Great Group Rides: Dutch Diesel Cycling Group Ride

ZWIFT COMMUNITY | on May 13, 2020 by Zwift
Great Group Rides: Dutch Diesel Cycling Group Ride
About The “Great Group Rides” Series

Zwift has always been about connecting cyclists from around the world, and since early beta days volunteers from the Zwift community have helped make that vision a reality by leading group rides on the platform.

Nowadays, the calendar contains hundreds of weekly events, but we still rely on community leaders to organize and lead most of the social rides.

One way to show our admiration for these tireless leaders is to highlight the great work they’re doing, week in and week out. And that’s what the Great Group Rides series is all about! Each post focuses on a popular, long-running group ride led by community volunteers. We hope you enjoy this glimpse into the stories and people behind the rides.


The Dutch Diesel Cycling Group Ride rolls like a truck – a little slow at the start, but once up to speed, it’s a powerful force.

There are actually two of these rides each week on Zwift: one on Tuesday, the other on Thursday. Tuesday’s ride is more popular and rolls a bit faster. Leader Erik Hofman says the goal of the ride is “to push riders to the next level in an encouraging environment riding fast as a tight group and avoiding riders off the front.”

Quick Details
  • Schedule: every Tuesday starting at 6:30 Pacific time
  • Length: 55-60 minutes depending on the course
  • Pace: between 2.5 and 2.9 w/kg for the leader, lightweight riders might average 3.2
  • Routes: flat routes like Watopia’s Waistband and Volcano Flat, to help keep the group together

Ride Feel

The ride begins with a 10-minute warmup before ramping up to the advertised pace. For the leader, that’s 2.5 to 2.9 watts per kilogram, and Erik notes that lighter riders might average 3.2 w/kg instead. Average speed for the ride is a brisk 25.8-26.2 miles per hour (41.5-42.2 kph).

“As the ride leader I keep the pace steady and try and manage the riders up front not to push the pace higher,” Erik says. “The fence is used at 2 seconds to aid in that, but even without the fence we successfully keep a big group of riders together.”

This ride is a “drop ride,” meaning that the group will not slow for dropped riders or try to help them get back on. There is a co-leader with the red sweeper’s beacon who rides at the back, but that person doesn’t fall behind to “sweep” riders to the group. They’ve found that the pace is often too high for the sweeper to bring dropped riders back.

“We encourage and challenge riders in a way that doesn’t turn them off, but makes them want to come back for more,” Erik says.

How It All Began

The group first started in January of 2016 as a ride for “Clydesdales,” a nickname for larger or heavier riders (the term “Athenas” is sometimes used for women). According to Erik, the first ride only had one other person! Here’s what he says happened next:

“We quickly started to grow, and Mike Wepplo was a regular that became my backup leader, taking the B group if we split apart. This was all on Richmond as that was the only flattish course, and we would ride 30 miles, no beacons, no event module, all organized through a Google calendar. When the event module started and we got our own kit in the game, we grew bigger and bigger, and we renamed the rides to Dutch Diesel Cycling rides as we had many non-Clydesdales riders and we felt it was holding back riders from joining us.”

Ride Leaders

Erik Hofman is the main leader, owner, and founder of Dutch Diesel Cycling. He started the Tuesday ride. The “red beacon” co-leader for this ride is Gert Boer.

Ride leader Erik Hofman (far right) in Tahoe

The Dutch Diesel team hosts multiple rides at various paces throughout the week. Their team now includes seven leaders:

  • Erik Hofman, 50, with 15,000+ miles ridden on Zwift, leads the Dutch Diesel Cycling Group ride (B) on Tuesday. Hofman grew up in the Netherlands and now lives in the United States in California. He has been cycling regularly since 2000 and raced five years as an amateur Cat 4 in the Northern California Nevada Cycling Association (NCNCA). He is now a USAC Level 3 licensed coach.
  • Gert Boer, 56, with 19,000+ miles on Zwift.
  • Mike Wepplo, 55, who has ridden more than 27,000 miles on Zwift, leads the Dutch Diesel Cycling Group ride (C) on Thursday.
  • Sam Essfahini, 42, with 17,000+ Zwift miles, is a woman who leads the Dutch Diesel Cycling Dames ride on Monday.
  • Ryan McGee, 32, with 13,000+ Zwift miles
  • Gerry de Bruijn, 47, with 9,000+ Zwift miles
  • John Cole, 57, with 11,000+ Zwift miles, leads the Dutch Diesel Cycling Weekender ride on Friday morning.

Learn More

If you want more information on Dutch Diesel Cycling and their rides, be sure to visit their Facebook group.