OLEUS Flandrien Trail 2026
June 27 & 28, 2026
From hiker to trail runner: everyone can be a Flandrien!
What?
From June 27 to 28 it will be a full Flandrien weekend: on Saturday , hikers will head into nature, on Sunday the terrain is for trail runners.Â
On the flanks of the Paterberg, the Hotond and the Oude Kwaremont are where true Flandriens are forged.Â
We combine these legendary calf-burners with a generous dose of greenery to create the one and only OLEUS Flandrien Trail.Â
With three carefully mapped out distances , the OLEUS Flandrien Trail offers a suitable challenge for every participant.Â
Details.
When?
Hour
Start: 43km / 22.5km / 17.5km: 8:30 a.m.
Finish closes: 6:00 p.m.
Reception June 28 (Run): 7:30 a.m.
43km: 9:00 a.m.
22.5km: 10:00 a.m.
17.5km: 11:00 a.m.
Where?
How far?
22.5 km
43 km
Registration is open until?
What do I get for this?
Professional time registration
Signposted route
Refreshments
Insurance
Medal
Changing rooms and showers
Professional organization
Runners' lab voucher worth €10
Terms and Conditions?
Share this event!
Course
The Flemish Ardennes form the backdrop for the OLEUS Flandrien Trail. Expect a route that is largely on unpaved paths , combined with a substantial amount of elevation gain.Â
Start and finish are located at 't Rosco Sports Hall in Ronse. From there, you immediately head into the countryside and dive straight into the heart of the Flemish Ardennes.Â
17.5 km:
- 206 meters of elevation gain
- Hotond
- 2x supplies
- 8 km – 10 km
22.5 km:
-
- 330 meters of elevation gain
- Hotond
- 2x supplies
- 8 miles – 15 miles
43 km:
- 743 meters of elevation gain
- Hotond, Paterberg, and Oude Kwaremont
- 4x supplies
- 8 km – 17 km – 24 km – 33 km
GPX:
- 17.5 km: Flandrien-17.5DEF
- 23 km: Flandrien-23DEF
- 43 km: Flandrien-43 DEF
Program
- Saturday program :Â
Reception: 7:00 a.m.
Start: 8:30 a.m. (all distances)
- Sunday program :Â
Reception: 7:30 a.m.
43 km: 9:00 a.m.
22.5 km: 10:00 a.m.
17.5 km: 11:00 a.m.
Time limit: all runners must finish by 3:00 p.m. at the latest.
Practical information
Day registration: Possible on site, if starting permits are still available.
Thestart and finish of the OLEUS Flandrientrail are located at Sporthal 't Rosco (Leuzesesteenweg 241, 9600 Ronse).
Luggage
Free storage space is provided for your personal belongings.
Changing rooms, showers, and sanitary facilities
Changing rooms, showers, and restrooms are available.
Finishers' village
There will be food and drink facilities at the sports hall so you can relax and enjoy yourself after the run. Also ideal for supporters!
All our events are cup-free: thismeans that we do NOT provide cups at the refreshment stations.
So bring your own running backpack or drinking cup and take it with you on the course. Don't have one yet? You can purchase an eco-cup or soft flask when you register or at the reception desk on the day of the event.
Sports insurance
The ultimate preparation
Still looking for the perfect gear? Check!
With Runners’ Lab’s tips and gear, you can get the most out of your running experience.
Runners’ Labprovides personalized professional advice, fully tailored to your goals.
 Discover here Take all these tips to heart and step up to the starting line with confidence!
Participation fee
Same-day registrations are possible at the event itself.
Business village
Choose an atypical team-building activity together with your colleagues!
Fancy some fun team building with your colleagues, or do you want to encourage each other as a former management team to achieve a new running goal together? Then registerhereas a groupnow. Group registrations are possible up to 2 weeks before the event.
View the step-by-step plan forgroup registrations here.Prefer a video? View the instructions for team captainshere.
- First, create an account atwww.keeponrunning.beby clicking on the Login button in the top right corner.
- The website works best in Google Chrome.
- Complete the steps and confirm your account via the link in the email (often ends up in spam).
- Only then should you go to the link for group registrations.
- Use your team's code or set a code as team captain.
- Fill in all your details and register in a team.
- Payment must be made before the start of the event via the team captain's profile.
- If you have any questions, please contact:events@keeponrunning.be
Why register as a group?
- Your group name on all bib numbers.
- Extra recognizable in photos.
- All bib numbers are ready and waiting at reception, so only one person needs to come and collect them.
- Group registration possible on invoice.
OLEUS
OLEUS helps endurance athletes and adventurers tackle any distance with long-lasting energy at the cellular level. Their endurance shots support your mitochondria, so you can keep going when others give up.
Want to try OLEUS for yourself? Join one of the three Social Trail Runs organized by OLEUS and experience the effect of their endurance shots firsthand. More details will follow soon, but here's a sneak peek: OLEUS will also be present at the OLEUS Flandrientrail with its own stand!
Alsico
Alsico is a family business founded in 1934 that has grown to become one of Europe's leading designers and manufacturers of workwear. Alsico employs more than 8,000 people worldwide, spread across five continents. With more than 20 strategically located factories, Alsico has a powerful international supply chain.
Alsico is constantly pushing the boundaries in the field of innovative, comfortable, and protective workwear. In doing so, Alsico improves the lives of people in the workplace without compromising on what matters. The goal is to keep every employee comfortable and protected so that they have the confidence to perform at their best.
LOWA
Discover trail running with LOWA – and try them out for yourself!
LOWA, an expert in outdoor footwear for 100 years, is now applying its expertise to trail running. With the perfect blend of traction, comfort, and responsiveness, these shoes are designed for any terrain, from forest trails to technical trails.
During the OLEUS Flandrien Trail, you can try out the latest LOWA trail shoes for yourself. Get personalized advice from a LOWA expert and experience the difference on the trail.
👉 Put them on and discover how comfort, grip, and speed come together.
Reselling tickets
Are you unable to attend this event at the last minute? Find out what you can do below:Â
Up to 21 days before the event, you will receive a 75% refund of the registration fee. You can cancel your ticket yourself via your Keep on Running profile.
Less than 21 days until the event? Keep on Running does not currently offer a resale platform. Look for a buyer/seller among your friends and acquaintances or check out ourcommunityon Facebook.
Seeherehow to easily transfer your ticket. Or read the step-by-step planhere.
Please note! With options A & B, you choose to transfer the ticket for FREE and the buyer will not receive a payment link. If you want the buyer to purchase the ticket, choose option C.
BLACKROLL® X Keep on Running
BLACKROLL® is the exclusive recovery partner of all Keep on Running events throughout the year. Whether you're doing a fast street run or tackling a long trail, the BLACKROLL® Compression Boots will be waiting for you at the finish line. Recovery is just at the finish line.
You can literally slide into recovery and count on professional advice from experienced BLACKROLL® coaches. They not only help you recover faster, but also guide you with tips on how to train smarter and more focused towards your next goal.
As a participant, you have the chance to win a pair of BLACKROLL® Compression Boots every quarter.
But BLACKROLL® is more than just recovery. As a Healthstyle Company, we offer a wide range of innovative products that support you in living a pain-free, healthy, and productive life. Tools you can use right away: for muscle relaxation during and after exercise, an effective warm-up, targeted training, better posture, and even a deeper night's sleep.
👉 BLACKROLL® – Keep on Running’s official and exclusive recovery partner.
I'm joining in!
Registration is open until
June 26, 2026
or while supplies last.
Personal Coaching.
Prepare for your running challenge.
Would you like to keep running injury-free and enjoy this fantastic sport while preparing yourself optimally for an upcoming running challenge? Then our brand-new coaching package might be just the thing for you!
Coaching package
completely tailored to your needs.-
1 lactate test + intake interview
-
3 months of fully personalized training plans
-
Ongoing coaching (remote) with weekly adjustments to the schedule
-
2 live workshops (including guided training)
-
Use TrainingPeaks
-
Drawing up a personal competition plan
Partners.
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