grassroots voices. But we can’t do it without you on board! Choose a TRI247+ membership option below and become part of something epic.

All plans include a 7-day free trial

£7.95/month

Unlimited access. No ads. A whole library of tips, advice and inspiration at your finger tips, and the chance to shape the future of triathlon journalism.

100+ new articles/month

You’ll also gain access to our other premium websites:

Have an account? Sign in

All plans include a 7-day free trial

£47.95/year
£95.40/year

50% Discount

100+ new articles/month

Unlimited access. No ads. A whole library of tips, advice and inspiration at your finger tips, and the chance to shape the future of triathlon journalism.

You’ll also gain access to our other premium websites:

Have an account? Sign in

Share to...