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Zwift Racing League Week 1 Guide: Greatest London Flat (TTT)

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The first race of Zwift Racing League 2025/26 Round 2 happens Tuesday, November 4, and it’s a team time trial on Greatest London Flat. This is a favorite TTT course that has featured in multiple ZRL rounds due to its flat/rolling nature with just enough pitch change to keep us on our toes.

Let’s dig into crucial segments, bike choice tips, and more!

Looking at the Route: Greatest London Flat

Greatest London Flat has been used multiple times as a ZRL TTT course. It takes you around the City of London itself, then over to Surrey with the flattest of the three paths through before taking you back to London to finish on The Mall.

Total ride length is 31km for all categories – that’s a 7.4km lead-in to The Mall followed by a 23.6km lap. Here are some classic notes from Sherpa Dave:

While the profile above may look rather lumpy, this is a fairly flat course, with just a few important bits (climbs) worth mentioning:

  • Northumberland Ave @3.6km (150 meters at 4%): your first ramp of the race, and you’re still in the lead-in portion! Give it the beans, but don’t drop anyone. Recovery is just around the corner…
  • Surrey Parkland Ramps @18.3km (3km long): the toughest part of the course, this series of long rollers forces you to keep the power high if you want to maintain race-winning speed!
  • Ramp up from the Underground @22.5km: teams can lose several valuable seconds by attacking this one incorrectly! You want to ramp up your power heading into this steep, short ramp so you carry more momentum, then keep hammering hard over the top to get back up to speed.
  • Northumberland Ave again @27.2km (150 meters at 4%): with just a few kilometers left, you may have lost a rider or two at this point. Make sure you stay together so you can pull hard to the line.

Also worth noting: in between the key climby bits above you’ll find a light of slight inclines and declines. Riding these smartly can make a big difference in your overall time! That means going harder on inclines, and easing a bit for recovery on the declines. Raising your trainer difficulty to 100% may help your team feel the slight gradient changes more uniformly so you all react appropriately.

Read more about the Greatest London Flat route >

Bike Frame + Wheel Choice

Bike choice here is simple: go aero. On a flat route like this, weight doesn’t matter much, and aero is everything! The best setup by far is the CADEX Tri frame paired with the DT Swiss Disc wheels, but you’ll need to be at level 40+ to access this sweet rig:

CADEX Tri + DT Swiss Disc wheels

If you don’t have access to this setup, check out “Fastest TT Bike Frames and Wheels at Each Zwift Level” and use the fastest TT frame and wheelset available at your level.

One more note on bike choice: upgrading your frame makes a big difference. A fully upgraded frame saves around 13 watts, or ~48 seconds per hour of riding. Read all about the performance improvements you receive from upgrades here.

More Route Recons

Many recon rides are planned each week on the upcoming ZRL route. If you’re unfamiliar with this course, jump into an event and familiarize yourself with the route! Find a list of upcoming ZRL recon rides at zwift.com/events/tag/zrlrecon.

Additionally, riders in the Zwift community do a great job every week creating recon videos that preview the courses and offer tips to help you perform your best on the day. Here are the recons I’ve found (comment if you find another!):

J Dirom

Nathan Krake

John Rice

TTTips

Successful team time trialing on Zwift requires a challenging combination of physical strength, proper pacing, and Zwift minutiae like picking a fast bikeunderstanding drafting in a TTT context, and getting your frame fully upgraded.

Flatter courses like this week give valuable seconds to teams with big pure-power riders who can keep their power high on the front while staying in single-file formation to conserve in the draft behind. Extra seconds can also be gained by pacing smartly, ramping up the effort on short climbs and recovering a bit once you’re up to speed on the short descents.

On a course like this week’s, I highly recommend all team members set their Trainer Difficulty to the same value so you’re all feeling the gradient changes similarly. (When one rider has it set to 100% and another 25%, the first rider may ramp up power much more than the second when a climb hits, which can make a mess of your team formation.)

Your goal in a ZRL TTT is to get four riders across the line in the shortest time possible. That means every team’s pace plan will differ based on each rider’s abilities. I highly recommend having an experienced DS on Discord directing your team, especially if your team contains some inexperienced TTT riders.

Lastly, if you want to go further down the TTT rabbit hole, I highly recommend Dave Edmond’s Zwift TTT Calculator tool.

Questions or Comments?

Share below!

The History of Bike Racing in Prospect Park, and How It Inspired Virtual Cycling

The History of Bike Racing in Prospect Park, and How It Inspired Virtual Cycling

When Zwift co-founder Jon Mayfield reached out asking if I’d like to consult on the development of a new virtual Prospect Park, I jumped at the opportunity. My history with Zwift and Prospect Park spans decades, so it was a perfect match.

I was Zwift’s former VP of Events — Eric Min (who I raced with as a junior!) invited me to join the company when it was still a scrappy startup. My Zwift ID is 7 — that’s how early I came aboard.

And in the real world?  I’ve been racing in Prospect Park since I was 8 years old, and I organized IRL races there for 17 straight years — more than 150 races total.

So yes… this project felt meant to be.

Kissena members handing out race numbers at 5am registration.

Where It All Began: Kissena Cycling Club & Grassroots NYC Racing

Organized racing in Prospect Park has always been a community-driven effort. The sport owes much of its existence to the Kissena Cycling Club — and three individuals who kept NYC racing alive for the last 40+ years.

To honor them, Zwift named three virtual Prospect Park routes after those IRL legends:

• Al Toefield → “Toefield Tornado
• Greg Avon → “Avon Flyer
• Charlie Issendorf → “Issendorf Express

Each played a unique role in keeping the heart of Brooklyn bike racing beating.

The People Behind the Pedals

Al Toefield — The Founder of the Movement

In 1963, Al Toefield founded the Kissena Cycling Club in Queens, New York. A former Sergeant in the NYPD, he began organizing races in Prospect Park in the early 1970s.

At the time, the park was surrounded by rough neighborhoods and had a reputation for being unsafe. City officials approached Al with a challenge: Bring life back into Prospect Park. Show the public it can be used for healthy, positive activity.

Al delivered. He built a racing culture from the ground up, keeping events running until he passed away in 1989. His impact still shapes NYC cycling today.

Greg Avon — The Relentless Builder

Greg Avon (the one not in kit) with the Kissena Team.

When Al passed, the baton was handed to Greg Avon, currently a Level 100 Zwifter and still as passionate as ever.

Greg served as Kissena President and Race Organizer through 2005 — a remarkable run that spanned more than 15 years of early-morning races, unpredictable logistics, and unwavering commitment.

He modernized the process, expanded participation, and ensured the scene continued to grow.

Charlie Issendorf — Keeping the Tradition Alive

Me announcing race results on the PA.

After Greg stepped away, I took over as Race Director, and for 17 straight years, I kept the tradition going — adding Sprint and KOM competitions with leader jerseys to give the races a true pro feel.

Those events weren’t easy — yet seeing hundreds of cyclists lap the park at sunrise made every sleepless night worth it. Knowing Zwift has now immortalized those efforts with the Issendorf Express route is truly special.

Fun Facts About IRL Prospect Park Racing

  • Races start at 6:00 AM — sometimes in complete darkness.
  • Everything must be wrapped up by 8:00 AM before the park becomes crowded.
  • Race organizers wake up at 2:00 AM — yes, you read that right — to set up the course.
  • Riders start picking up numbers at 5:00 AM (headlights and coffee mandatory).
  • At least 25 course marshals are needed for every race, spaced every 100-200 meters for safety.
  • The IRL course includes a KOM sprint, just like Zwift.
  • The Kissena Cycling Club still runs these events today — one of the oldest active cycling clubs in the U.S. — and they even have a Kissena in-game kit on Zwift.
  • Francesco Moser raced in Prospect Park — Yes, that Moser! The 3-time Paris-Roubaix winner, Giro d’Italia champion, and World Hour Record holder was in Brooklyn promoting his wine when a Kissena rider jokingly invited him to race in Prospect Park the next morning. Moser said yes — as long as they could find him a bike and a kit. They did… and the rest is history! Read the full story here.

Prospect Park racing demands teamwork long before the peloton even clips in.

From Brooklyn to the Metaverse

Indoor cyclists around the world can now experience the spirit of Prospect Park — from the sprint and KOM points to the serenity of sunrise through the trees — thanks to Zwift’s virtual version.

The landscape may be digital, but the heritage is as real as it gets. Zwift has created a living tribute to grassroots organizers, volunteers, and racers who kept the tradition thriving — year after year, lap after lap.

Why it Matters

Cycling culture isn’t built only on WorldTour finishes — it grows in local parks, driven by people who show up before dawn to make the sport available to others.

Prospect Park is proof that big racing hearts beat in everyday places.

From Al single-handedly running races in the 1970s to thousands of riders on Zwift today — the legacy continues to roll.

And if you ever jump on virtual Prospect Park and ride one of those named routes — know that each one celebrates someone who made cycling in Brooklyn possible.

See you on the Issendorf Express. 🚴‍♂️✨


“Big Apple Badge Hunt” Challenge Launched

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“Big Apple Badge Hunt” Challenge Launched

Today, Zwift launched a new “Big Apple Badge Hunt” mini-challenge featuring four routes from the New York map expansion that also launched today. Ride all four routes to complete the challenge and earn XP bonuses! Read on for details…

Challenge Requirements

The Challenge features four routes from today’s New York map expansion. The routes are sorted by length on the challenge screen, but you can do them in whatever order you’d like:

  • Green to Screen (28.4km, 207m): perhaps the best route for seeing most of NYC’s new roads within an hourlong ride, as it covers nearly every bit of new tarmac from Times Square south.
  • Watts the Limit (31km, 219m): an out-and-back course that begins in Central Park and travels south to loop around Grand Army Plaza and return by the same roads.
  • Spinfinity Ultra (35km, 291m): almost like two laps of Spinfinity, except you cross the bridges in a different direction on the second lap.
  • Double Parked (42.2km, 330m): begin with an almost complete lap of Prospect Park, then head all the way up to do a lap of Central Park before coming back down to finish that Prospect Park lap.

Challenge Rewards

You will receive a 500 XP bonus for each route you complete in the challenge. (Keep in mind, if this is your first time riding each of these routes, you’ll also receive an XP bonus for earning that route’s achievement badge.)

Read more about Zwift levels and unlocks >

Joining the Challenge

To join the Challenge, just click its card on the home screen. If you return to the home screen after doing this, you’ll see the card now shows your progress. If it’s showing your progress (0/4, 1/4, etc) you know you’re signed up!

Once you’ve joined the Challenge, completing one of the Challenge routes in any sort of activity (free ride, workout, group ride, race) will mark the route as completed and earn your bonus XP.

Stacking Rewards

Pro tip: “stacking” mini challenge requirements lets you earn bonus XP even faster. For example, you could ride The Ultimate Warmup from the FTP Check Challenge on one of the routes for this challenge and get credit for finishing both!

Deadline

This challenge is live from October 27-December 31. (We recommend finishing before the final day, though, as the Challenges sometimes end at an unexpected time on the last day.)

Questions or Comments?

Post below!