21km

Half Marathon in 8 Weeks – Intermediate

Magic Training

Intermediate8 weeks22 mi4 workouts per week
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About the plan

An 8-week plan for people who already run about 22 miles (35 km) per week, have already completed a half marathon and want to improve their time in two months. There are four runs a week — intervals on Monday, a recovery run on Wednesday, a threshold workout on Thursday and the long run on Sunday — with three rest days. Intervals progress from 3-minute blocks to 5 minutes at VO2max pace, and threshold goes from 20 to 30 sustained minutes. In week 6 a 35-minute race-pace time trial comes in, which is where you find out whether your target is calibrated. The long run goes from 80 to 120 minutes. Week 4 is a recovery week, week 7 sharpens, and week 8 ends at the race. Paces come from your times in the Magic Calculator; update your reference time in your profile before starting so threshold, interval and race paces are calibrated.

The plan in numbers

Duration
8 weeks
Runs per week
4
Weekly volume
3h 30m → 4h 26m
Longest run
2h

Week 1 starts at 3h 30m and volume builds to 4h 26m in week 5, the heaviest of the plan.

A typical week has 4 runs, and the longest session reaches 2h (Long, week 6).

Over the final 3 weeks volume drops from 4h 26m to 1h 8m so you arrive at the race rested.

Race day (13 mi · 25 min) falls on Sunday of week 8; the week holds 1h 8m of running before it.

There are 2 tune-up races on the way to the goal race.

Key workouts

The quality sessions that come up most in this plan:

  • Interval8 sessions across 8 weeks
  • Long7 sessions across 7 weeks
  • Threshold6 sessions across 6 weeks

Who it's for

Intermediate level. To start safely you should already be running about 3h 30m per week and be comfortable with a 1h 20m session — that is what week 1 asks for.

Week 1 — workout preview

3h 30m this week

MonDay 1
Interval

50 min

TueDay 2
Rest
WedDay 3
Recovery

40 min

ThuDay 4
Threshold

40 min

FriDay 5
Rest
SatDay 6
Rest
SunDay 7
Long

1h 20m

Week 5 — the heaviest of the plan

4h 26m this week

MonDay 29
Interval

1h 1m

TueDay 30
Rest
WedDay 31
Recovery

45 min

ThuDay 32
Threshold

50 min

FriDay 33
Rest
SatDay 34
Rest
SunDay 35
Long

1h 50m

Plan Structure

8 weeks · 32 workouts · 24 rest days

W1
W2
W3
W4
W5
W6
W7
W8
Interval
Recovery
Long
Threshold
Race
Rest

See the full plan

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