Anaerobic exercise is when is physical activity that doesn't cause the body to produce lactate in the muscles. Lactate is produced when very short, high-intensity workouts are done. Running a 5k is prolonged and does not impact the body as harshly as the other options.
weight training can build stamina, improves strength, makes you faster, and just overall boosts your health. some sports even use weight training as a practice. for example, boxing, football, rugby, etc.