Training for a marathon typically takes between 16 and 20 weeks for most runners, which allows enough time to gradually build stamina, strength, and endurance while minimizing injury risk

. For beginners , the recommended training period is often around 17 to 20 weeks, with some plans extending up to 6 months (about 24 weeks) to allow a more gradual buildup, especially if starting with little running experience

. These beginner plans usually start with shorter, easier runs and progressively increase mileage and intensity, incorporating cross-training and rest days for recovery

. For more experienced runners who already have a solid running base, training plans can be shorter, sometimes around 12 to 16 weeks, focusing on increasing speed and endurance more aggressively

. Summary:

• Beginners: Around 16 to 20 weeks, sometimes up to 6 months for gradual buildup

• Intermediate/Experienced runners: 12 to 16 weeks, depending on fitness level and goals

• Key components: Gradual mileage increase, long runs, speed work, cross-training, rest days

This timeline helps prepare the body and mind for the 26.2-mile race while reducing injury risk and improving race-day performance.