- Event Overview

Goldwin will be hosting a special running event in Chamonix, together with our athlete Gediminas Grinius and a guest runner Natalia Mastrota.
Whether you‘re training for a race day or simply looking to enjoy an inspiring running experience, this is the perfect opportunity to connect with fellow runners and feel the unique energy of Chamonix.
As a special gift, all participants will receive a pair of Goldwin Paper Fiber Pile Mid Cut Socks.
Don't miss this chance to run with us!

Special Gift
Paper Fiber Pile Mid Cut Socks

- Details of the Event

■ Date:
August 26th | 8:00-10:00 with Gediminas Grinius
August 28th | 8:00-10:00 with Natalia Mastrota

■ Meeting Point:
Sanglard Sports

Address: 199 place du Mont Blanc 74400 Chamonix France 

[MAP]

■ Course:
3-5km

■ Free Admission

■ Number of participants:
Up to 30 runners for both days. On First-come first-serve basis.



■ What to Bring:
Please bring your own running wear and drinks.


Partner Athlete
Gediminas Grinius

Born in 1979 in Lithuania, Gediminas served as a military officer in Iraq before turning to trail running as a means of therapy for PTSD. Seeking greater challenges, he gained experience in major races worldwide and achieved remarkable success. In 2015, he won the Ultra Trail Mount Fuji held in Japan, and in 2016, became the Ultra Trail World Tour Champion. Drawing on his athletic experience, he established the “Trail Running Factory” and now provides tailored coaching to athletes in Europe and all over the world.

- Athlete Track Record
2015: Ultra Trail Mount Fuji / Winner
2016: UTMB® 2016 / Runner-up, Ultra Trail World Tour / Annual Champion
2017: Cappadocia Ultra-Trail / Winner, Ultra Trail Tai Mo Shan / Winner
2018: Gaoligong by UTMB® / Winner, Ultra Trail Tai Mo Shan / Winner
2019: Vermont 100 Endurance Race / Winner, The Wasatch Front 100 Mile Endurance Run / Winner
2020: Ultra 01 / Runner-up
2022: SEOUL 100K / Winner, Doi Inthanon Thailand by UTMB® / 3rd place
2023: Amazean Jungle Thailand by UTMB® / Winner
2024: Amazean Jungle Thailand by UTMB ® / Winner
Guest Runner
Natalia Mastrora

Originally from Milan and now based in Chamonix, Natalia discovered ski mountaineering at the age of 14 and fell in love with it from the very first moment. Just a year later, she moved to Bormio to be closer to the mountains and to dedicate herself to year-round training.

She thrives in long-distance skimo races and enjoys competing in ultra trail running events during the summer. Her greatest motivation is pushing her personal limits and striving to beat her own best.

On recovery days, Natalia can be found climbing, freeskiing, or in the kitchen cooking up delicious Italian meals.

After welcoming her children, Marlo in June 2018 and Sasha in 2020, she has returned to peak form—and is back on the competition circuit, more motivated than ever.


-Best results of2025
GOAT trail race (Emirates) 55km / 1st classified
Transcavallo Skialp(Italy) / 3rd classified
Chianti by UTMB(Italy) 20 km / 7th classified
Amazon Jungle by UTMB(Thailand) 55km / 2nd classified
Kaga Spa by UTMB (Japan)100km / 5th classified