%0 Journal Article %T PREPARATION FOR COMPETITIONS FOR 18-20-YEAR-OLD RUNNERS SPECIALIZING IN MARATHON %A , .. %A , .. %K MARATHON TRAINING FOR 18-20-YEAR-OLD RUNNERS, MEANS AND METHODS, PROGRAM OF PREPARATION FOR COMPETITIONS %J Scientific notes of P. F. Lesgaft University %D 2023 %N %P 6 %I National State University of Physical Education, Sports and Health named after P.F. Lesgaft