There are five races in the Grand Slam of Ultrarunning Series: Old Dominion 100 Mile Endurance Run, Western States 100 Mile Endurance Run, Vermont 100 Endurance Race, Leadville Trail 100 Run, and Wasatch Front 100 Mile Endurance Run. In order to be eligible for the award, participants must officially complete three of the four first Grand Slam Series races and then complete the Wasatch Front 100 Mile Endurance Run all in the same summer. The Wasatch Front 100 Mile Endurance Run is the final race of the series and is mandatory. You must apply for all of the races you plan to run during their open registration period. This includes the Wasatch 100.
The Grand Slam of Ultrarunning Awards are presented at the Wasatch 100 and the series is organized by the Wasatch Front 100 Mile Endurance Run Race Committee.
The Grand Slam of Ultrarunning Award was established in 1986. The award is a beautifully sculpted eagle with engravings signifying the runner’s name and accomplishment. The awards are presented at the Wasatch Front 100 Mile Endurance Run along with the Wasatch 100 finisher plaques and belt buckles.
In order to be eligible for the award and official recognition, registration must be received by June 28, 2025. The registration fee is $90.00.
History and Management of the Grand Slam of Ultrarunning
The idea of running the four oldest 100 mile trail runs in the country came from Fred Pilon of Ultrarunning Magazine back in 1985. He called Steve Baugh who was the race director of the Wasatch Front 100 Mile Endurance Run at the time. Since Wasatch was the final race of the four, it seemed natural for the Wasatch 100 to organize the Grand Slam and have the awards presented in conjunction with the Wasatch’s finisher awards . Steve collaborated with John Grobben, current and long standing Wasatch 100 race director, and they came up with the name Grand Slam of Ultrarunning. The award was established in cooperation with the race directors of the other four races involved at that time. The first Grand Slam Award was given to Tom Green in 1986. The Wasatch Front 100 Mile Endurance Run has continued to organize and manage the event since that time.
We thank Stan Jensen who has been kind enough to host the Grand Slam application at www.run100s.com/gs.htm for many years. Although our registration is now handled through UltraSignup, Stan’s site will continue to have loads of fun Grand Slam trivia, stories and photos in addition to series statistics.
Questions should be directed to grandslamofultrarunning@gmail.com