This could be your first mountain run


The race


Zlatograd, 1 Stefan Stambolov St.


28.09.2024, 9:00 am

Control time

3 hours

Registration fee

Early bird registration

from 01.03.24 to 05.04.24 including

Early bird registration price

13 Euro

Standard registration

from 06.04.24 to 05.08.24 including

Standard registration price

18 Euro

Late registration

from 06.08.24 to 05.09.24 including

Late registration price

20 Euro

How can I pay

Bank transfer

Bank: DSK Bank​
IBAN:​ BG71STSA93000025826614
Recipient: ​Sdruzhenie "K3 ULTRA"
Reason for payment:​ Your names and registration code

Easypay / ePay.bg system

By bank cards registered in ePay.bg
By bank cards not registered in ePay.bg (ePay World)
In cash at EasyPay checkouts.


• 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 DO NOT include a GBR K3 ULTRA T-SHIRT in the starter pack. When registering for the event it can be additionally purchased.

In 2023, at the request of many beginner runners, we have also prepared a route for a new distance – K3 ULTRA GBR 13K.

For this sprint distance through the beautiful Rhodopes, the runners start from the centre of Zlatograd to the east and climb a narrow path to the St. Athanasius Chapel, from where a panoramic view of the town nestled in the valley of the Varbitsa River is revealed.
Next there is a climb to Chukata, and before long the Gold Border Run itself begins!

From the border, there is a descent to the Bucheto Area, from whose meadow you can see the most beautiful view of the old town, crossing the Varbitsa River and the finish line.
This could be your first mountain run!

Great things happen when people meet mountains!


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 NOT included in the starter pack, but it can be ordered additionally on registration.

What is included in the K3 ULTRA entry fee

What you get

Starter pack

The starter pack for each contestant includes a 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.


Probable classification for UTMB® competitions.

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 the Grand Slam, uniting the leading ultramarathons in Bulgaria.


Maps, tracks and technical information

Get ready for the big day

Important information about the race



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.



Competitors must fill in certain declarations in order to participate in the race. You can download the declarations here. Please read, print, sign and bring in person to the Registration Desk.

Download declarations here:

1) Non-liability statement
2) Data Privacy Statement
3) Declaration of participation of persons under 18 years of age



Download GPX tracks here to help your route navigation.

Download track here:

1) Official GPX track


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 05/09/24 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 GEOPS PROFI, 13K, 23K, 43K, 63K and 85K who have finished in the control time receive a medal – part of the Grand Slam.