Intermediate 10k Training Plan: 10 Weeks for 40 to 50 Minutes

An intermediate 10k plan runs 10 weeks at five runs a week, peaks at about 49 km, and trains the two paces either side of 10k pace: threshold and VO2max. It fits runners whose fitness predicts a 40 to 50 minute 10k: roughly a 19:20 to 24:00 5k, or a half marathon between about 1:29 and 1:51. Sub-45 is in the middle of this band, sub-40 at its fast edge.

The 10 weeks

Sample plan · Intermediate 10k

10 weeks, 5 runs a week, peak 49 km, longest run 16 km. Built for a recent 5k of 21:00 (VDOT 47.0). 85 % of the running is easy.

BaseBuildPeakTaper

Week	Km	Key sessions	Long run
1 Base	35	Easy running only	10 km long run
2 Base	38	Easy running only	12 km long run + strides
3 Base	41	Tempo run: 15 min T	12 km long run
4 Base, recovery	34	Cruise intervals: 3 × 1 km T (1 min jog)	10 km long run
5 Build	45	Broken tempo: 2 × 10 min T (2 min jog); Long intervals: 4 × 3 min I (3 min jog)	14 km long run
6 Build	49	Tempo run: 20 min T; 5k time trial	16 km long run + strides
7 Peak	49	10k pace reps: 3 × 1.6 km race pace (90 s jog); Cruise intervals: 3 × 1.6 km T (1 min jog)	15 km progressive long run
8 Peak, recovery	37	10k pace sets: 2 × (2 × 1 km race pace / 200 m jog), 3 min between sets; Broken tempo: 2 × 8 min T (2 min jog)	11 km long run
9 Peak	49	10k pace reps: 3 × 1.6 km race pace (90 s jog); Tempo run: 20 min T	15 km progressive long run
10 Taper	28 + race	Sharpener: 4 × 2 min race pace (2 min jog); race day	None, race week

Open this plan with your own race time →

• Base, weeks 1 to 4. 35 to 41 km, long runs of 10 to 12 km. Threshold from week 3: a 15-minute tempo, then 3 × 1 km cruise intervals.
• Build, weeks 5 and 6. Up to 49 km. Two quality days: 2 × 10 minutes broken tempo with 4 × 3 minutes at interval pace, then a 20-minute tempo. A 5k time trial closes week 6. Long runs of 14 and 16 km.
• Peak, weeks 7 to 9. 10k pace joins threshold: 3 × 1.6 km at race pace with 90 seconds of jogging, sets of 2 × 1 km with 200 metre jogs, and cruise intervals or tempo on the second quality day. Long runs of 15 km finish at threshold.
• Taper, week 10. About 55 % of peak volume, four 2-minute race-pace pickups, then 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 predicted 10k of 40 to 50 minutes, roughly VDOT 40 to 52. A 45-minute 10k is VDOT 45.3, a 40-minute 10k VDOT 51.9. The sample runner has a 21:00 5k, VDOT 47, which predicts 43:32.

10k finish	Race pace	Easy	Marathon	Threshold	Interval
40:00	4:00	4:45–5:41	4:23	4:07	3:47
45:00	4:30	5:18–6:21	4:55	4:37	4:14
50:00	5:00	5:51–6:59	5:26	5:05	4:40

Where 10k pace sits

Look at the table. For an intermediate runner, 10k pace is 5 to 7 seconds per km faster than threshold and 13 to 20 seconds per km slower than interval pace. It is neither. A 10k lasts 40 to 50 minutes here, shorter than the hour threshold is defined by and far longer than a VO2max interval.

So the plan builds from both sides:

• Threshold pushes the pace you can sustain up. Tempo runs and cruise intervals raise the speed at which lactate stays under control. Every week from 3 to 9 has a threshold session.
• Intervals raise the ceiling. Three- and four-minute reps at VO2max pace in the build make 10k pace a smaller share of your maximum.
• 10k-pace reps join them in the peak. 3 × 1.6 km is 4.8 km at race pace, broken into pieces you can hold on form. The sets in week 8 cut the jog to 200 metres, which is closer to racing.

The easy running around it stays at 85 %. Seiler found well-trained endurance athletes settle on about 80 % of sessions at low intensity. Weekly volume never rises more than 10 % between loading weeks, well inside the 30 % jump Nielsen (2014) linked to more injuries. Weeks 4 and 8 drop to about 75 % for recovery.

Your own plan

The 10k training plan generator builds yours from your recent race, your weeks until race day, your running days and your long-run day. Add a goal like 39:59 to see it next to what your race predicts, with the gap in percent. Enter the week-6 time trial and every pace updates. Free, no account, PDF included.

FAQ

What 5k time do I need for a sub-40 10k? About 19:18, VDOT 51.9. For sub-45, about 21:42.

How many kilometres a week for a sub-45 10k? This plan peaks at 50 km on five days. On four days it also reaches 50 km, with longer runs.

How long should the long run be for a 10k? 14 to 16 km in this sample, 30 % of the week. The plan caps it at 16 km, because longer runs add fatigue without making a 10k faster.

Should I do intervals or tempo for a 10k? Both. Tempo holds the most weight across the plan, intervals come in shorter doses, and 10k-pace reps tie them together in the peak weeks.

Only need your training paces? Enter a recent race:

More in this series: the beginner, advanced and sub-elite 10k plans, the intermediate 5k plan and the intermediate half marathon plan.

Sources

• Seiler 2010, training intensity distribution
• Nielsen et al. 2014, weekly distance progression and injury

Cover image: TrainingZones.