
first-time half marathon prep
v1by FitnessGrid
A 12-week structured running and strength program designed to take a novice runner to their first half marathon finish.
runningendurancehalf-marathonnoviceperiodization
Get an AI coach that uses this skill
FitnessGrid is an AI coach that plans your week and adapts as you go. Install first-time half marathon prep and your coach will follow this protocol every week, learn from what you actually do, and adjust on the fly.
- Your coach builds the week from this skill
- Adapts to your actual progress, not a static template
- Free to start — no credit card, ~60 seconds to set up
Procedure
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Assess Baseline & Zones
- Verify the user can comfortably run/walk 2–3 miles.
- Use
compute_hr_zonesto establish "Zone 2" (Conversational Pace) for the 80/20 intensity rule. - Use
create_noteto record the goal race date and target "finish-only" focus.
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Initialize Periodized Schedule
- Use
create_weekto build out the 12-week structure. - Base Phase (Weeks 1-4): Focus on habit formation and building to a 4-mile long run.
- Build Phase (Weeks 5-8): Focus on fueling/hydration and building to a 7.5-mile long run.
- Peak & Taper (Weeks 9-12): Focus on peak mileage (11 miles in Week 10) and the taper (Week 11).
- Use
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Program Weekly Workouts
- Use
create_workoutfor each week based on the research brief:- Tuesday/Thursday: Easy Runs (Zone 2). Start at 2 miles; progress to 4 miles.
- Wednesday: Strength Training. Add exercises like Goblet Squats, Romanian Deadlifts, and Planks via
add_exercise. - Saturday: Long Run (Endurance). Start at 3 miles; peak at 11 miles in Week 10.
- Monday/Friday/Sunday: Schedule Rest, Cross-Training, or Active Recovery.
- Use
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Apply Deload Logic
- For Weeks 4 and 8, reduce total mileage and intensity by 10–20% compared to the previous week using
update_workout. - Set the Saturday Long Run to 3 miles (Week 4) and 4 miles (Week 8).
- For Weeks 4 and 8, reduce total mileage and intensity by 10–20% compared to the previous week using
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Insert Coaching Cues
- Use
create_noteor workout descriptions to provide technical cues:- Posture: "Run tall; imagine a string pulling the crown of your head upward."
- Footstrike: "Land under your center of mass; avoid overstriding."
- Cadence: "Short, quick steps to reduce joint impact."
- Effort: "Conversational pace; you should be able to speak in full sentences."
- Use
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Taper & Race Integration
- Week 11 (Taper): Drop volume significantly (6-mile long run) while maintaining some intensity.
- Week 12 (Race): Schedule 2-mile easy runs on Tuesday/Thursday and the 13.1-mile goal event on Saturday.