Join us at June 19-21, '26.
for the Longest Day(s) Challenge
and add the greatest circle
The Netherlands to your achievements



Cycle the largest circle of the Netherlands (635km+) during the longest day/weekend of the year — from sunrise to sunset.

An epic self-supported challenge across seven provinces, featuring a unique mix of landscapes: from the German border in the east to the North Sea coast in the west.

Including the Round Package, plus extras:
✓ 4 checkpoints along the way to refuel
✓ Route guide with water points, sleeping spots, and super handy ride schedules
✓ You will receive the GPX route from us (of course)
✓ Includes a fun keepsake: the Rondobox including the unique NL cycling pin! 🎁
✓ Live tracker, so your fans can follow you

✓ Ride and support: KiKa — Every child cancer-free 🙏🧡

✓ Fiets én steun: KiKa — Ieder kind kankervrij 🙏🧡

Count me in!
More info

ps. Can't make it on the event date?
Go on another date with Rondopack

1 10

Rondo Pack - Longest Day(s) Challenge + Digital Rondoguide & GPX
Reward
For

✓ Rondegids en gpx direct beschikbaar

✓ Onbeperkte route-updates, ook na het event

View full details
 

Route

Road route ⟲635km+ ⇗810m

Gravel route ⟲635km+ ⇗890m

The largest circle in the Netherlands - Based on 'The largest circle in the Netherlands' by Quinda, but even a bit rounder and more fun!

A beautiful route, perfectly mapped out – a lovely circle on the map and a super fun, bike-friendly route full of unique highlights. 🚴‍♂️✨

To put this round on the map, you make an impressive loop through the Netherlands. In seven different provinces, you traverse a variety of beautiful landscapes in 'the low countries' between the German border on the east side and the North Sea coast on the west side.

It is a legendary round with famous (cycling) highlights, including Kopje van Bloemendaal, the VAM mountain, Montferland, National Parks Dwingelderveld, Drents-Friese Wold, and along the famous beach boulevard of Egmond.

You cross various rivers and other waters, including the IJsselmeer/Wadden Sea via the 32km long Afsluitdijk (bike bus due to construction work). At Doornenburg-Pannerden, you take the ferry. At Ameide and Tiel, you have the option to take a ferry for the perfect circle, or to cycle a bit further to a bridge. After at least 635km on the pedals, you return to the starting point. The circle is complete!

Narrow straps? The route goes entirely over paved roads.

Gravel bike? Take the surprising gravel route with approximately 35% unpaved/gravel sections.

Longest Day(s) Challenge

June 19-21, 2026 - gravel / road

Sunday, June 21, 2026 - road

🕒 PROGRAM & INFO

Longest Day Challenge
On Sunday, June 21, your adventure begins in Tiel at 0:00 hours. The mission: finish before 22:04 hours — sunset on the longest day of the year.
And of course, it's no problem if you take a little longer.

Longest Weekend Challenge
On Friday, June 19, your adventure begins in Schoorl or Tiel at 17:00 hours. Exactly when the weekend starts for most. The mission: finish on Sunday, June 21, before 22:04 hours. The weekend challenge is done in 3 stages where you only ride when the sun is above the horizon: Friday approximately 100km, the remaining 535km is divided over Saturday and Sunday.

Start locations / Checkpoints
CP South: Body Dynamics / Cycling Center de Betuwe - Tiel (Start/Finish Longest Weekend / Day)
CP West: JOOP - Schoorl (Start/Finish)
CP North: Fitconcept - Grou
CP East: Cycling Café Paris is still far - Doetinchem

Choose your own start and finish location: CP South or CP West.
Route choice: Road or Gravel (±35% offroad).
Solo, with your cycling buddies, or join a small group.

‎
For the first 25 registrants: discounted early-bird ticket!
 Registration is open from December 1, 2025, until June 1, 2026, at the latest.‎

Questions? Email to mr@granrondo.cc

Count me in!

🌟 Rondoguide

✓ Directly ready for your adventure: After your order, you have immediate access in your account to the digital Rondoguide.
✓ Routes available in Wolf Maps, GPX, and Komoot.
✓ Unlimited route updates! Always the most recent version of the route and Rondoguide available in your account.
✓ Beautifully detailed guide with all the information to make your cycling adventure a success.
✓ Recommended cafes / restaurants / rest points along the route with links to Google Maps for opening hours and navigation.
✓ Water points along the route to refill your water bottles on the go.
✓ Kalkman Discount Code: Get 10% off everything at Kalkman.cc

✓ Timetables for planning your ride.
✓ Information about the ferries on the route and how to get across the Afsluitdijk by bicycle bus.

🎁 Rondobox (optional)

filled with treats and energy for your ride:

✓ 3x Kalkman Energy Bites – The perfect snack for on the go.
✓ Custom Decals: One for your frame, one for your helmet.
✓ Route Coaster: A great keepsake with the emblem and map.

✓ Medal/trophy in the shape of the must-have enamel Cycling pin!🏅

Round-up

How to access your Rondoguide & GPX files?

Immediately after ordering, the Digital Round Guide with the GPX files is available in your account. The Round Box will be distributed during the event.

Do you have to ride it in one go?

You don’t have to finish in a single day—take your time and spread the adventure over several days. Will you tackle it in one go or stay overnight along the way? The choice is yours!

What to expect on the route?

Checkpoints - In every direction, there is a checkpoint. To keep it practical and logistically feasible, participants can only start at Checkpoint South (Tiel) and Checkpoint West (Schoorl). Participants receive a stamp card to collect a stamp at each checkpoint. During the event, the checkpoints can be recognized by the GranRondo banner.

The ride is self-supported. However, we will provide you with a little extra energy at the start and the checkpoints. And for a fee, more food/drinks will be available. It is not possible to stay overnight at the locations. At the start locations, you can leave a bag during the event, but this is at your own risk. The organization/locations are not responsible for items that get lost or forgotten.

Narrow straps? The road route is entirely on paved roads, with about 3km of gravel in the Drents-Friese Wold.

The gravel route contains approximately 35% unpaved/gravel sections distributed along the route.

Longest Weekend Challenge starts in Schoorl – Due to ferry schedules, the gravel route is approximately 10km longer, totaling approximately 645km.

Details / specifics on the route are listed in the Rondegids you receive with the purchase of the Ronde package.

Can you participate as a group?

Yes, that is certainly possible.

How is the Rondobox delivered?

You can pick up the Rondebox at the starting location during the event.

Is cancellation or exchange possible?

If you are unable to attend an event, you can go "Self on Adventure" on another date with the received Rondoguide and route files. Event extras (such as drinks) will not be available. There will be no refunds for payments.

If you have ordered a Rondobox, you can pick it up at the next event or have it sent to you for regular shipping costs by emailing mr@granrondo.cc

Tickets are personal and therefore non-transferable to someone else.

You have registered. Where can you find the GPX?

Here are the steps to find the gpx:

  1. Go to account.granrondo.cc
  2. Enter here the exact same email address you used to place the order.
  3. You will receive a verification code by email that you need to enter.
  4. Go back to account.granrondo.cc
  5. In the Rondo guides, you can see the Rondo you purchased. The GPX is on the Rondo guide page.

How much of your donation goes to KiKa?

100% to KiKa
If you add this round to your start list, you can make a voluntary contribution. The entire amount will go to KiKa.

Events / Challenges
Do you want to give even more motivation / meaning to your participation for the good cause? Then you can create a fundraising page for KiKa to collect donations from your friends, colleagues / network, and family.

Other questions?

Go to Customer Service

or email to mr@granrondo.cc


Count me in!

Other date?

Can't make it on the event date?
Then go on an adventure with the Rondopack yourself.

Choose your own date, starting point, and company. Everything is prepared for you — you just need to cycle and enjoy! 🚴‍♂️✨

✓ Including routes and gravel routes.
✓ Round guide and GPX available immediately
✓ Unlimited route updates
✓ Original gift for your cycling friends 🎁

View Rondo Pack