Peaking sample plan
12-Week 5K Training Plan
5K in 12 weeks (intermediate): 4 days, peak 40 km, long run 14 km. Phases Base (Weeks 1–4), Build (Weeks 5–8), Peak (Weeks 9–10), Taper (Weeks 11–12). 5Ks are trained with intervals (4:48 /km) and easy running that is actually easy (6:03 /km).
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Start freeA 12-week 5k plan for intermediate runners. Peak week 40 km, key long session 14 km, 4 training days. Peaking periodization: Base → Build → Peak → Taper.
- Peak week
- 40 km
- Key long
- 14 km
- Days / week
- 4
- Race pace
- 4:48 /km
- Easy
- 6:03 /km
- Tempo
- 5:00 /km
- Intervals
- 4:48 /km
Week-by-week overview
Weeks 1–4
Base
Aerobic volume, easy running, and a durable long run. Intensity stays mostly conversational.
Weeks 5–8
Build
Threshold and race-pace work land on top of the base. Long run stretches toward its peak.
Weeks 9–10
Peak
Highest quality + highest fatigue. Race-specific sessions, then a down week before taper.
Weeks 11–12
Taper
Volume drops 40–60%. Keep a little intensity so you stay sharp, then race.
| Wk | Phase | Focus | Volume |
|---|---|---|---|
| 1 | base | Aerobic consistency | 31 km |
| 2 | base | Growing the long run | 31 km |
| 3 | base | Easy economy | 32 km |
| 4 | base | Settling-in week | 32 km |
| 5 | build | Threshold + long run | 38 km |
| 6 | build | Race-pace work | 38 km |
| 7 | build | Quality on volume | 38 km |
| 8 | build | Loading week | 38 km |
| 9 | peak | Peak specific load | 40 km |
| 10 | peak | Controlled down week | 40 km |
| 11 | taper | Taper — short quality | 22 km |
| 12 | taper | Race week | 17 km |
Sample week 9
Peak specific load · 40 km
Week 9 (peak): keep 6:03/km honestly easy. Quality lives at 4:48/km. If the long run feels heavy, cut 10% — don't add a day.
Mon
Rest
Tue
running
Intervals
50 min · RPE 7
- Warm-up12 min6:03/km
- Intervals8×400 m4:48/km · eq. rest
- Cool-down10 min6:03/km
Wed
running
Easy run
50 min · RPE 3
- Warm-up10 minEasy Z1
- Main set8 km6:03/km
- Cool-down5 minWalk / jog
Thu
running
Tempo / threshold
43 min · RPE 6
- Warm-up12 min6:03/km
- Tempo2×12 min5:00/km · 2 min jog
- Cool-down8 min6:03/km
Fri
Rest
Sat
running
Long run
87 min · RPE 4
- Warm-up10 minEasy Z1
- Main set14 km5:41/km
- Cool-down5 minWalk / jog
Sun
Rest
Who this plan is for
intermediate level, 4 days, peak 40 km. If that describes your current week ±20%, this block fits. Peaking then asks for real availability, injuries and PBs; this preview is the skeleton for the query “12-Week 5K Training Plan”.
How the weeks are periodized
Weeks 1–4: Base — Aerobic volume, easy running, and a durable long run. Intensity stays mostly conversational. Weeks 5–8: Build — Threshold and race-pace work land on top of the base. Long run stretches toward its peak. Weeks 9–10: Peak — Highest quality + highest fatigue. Race-specific sessions, then a down week before taper. Weeks 11–12: Taper — Volume drops 40–60%. Keep a little intensity so you stay sharp, then race. Volume doesn't climb in a straight line: each phase has its own wave, plus a down week before taper. Peak load 40 km. Week 9 (preview below) sits at peak quality.
Intervals, tempo and easy running
Quality A: intervals at 4:48 /km. Quality B (unless you're a beginner): tempo at 5:00 /km. Long run 14 km at long-run pace, not race pace. The classic 5K mistake is running the easy days at 4:48 /km; here easy is anchored to 6:03 /km.
5K: economy and recovery
The 5K is short; the mistake is training every day as if it were short. 4 days, with easy running at 6:03 /km so the intervals at 4:48 /km are actually fast. Long warm-up on quality day (12–15 min). The 14 km long run keeps the aerobic base that holds a 5 km effort together.
From this preview to a plan that's yours
The preview is anchored to “12-Week 5K Training Plan”: 4 days, 40 km, 4:48 /km. At signup Peaking preloads distance (5K), 12 weeks and intermediate level. The live engine then asks for PBs, available days and constraints, and regenerates whole weeks — not a static PDF. The CTA below opens registration with those fields and this page's UTMs.
Generate your personalized 12-week 5K plan
We preload distance, weeks and goal. Start free — the engine builds the plan from your PBs and real days.
Start freeFrequently asked questions
Is this 12-week 5K a generic plan?+
The overview and week 9 come from Peaking's periodization composer (same phases and session types as an in-app plan). It's persisted per slug — it doesn't change on every visit. The paid plan personalizes from your PBs and real days.
How many kilometres / hours per week does it peak at?+
Peak 40 km, key long session 14 km, 4 days. Base weeks sit well below that; the taper (Weeks 11–12) cuts volume and keeps short quality.
What pace should I use if my mark isn't 24:00?+
This preview anchors race to 4:48 /km, easy to 6:03 /km and threshold to 5:00 /km. In the app, paces come from your PBs or a Riegel predictor — don't copy these splits if your current 10K sits at a different level.
Can I skip days or squeeze this into fewer than 12 weeks?+
Skip an easy day, never the long run or both quality sessions in the same week. Compressing 12 → 8 often works if the base is already there; the hub lists other durations for this 5K.
How do I go from this page to a plan generated for me?+
Start free preloads 5K, 12 weeks and intermediate. You finish onboarding (sports, PBs, days) and the engine builds the full plan. This URL stays as the SEO reference; your plan lives on the dashboard.