The Marathon Grand slam club^®

The Marathon Grand Slam Club®, owned and managed exclusively by Runbuk,  is comprised of runners who have completed a marathon distance of 42.195 km (26.2 miles) or longer on each of the Seven Continents and on the Arctic Ocean at the North Pole Marathon.

As of August 1, 2026, the Marathon Grand Slam Club® had 200 members who completed the full marathon distance - 150 men and 50 women.

To be eligible for membership, you must have completed a recognized marathon or ultramarathon on each of the continents, exemplify the spirit of adventure marathon running and be able to authenticate your claim for membership. New members receive a Grand Slam medal.

Grand Slam contenders do not have to take part in specific marathons to become members, but you must be a member of Runbuk's 7 Continents Marathon Club^™.