2019 Gran Fondo World Tour® Series - Enter now to win $10,000 USD!



July 13 2019
Isle of Arran, Scotland, UK

In short, Grinduro is just what it sounds like: Gravel Grinder + Mountain Bike-Style Enduro = one long loop of pavement and dirt, where finishing times aren’t based on overall loop time, but four timed segments (each roughly five-to-ten minutes).

But Grinduro is not just a bike race. It’s a celebration of cycling with as much emphasis on the party as the ride, with excellent food, an impressive display of art and incredible handmade bikes, live music, free camping and a festival atmosphere.

The course is a serious affair (45 miles of rolling terrain) but the Grinduro isn’t meant to be a sufferfest. We’ve linked together some of our favorite roads and trails on the Isle of Arran. With spectacular scenery and a friendly pace, you’ll be in no big rush to find the finish line. The course features a mix of surfaces (smooth pavement, gravel and hard-packed dirt) with punchy climbs, flat out fire road and flowing natural singletrack descents. Riders will finally descend a cliff top to the shoreline with stunning coastal views.

With a Gran Fondo-style mass start from Lamlash, you’ll be pedaling out of town and up the first climb alongside your heroes and the pace will be conversational—because overall time doesn’t matter, only the four timed segments. The Grinduro segments (the exact sections will be shared two weeks prior to the event date) are designed to reward the most well rounded of rouleurs.


Routes: 100km
Difficulty of Greatest Route: D - Difficult terrain with longer, steeper hills
Prize / Race Categories

Each category winner will take home a custom Grinduro trophy and other special prizes.

Pro Men
Expert Junior Men 16 – 20
Expert Men 30 & Under
Expert Men 31 – 40
Expert Men 41 – 50
Expert Men 51 – 60
Master Men 61+
Pro Women
Expert Junior Woman 16 – 20
Expert Woman 30 & Under
Expert Woman 31 – 40
Expert Woman 41 – 50
Expert Woman 51 – 60
Master Woman 61+
Singlespeed Open All Ages

Start Address: Isle of Arran, Scotland
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