Intermediate 5k Training Plan: 8 Weeks for 20 to 25 Minutes
An 8-week intermediate 5k plan for 20 to 25 minute runners: five runs a week, peak 44 km, VO2max intervals and 200 to 300 m reps. Built for sub-20. Free.
An intermediate 5k plan runs 8 weeks at five runs a week, peaks at about 44 km, and puts two speed sessions into each peak week: one at VO2max pace, one at repetition pace. It fits runners whose 5k sits between 20 and 25 minutes, roughly a 41 to 52 minute 10k. Sub-22 sits in the middle, sub-20 at the fast edge.
The 8 weeks
Sample plan · Intermediate 5k
8 weeks, 5 runs a week, peak 44 km, longest run 13 km. Built for a recent 5k of 21:00 (VDOT 47.0). 88 % of the running is easy.
| Week | Km | Key sessions | Long run |
|---|---|---|---|
| 1 Base | 35 | Easy running only | 10 km long run |
| 2 Base | 39 | Easy running only | 11 km long run + strides |
| 3 Base | 40 | Tempo run: 15 min T | 11 km long run |
| 4 Build, recovery | 32 | Cruise intervals: 3 × 1.6 km T (1 min jog); Long intervals: 3 × 3 min I (3 min jog) | 9 km long run |
| 5 Build | 43 | Tempo run: 20 min T; 30/30 intervals: 2 × (12 × 30 s I / 30 s jog), 3 min between sets | 13 km long run + strides |
| 6 Peak | 44 | Long intervals: 4 × 3 min I (3 min jog); 200 m reps: 8 × 200 m R (200 m jog) | 13 km long run + strides |
| 7 Peak | 43 | 1000 m repeats: 3 × 1000 m I (400 m jog); 300 m reps: 6 × 300 m R (300 m jog) | 12 km long run |
| 8 Taper | 24 + race | Sharpener: 6 × 200 m R (200 m jog); race day | None, race week |
- Base, weeks 1 to 3. 35 to 40 km, long runs of 10 to 11 km. A 15-minute tempo in week 3.
- Build, weeks 4 and 5. Week 4 is lighter: 3 × 1.6 km cruise intervals and 3 × 3 minutes at interval pace. Week 5: a 20-minute tempo and two sets of 12 × 30/30.
- Peak, weeks 6 and 7. 4 × 3 minutes and 3 × 1000 m at interval pace, 8 × 200 m and 6 × 300 m at repetition pace. Long runs of 12 to 13 km.
- Taper, week 8. Six 200 m reps, easy running, race day.
Who counts as intermediate
The level comes from Jack Daniels' VDOT, one number from a recent race that sets every training pace. Intermediate means a 5k of 20 to 25 minutes, roughly VDOT 38 to 50. A 22-minute 5k is VDOT 44.5, a 20-minute 5k VDOT 49.8. The sample runner has a 21:00 5k, VDOT 47.
| 5k finish | Race pace | Easy | Marathon | Threshold | Interval |
|---|---|---|---|---|---|
| 20:00 | 4:00 | 4:54–5:53 | 4:32 | 4:16 | 3:55 |
| 22:30 | 4:30 | 5:29–6:34 | 5:05 | 4:46 | 4:22 |
| 25:00 | 5:00 | 6:03–7:14 | 5:38 | 5:16 | 4:50 |
The 5k is a VO2max race
For an intermediate runner, 5k pace is only 5 to 10 seconds per km slower than interval pace. Daniels sets interval pace at roughly the speed you hold at VO2max. A 5k is 20 to 25 minutes of running just under it. That makes interval work the most race-specific session in the plan.
The peak weeks pair it with repetition pace:
- Interval pace, 3 to 5 minute reps. 4 × 3 minutes, then 3 × 1000 m with 400 m jogs. Long enough to reach VO2max, short enough to hold form on the last rep.
- Repetition pace, 200 and 300 m. 23 to 32 seconds per km faster than 5k pace, with an equal-distance jog between. Speed and form, not fatigue.
- 30/30 in the build. Billat (2000) found 30 seconds fast, 30 seconds slower kept runners at VO2max longer than a continuous hard run. It is the bridge from tempo to full intervals.
Threshold comes first, in weeks 3 to 5, as the base the harder work sits on. The rest is easy: 88 % of the running, close to what Seiler found in well-trained endurance athletes.
Your own plan
The sample is one runner. The 5k training plan generator builds yours from your 5k or parkrun time, your weeks until race day, your running days and your long-run day. Add a goal like 19:59 and it shows the gap to your prediction. Free, no account, PDF included.
FAQ
What pace do I need for a sub-20 5k? 4:00 per km, VDOT 49.8. A 10k of 41:28 predicts it.
How many kilometres a week for a sub-20 5k? This plan peaks at 45 km on five days. On four days it still reaches 45 km, with longer runs.
Is 8 weeks enough to break 20 minutes? The plan trains you from today's fitness and does not promise a time. Race at the end, enter the result, and the next block starts from there.
Should I run a parkrun every week during the plan? Only in place of a quality session. Two hard days a week plus a hard parkrun is three, and the plan never schedules two hard days in a row.
Only need your training paces? Enter a recent race:
VDOT
49.8
Danielsのランニングフィットネススコア
| ゾーン | 範囲 | 鍛えられるもの |
|---|---|---|
| E | イージー／ロング 4:54–5:53 /km | 有酸素的土台、毛細血管、脂質代謝。週間ボリュームの大半。 RPE 3〜4、会話可能。 |
| M | マラソン 4:26–4:51 /km | マラソン特化の持久力とエコノミー。 RPE 5〜6、定常。 |
| T | スレッショルド 4:16–4:28 /km | 乳酸性作業閾値。快適にきついテンポとクルーズインターバル。 RPE 7、約1時間のレース強度。 |
| I | インターバル 3:51–4:01 /km | VO₂max。3〜5分のきついレップ。 RPE 9、きつい。 |
| R | レペティション 3:19–3:42 /km | スピード、エコノミー、ランニングパワー。完全休息を伴う短く速いレップ。 RPE 9〜10、速くコントロールされている。 |
E · イージー／ロング. 有酸素的土台、毛細血管、脂質代謝。週間ボリュームの大半。 RPE 3〜4、会話可能。
M · マラソン. マラソン特化の持久力とエコノミー。 RPE 5〜6、定常。
T · スレッショルド. 乳酸性作業閾値。快適にきついテンポとクルーズインターバル。 RPE 7、約1時間のレース強度。
I · インターバル. VO₂max。3〜5分のきついレップ。 RPE 9、きつい。
R · レペティション. スピード、エコノミー、ランニングパワー。完全休息を伴う短く速いレップ。 RPE 9〜10、速くコントロールされている。
- あなたのVDOT 49.8 は、現在のランニングフィットネスを捉える単一の数値です（ランニングエコノミーで調整した「VO₂max」）。すべてのトレーニングペースがこれから導かれます。
- VDOTは最近のきついレースまたはタイムトライアル1本から得られます。全力で走った結果、理想的には5 km以上を使ってください。ハーフマラソンや10 kmが最も安定した推定値を与えます。
- 単位の切り替えを使うとマイルあたりのペースで読めます。フィットネスが上がったら再びレースしてください。VDOTとすべてのペースが更新されます。
- これらはダニエルズの個別のトレーニングペース（E, M, T, I, R）であり、連続したゾーンではありません。それぞれのペースを特定の目的のために走ります。きついペース（T・I・R）の間の空白は意図的なもので、不具合ではありません。
パーソナライズされた結果のPDFと、いつでも再表示できるQRコード付き。
More in this series: the beginner, advanced and sub-elite 5k plans and the intermediate 10k plan.
Sources
- Billat et al. 2000, intermittent runs at VO2max velocity
- Seiler 2010, training intensity distribution
Cover image: TrainingZones.