Stonegrinder Series Launched: Who’s fastest when the road pushes?

The new Stonegrinder Series has just hit Zwift’s race calendar, bringing eight weeks of short races featuring Sprint or KOM segments on Zwift’s brick and cobble surfaces. It’s a unique series in several ways, and the fun begins November 4. Let’s dive into the details!

No Stone Left Unturned

Each round features just one designated segment. Some efforts will be over in around 20 seconds, while others will take several minutes. Only your fastest valid time through that selected segment counts towards the league, and the increased rolling resistance of Zwift’s brick and cobbles will add little extra punishment beneath the wheels.

Drafting is disabled, powerups are off, and TT bikes are not allowed. Bike and wheel choice is otherwise completely open.

Most rounds use a custom finish shortly after the selected segment. The finish itself doesn’t count toward the standings. It simply makes sure the full timed effort is completed and recorded.

How the League Works

Each round has four start times spread across the day so riders around the world can take part:

• Wednesday at 5:30am UTC/1:30am ET/Tuesday 10:30pm PT
• Wednesday at 8:30am UTC/4:30am ET/1:30am PT
• Wednesday at 6:30pm UTC/2:30pm ET/11:30am PT
• Thursday 1:30am UTC/Wednesday 9:30pm ET/Wednesday 6:30pm PT

View all Stonegrinder events at zwift.com/events/tag/stonegrinder >

You can race more than one time slot in the same round, with only your fastest valid segment time counting.

The standings are ranked first by the number of rounds completed, then by lowest cumulative segment time. Complete all eight rounds and you will always rank ahead of someone who completes seven.

Live results and series standings will be available through the Stonegrinder Series on ZwiftPower.

Season 1 Route/Segment Details

Season 1 runs every Wednesday from November 4 through December 23, 2026.