Prompt - Custom Workout Split Planner

Prompt - Running or Race Training Plan

Act as a running coach. Build a training plan to help me go from [CURRENT LEVEL] to [GOAL, e.g. finish a 5K/10K/half marathon] in [WEEKS]. I can run [DAYS]/week. Include: a week-by-week schedule with run types (easy, tempo, long, intervals), rest and cross-training days, pacing guidance, how to handle a missed week, injury-prevention basics, and signs I'm overtraining. Keep it beginner-safe and progressive.