What’s Running: Training Plans for 5K, 10K, and Half-Marathon

What’s Running: Training Plans for 5K, 10K, and Half-Marathon

Overview

A progressive training plan builds fitness, reduces injury risk, and targets race-specific pacing. Below are three 12-week plans (5K, 10K, half-marathon) assuming a base of 2–4 easy runs per week and the ability to run 20–30 minutes continuously. Each week has 3–5 runs plus optional cross‑training and rest.

Key weekly elements (apply to all plans)

• Easy run: Conversational pace for recovery and aerobic base.
• Long run: Steady, slower-than-race pace to build endurance. Increase gradually.
• Speed/tempo: Intervals or tempo efforts to improve lactate threshold and speed.
• Recovery/cross‑train: Low-impact cardio, strength, mobility.
• Rest: 1–2 full rest days per week.

12-Week 5K Plan (3–4 runs/week)

Weeks 1–4

1. Easy 20–30 min
2. Interval session (e.g., 6×400m at 5K pace, 90s rest)
3. Long run 40–50 min
   (Week 3: add optional easy 20 min)

Weeks 5–8

1. Easy 25–35 min
2. Interval session (e.g., 5×800m at slightly faster than 5K pace) or hill repeats
3. Long run 50–60 min
   (Include one tempo: 15–20 min at comfortably hard in Week 7)

Weeks 9–11 (sharpen)

1. Easy 20–30 min
2. Race-pace intervals (e.g., 4×1K at 5K pace) or shorter faster reps
3. Long run 45–55 min
   Week 12 (taper): Reduce volume 40–60%, keep short race-pace efforts, rest 2 days pre-race.

12-Week 10K Plan (4 runs/week)

Weeks 1–4

1. Easy 30 min
2. Intervals (e.g., 6×800m at 5K pace)
3. Easy 30–40 min + optional strides
4. Long run 60–70 min

Weeks 5–8

1. Easy 30–40 min
2. Tempo 20–30 min at 10K effort
3. Intervals (e.g., 5×1K at slightly faster than 10K pace)
4. Long run 75–90 min

Weeks 9–11

1. Easy 30 min
2. Race-pace tempo runs (20 min at goal 10K pace)
3. Short VO2 intervals (e.g., 8×400m fast)
4. Long run 70–100 min (include some miles at marathon effort for stamina)
   Week 12 (taper): Reduce volume, keep intensity but shorter sessions, rest before race.

12-Week Half‑Marathon Plan (4–5 runs/week)

Weeks 1–4

1. Easy 30–40 min
2. Intervals (e.g., 6×800m)
3. Easy 30 min or recovery cross-train
4. Long run 8–10 miles (12–16 km)
5. Optional easy run or strength session

Weeks 5–8

1. Easy 35–45 min
2. Tempo 30–40 min at half‑marathon effort
3. Intervals or hill work
4. Long run 10–14 miles (16–22 km) with some steady segments
5. Easy recovery run

Weeks 9–11 (peak)

1. Easy 30–40 min
2. Race-pace tempo 30–45 min
3. VO2 or threshold intervals
4. Long run 12–16 miles (19–26 km) — peak at 16–18 miles if targeting aggressive time
5. Easy recovery run
   Week 12 (taper): Reduce weekly mileage 40–60%, keep short race-pace reps, rest before race.

Sample week (10K plan, Week 7)

1. Mon — Rest or cross-train
2. Tue — 8×800m at 10K effort, 2–3 min rest
3. Wed — Easy 30–40 min + strides
4. Thu — Tempo 25 min at comfortably hard
5. Fri — Rest
6. Sat — Easy 40 min
7. Sun — Long run 80 min

Injury prevention & extras

• Strength 2×/week: hip/glute/core, single-leg work.
• Mobility: dynamic warm-ups, foam rolling.
• Progression: increase weekly volume ≤10% and one long-run step-up every 2–3 weeks, then a recovery cutback week.
• Nutrition/hydration: practice fueling on long runs for 10K+ and half‑marathon.
• Pacing: practice goal race pace in workouts; start conservatively on race day.

If you want a customized 12-week plan with your current weekly mileage, goal time, and injury history, tell me those details and I’ll generate it.