You can train for a half marathon in exactly 12 weeks by combining three types of runs each week: long endurance runs that build to 10-12 miles, speed or tempo sessions that sharpen your pace, and recovery runs that let your body adapt. This training window gives you enough time to safely build mileage, develop stamina, and cross the finish line strong without rushing the process or risking injury.
Key Takeaway: A 12-week half marathon plan balances endurance runs, speed work, and recovery days across a flexible weekly structure that adapts to your schedule. Most runners train 3-5 days per …
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