The Leukemia & Lymphoma Society's Team In Training®

The Leukemia & Lymphoma Society's Team In Training® is the world's largest endurance sports training program. The program provides training to run or walk a whole or half marathon or participate in a triathlon or century (100-mile) bike ride. Since 1988, more than 295,000 volunteer participants have helped raise more than $660 million.

The Mission and History

The Society's roots stretch back to 1949, when the de Villiers family experienced the devastation of leukemia with the death of their 16-year-old son, Robert Roesler de Villiers. Family members and friends declared war on the disease by creating The Robert Roesler de Villiers Foundation, funding research to find a cure. The foundation later became The Leukemia & Lymphoma Society. Our mission: Cure leukemia, lymphoma, Hodgkin's disease and myeloma, and improve the quality of life of patients and their families.

Team In Training® History Team In Training (TNT) began in 1988, when Bruce Cleland of Rye, NY formed a team that raised funds and trained to run the New York City Marathon in honor of Cleland's daughter Georgia, a leukemia survivor.

The team of 38 runners raised $322,000 for the Society's Westchester/Hudson Valley Chapter. Because of the pioneering efforts of Cleland and the Westchester/Hudson Valley Chapter, Team In Training was born and has grown into the world's largest endurance sports training program. Cleland was honored by Runner's World magazine in 2004 as one of their "Heroes of Running" for his role in establishing TNT.

Join the more than 30,000 runners, walkers, cyclists and triathletes who will participate in the world's major marathons, triathlons and century rides this year on behalf of the Society. Fill out our online Tell Me More form for more details.