
On Kyiv Day, May 31, regardless of your country, city, or time, join the online start of the 33rd Chestnut Run—a run or walk to cover the traditional 5 km distance for little hearts. Take a photo or video and share it on social media with the hashtag #Probig2026.
Online participation from anywhere worldwide is available with an online number, which you can download in your account.
Let’s support each other and the little hearts of Ukrainians!
#RunningForLittleHearts
Please send the materials both in Ukrainian and English to [email protected] with the subject line «For the Teams section».


You can purchase the T-shirt on the website of the Mango Print studio, which donates 15% of each order to support young Ukrainian hearts assisted by the Center for Pediatric Cardiology and Cardiac Surgery of the Ministry of Health of Ukraine.
Important: You can independently order the T-shirt from Mango Print until May 23, 2025, inclusive! For all details regarding the souvenir, please contact Mango Print.