You could argue that endurance soccer training is the most important element of your conditioning program... And, just as strength training for soccer consists of more than just lifting weights, soccer endurance training involves more than just running continuously. Running - at any intensity - for 90 minutes, requires a high level of stamina. Couple that with the fact that much of that running consists of high intensity sprints, jumps, challenges and tackles, and you can see why endurance soccer training becomes the foundation of any fitness regime.