What to expect from the GBR 43K adventure?
K3 ULTRA GBR 43K
The race
Madan, 14 Obedinenie St.
Zlatograd, 1 Stefan Stambolov St.
27/09/2025, 9:00 am
9 hours
Registration fee
from 01.04.25 to 03.04.25 including
45 Euro
from 04.04.25 to 31.07.25 including
55 Euro
from 01.08.25 to 03.09.25 including
60 Euro
How can I pay
Bank: DSK Bank
BIC: STSABGSF
IBAN: BG71STSA93000025826614
Recipient: Sdruzhenie "K3 ULTRA"
Reason for payment: Your names and registration code
By bank cards registered in ePay.bg
By bank cards not registered in ePay.bg (ePay World)
In cash at EasyPay checkouts.
CAUTION
• Registration without payment is NOT considered finalised!
• Early registration without payment does NOT reserve the right to a discounted fee (the fee is determined at the time of payment, according to the prices indicated for the three registration periods).
• All three registration periods INCLUDE a GBR K3 ULTRA T-SHIRT in the starter pack.
The start will be given in Madan, and the finish line is in Zlatograd.
From the centre of Madan, after a short run through the town’s streets, the runners will take a trail leading to the “sunny” village of Maglyane (the name is derived from the Bulgarian word for “fog”), and from there almost all the time the course follows the so-called Madan Ore Field, where runners will be able to see both unique mineral formations and special mining facilities. They will pass beneath the unique aerial cableway and reach one of the most impressive rock formations in the Rhodopes – Kechi Kaya, around which of the remains of the important medieval Koznik Fortress can be seen.
Here, an aid station will be set up, offering traditional Rhodopean delicacies from the Madan region. The route then passes by the Babkata Mound and through an amazing beech forest before reaching the border itself. On the southern border, runners can admire the Rhodopes in Greece, and on clear day, they may even see the 1600-meter-high peaks of Samothrace Island. To the east the picturesque Varbitsa River Valley unfolds.
From the border there is a smooth descent again along the mountain ridge passing above the Alamovtsi village, where there will be an aid station, through Rupchevo Peak, Kilovi Kolibi and Kosora Peak. After that, the runners descend to the St. Ekaterina Chapel. From here, only two kilometers remain to the finish line in Zlatograd, a section shared by all distances.
The course follows the classic marathon length of approximately 42.195 km – a marathon from Madan to Zlatograd!
Great things happen when people and mountains meet!
T-SHIRT K3 ULTRA
The K3 ULTRA GBR T-shirt is made of high quality breathable fabric to be a loyal and faithful ally of the runners in the mountain. The design of the T-shirt successfully conveys and complements the overall experience of K3 ULTRA.
*The T-shirt of the event IS included in the starter pack.
What is included in the K3 ULTRA entry fee
What you get
Starter pack
The starter pack for each contestant includes a t-shirt, starter number, gifts from the sponsors and partners of the competition as well as a special surprise prepared by the organisers.
Perfect event organisation
K3 ULTRA participants will have carefully placed markings, cleared and safe trails with minimal asphalt sections, electronic reporting of the results, information on hotel accommodation, tent and camper site. Professional photo footage.
ITRA Certification and UTMB Index
Ability to qualify for the UTMB® Index and for ITRA Certification.
Medical assistance
The safety of the participants in the ultramarathon is ensured by mountain insurance included in the entry fee and the availability of medical assistance during the entire event.
Food and drinks
The aid stations at the ultramarathon will be stocked with water, hot and refreshments. Special food is also provided – fruits, vegetables, Rhodope specialities, as well as supplements.
Unforgettable moments
Amazing views, emotional experience, fabulous Rhodopes and new friendships. All participants who cross the finishing line of K3 ULTRA will receive a medal - part of BG Ultra Slam, uniting the leading ultramarathons in Bulgaria.
Details
Maps, tracks and technical information
Get ready for the big day
Important information about the race
Equipment
Mandatory equipment will be checked at the start or when the starter packs are given. Each participant must carry their own mandatory equipment and may be checked at any station OR at the finish line when the race has ended. Everything that is missing from the mandatory equipment, will result in immediate disqualification. There are no penalties for a missing recommended gear.
Declarations
Competitors must sign certain declarations to participate in the competition. The declarations can be downloaded below. Please familiarise yourself with the text of the document. The declaration of participation is signed electronically upon receiving the starter pack. The declaration of participation for persons under 18 is to be printed, signed by both parents and provided upon receiving a start number for the child.
Download declarations here:
1) Declaration of participation in K3ULTRA
2) Declaration of participation of persons under 18 years of age
Tracks
Registration for K3 ULTRA
Anyone wishing to participate in the K3 ULTRA Ultramarathon must register and sign in by selecting a distance, entering additional data and paying the appropriate entry fee.
(Users who have registration in iRun.bg, don’t need to register again.)
After 03/09/25 no registrations will be accepted. On-site registrations are not available.
* The distance can be changed before payment is made.
* Water, medical care, aid stations, electronic reporting of results are provided for all participants at all distances.
* All participants in distances 13K, 23K, 43K, 63K and GEOPS 100K who have finished in the control time receive a medal – part of BG Ultra Slam.
Mandatory equipment
*Mandatory equipment will be checked before the start or when receiving the starter packs. Each participant must carry their mandatory equipment themselves and may be checked arbitrarily at an aid station or at the final, after the end of the race. The lack of any item from the mandatory equipment will lead to immediate disqualification.
Recommended equipment
*There are no penalties for missing recommended equipment