K3 ULTRA 5K KIDS - K3 Ultra

First Steps Toward Big Dreams!

K3 ULTRA 5K KIDS

The race

Start/Final

Zlatograd, 1 Stefan Stambolov St.

Beginning

26.09.2026г., 4:00 pm

Registration

From February 26, 2026 to September 1, 2026

Registration is completely FREE.

Registered athletes

The K3 ULTRA 5K KIDS route starts from the center of Zlatograd, where our young participants set off on their first big adventure, cheered on by the applause of their parents, friends, and all visitors of the town. With smiles, excitement, and endless energy, they take their first steps toward an unforgettable day.

After around 2.5 km, they reach St. Athanasius Chapel – the special spot that marks the highest point of the route. There, we’ll stop for one biiig group photo, because every great adventure deserves to be remembered.

After that, our little heroes head back along the trails toward Zlatograd, where smiles, applause, gifts, and the feeling of achieving something truly special will be waiting for them at the finish line. Because great stories begin with small steps.

Every young participant will receive a starter pack including the official K3 ULTRA event t-shirt, made from premium Italian fabric with recycled fibers – a special keepsake from their first big adventure.

Beyond the run itself, there will be lots of prizes, games, and surprises, prepared by us and our partners, because K3 ULTRA 5K KIDS is much more than a race – it’s a true celebration of sport!

On-site registration will not be available.

A SPECIAL GIFT FOR ALL OUR LITTLE HEROES

THE OFFICIAL K3 ULTRA 2026 T-SHIRT

Get Ready for the Big Day

Important Information for the Race

1

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 for participation in K3 ULTRA

2) Declaration for participation for participants under 18 in K3 ULTRA

2

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.

Refund policy:

During the late registration period (01.08 – 01.09.2026) – 50% of the fee is refundable.

After the end of online registration – the fee is non-refundable.

Transfer Policy:

Transferring participation to the following year is possible until the closing of online registration.

Transferring the registration to another participant can be done up until the online registration closes.

Changing the race distance is allowed until the online registration closes.

After 01/09/26 no registrations will be accepted. On-site registrations are not available.

* 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.