Decathlon Belfast


Decathlon Belfast are proud to be the Official Apparel Sponsor for the Deep RiverRock Belfast City Marathon and Half Marathon.  At Decathlon we look forward to celebrating our passion brand of Running Apparel named Kalenji at both Belfast Marathon events. 

Decathlon is a French sporting goods retailer. With over 1,500 stores in 49 countries, it is the largest sporting goods retailer in the world.  Founded by Michel Leclercq in 1976, Decathlon started with a store in Lille, France. Kalenji is the running-specific own brand of Decathlon whose apparel has a reputation for being reliable, durable and excellent value for money. 

At Decathlon our aim is to make sport accessible to the many, and in Northern Ireland there is no better sporting event to promote this than the 2020 Deep RiverRock Belfast City Marathon and Half Marathon. We cannot wait to showcase our passion for sport and to welcome all when they visit our Belfast Store, we sincerely hope to create something very special for the Deep RiverRock Belfast City Marathon Events. 

Our Decathlon Belfast Store opened its doors in June 2010 to become Northern Irelands largest sports store. Selling over 70 Sports within its 3,200sqm store. The store is situated at the Holywood Exchange Retail Park next to the Belfast City Airport. The store caters for a wide range of different sports, including Mountain Sports, Watersports, Running, Cycling and Team sports.  The Store also offers workshop services for Bicycle Servicing, Ski & Snowboard Servicing, Skate Sharpening, Tent Repair and T-Shirt Printing. 

Keep up to date with all that is happening at Decathlon Belfast by joining us on Facebook @decathlonbelfast and Instagram #decathlonbelfast 

Explore the full range of Kalenji running apparel at