From 100kg to Running a 100-Mile World Record

➡️ Join The Endurance Lab Inner Circle on Telegram👉 https://t.me/TheEnduranceLabInnerCircleAleksandr Sorokin went from weighing around 100 kilograms, smoking, drinking alcohol, and living an unhealthy lifestyle to becoming one of the greatest ultrarunners in the world.In this episode of The Endurance Lab, Aleksandr shares how he transformed his life, lost the weight, discovered ultrarunning, and eventually broke multiple world records in his 40s.His achievements include:🏃 100 km world record — 6:05:35🏃 100 mile world record — 10:51:39🏃 6-hour world record — 98.496 km🏃 12-hour world record — 177.410 km🏃 24-hour world record — 319.614 kmHe became the first runner to break the 11-hour barrier for 100 miles, and during that same race he also set the 12-hour world record.What makes Alexander’s story even more remarkable is that he did not begin running seriously until around age 32. Before that, after finishing his earlier sporting career in kayaking, he says his lifestyle became unhealthy — alcohol, cigarettes, poor food choices, and his body weight climbed to around 100 kg.Running initially started as a way to lose weight. Then he discovered ultra-running. A few years later, he was winning major races. By his early 40s, he was breaking world records.Alexander explains how his training evolved from roughly 60–80 km per week to peak weeks around 250–300 km, why long runs of 30–50 km became the foundation of his training, how he uses interval sessions to maintain speed as he gets older, and why recovery has become increasingly important in his mid-40s.We also discuss what runners over 40 can learn from his progression, why starting later does not necessarily mean your best running years are behind you, and how consistency, training variety, mileage and simply loving the process have shaped his career.For masters runners, recreational runners, marathoners and ultrarunners, Alexander’s journey is a powerful example of how dramatically running performance can change even when you start later in life.➡️ Save $100 on Tymewear Pro Training MembershipCode: E-LABTW26👉 https://www.tymewear.com/E-LABTW26➡️ Listen to my conversation with TimeWear founder Anar Larson:👉 https://open.spotify.com/episode/5sz25EZjGUHoGSaA38nHwM00:00 From 100 kg to running1:35 Alexander’s world records2:50 His life before running5:43 From weight loss to world records7:18 Did he ever expect to become elite?10:01 Strength training and cross-training11:03 Starting running in his 30s12:52 Can runners still improve after 40?16:54 How his training volume evolved20:56 How his speed training changed with age24:16 Mileage vs structured training25:29 When he reached his peak28:46 How runners over 40 can still improve29:39 What recreational runners can learn from him31:21 Heart rate vs pace33:08 What to do when your best years feel behind you