Running Plan Review Greg McMillan 10K: Intermediate (Endurance Monster)

Does it build you up smartly?

The plan builds for 7 weeks before it gives you a lighter one. Your weekly running grows a little at a time through week 6, jumps in week 7, and only then eases off in week 8. After that, the lighter weeks come regularly, in weeks 10 and 12. The book itself allows a down week every fourth week, but the schedule doesn't print one, so taking it early means rearranging the weeks yourself. That matters, because a lighter week lets built-up fatigue clear so the body can absorb the work before it, and the first 7 weeks here never stop to do that.

The order of the work is good. The first 3 weeks are mostly easy, with strides and one steady run. Weeks 4 to 6 lengthen the steady runs and bring in tempo work. From week 7, race effort takes over, with steady and tempo runs mixed in, and the last 3 weeks taper toward the race. Training in stages like this produces better races than holding one load all the way through. McMillan doesn't name the stages on the page, but they're easy to see once you look.

But the schedule doesn't tell you why. A Thursday that reads 40 to 50 minutes of steady running doesn't say it's building toward the race effort sessions later on, so on a good day it's tempting to push it into something harder, and on a tired day to cut it without knowing what you've lost. The warm-ups that belong before each hard session aren't printed either. The book explains every workout and its warm-up in its own chapters, so the reasons are there, but only for runners who read ahead and remember them.

Does it protect you from injury?

Partly. The plan keeps its hard days apart, and the book teaches you to read your body, but 2 gaps on the schedule are yours to cover.

Strength is the first. The book gives you a sample routine and sends you online for the full program, but no session appears on the calendar. Deciding where it goes in a week built around Thursday and Sunday, and how to progress it over 12 weeks, falls to you. That's a real gap, because strength training substantially lowers injury risk in sport, more than stretching does.

Week 7 is the second. After 6 weeks of steady growth with no lighter week, your weekly running rises by more than a quarter, the long run stretches to 90 to 105 minutes, and Thursday brings your first 6 miles at race effort. For an Endurance Monster, the long run on its own is the comfortable part. The risk is the three arriving at once. Sharp jumps in weekly running raise injury risk, and many injuries that look like slow wear actually begin in a single week of too much. Week 8 is lighter, but week 9 returns almost to the same load.

What the plan does well here is spacing. Thursday and Sunday, the two hard days, always have easy running or rest between them. And the book gives one chapter to warning signs and how to respond to each, and another to recovery. Read them before week 7. An ache that lingers from one run to the next appears to raise the odds of an injury that stops you running, and the week your load jumps is the week to take one seriously.

What happens when you miss a day?

The plan tells you which days are optional, but not what to drop after that. Wednesday and Friday are clearly marked as runs you can skip, and the book lets you skip or move a key workout on a bad day. But there's no ranked order beyond that. In a week with room for only 3 runs, it's your call whether Thursday's session or Sunday's long run goes. And after a whole missed week, nothing says how to pick the plan back up.

Still, the plan gives you a lot of room to begin with. Monday is always off, and Wednesday and Friday can be a run, cross-training or rest, so a busy week often fits without breaking anything. Most runs come as ranges, 30 to 40 minutes or 60 to 75, and the book tells you to take the low end when you're tired.

The book also teaches you to judge each day for yourself. McMillan uses 4 training zones, adapted from his mentor David Martin, and zones anchored to how your body responds work better than fixed formulas. He asks you to check how you actually feel before a hard session and adjust the effort to match. That habit helps on any given Thursday, though it can't tell you how to rebuild a week you've lost.

Will it get you ready for race day?

Yes. Three Thursdays carry the race itself. Weeks 7, 9 and 11 each hold 6 miles at 10K race effort, nearly the whole race, in pieces that grow as you do: a 2-mile rep and 4 single miles first, then two 2-mile reps and 2 singles, and finally three 2-mile reps. By race day you've held race effort 2 miles at a time, again and again, on legs that already had a week of running in them.

The work underneath gets you there. Steady runs just below threshold effort grow from 20 to 30 minutes in week 2 to 40 to 50 by week 5, building toward the harder efforts. Tempo runs at a comfortably hard effort follow in weeks 6, 10 and 12, and progression runs finish fast in weeks 6, 9 and 11. Threshold fitness is specific to the effort you train it at, and these are the sessions that train it.

The 5K in week 10 does a useful job. You can run it as a time trial at your 10K goal effort or race a 5K, and either way it checks whether the goal you set at the start still fits the runner you've become.

The last 3 weeks are lighter, and race week holds about half the running of the biggest week. A 1 to 3 week taper improves race performance by 2 to 6 percent compared with training straight through. And endurance won't hold you back. The long run reaches 90 to 105 minutes in week 7, well past what a 10K asks of you.

Are the workouts varied enough?

Yes, and the mix fits a 10K.

About 4 of every 5 miles in this plan are easy, and easy miles are the base that carries harder training. Over them sit 14 hard sessions of different kinds: steady runs just below threshold effort, tempo runs, progression runs that finish fast, race effort in 1 and 2 mile pieces, and a 5K time trial. Most runners improve more when easy days stay easy and hard days are clearly hard than from a steady diet of medium effort, and the line here stays clean. Thursday is hard, some Sundays are, and the days between are easy.

Strides open the plan: 10 to 14 relaxed bursts of 20 seconds on the Thursdays of weeks 1 and 3. Short, fast efforts like these improve running economy, so each stride costs a little less energy.

From there, the sharpening comes from holding race effort for longer, not from running faster.