Running Plan Review Greg McMillan Half Marathon: Intermediate (Combo)

Does it build you up smartly?

Partly. The hard work comes in a smart order, but the plan has only one real lighter week, and the schedule never tells you what a session is for.

A plan works best when each block sets up the next, with one kind of hard work mastered before a tougher one arrives. Training that shifts its focus in stages like this leads to better races than training that holds one load throughout. The order here is right. Uphill repeats come first. Longer repeats on the flat follow. Then the work turns to goal pace in the second half, when you're fit enough to hold it for miles at a time.

But the plan rarely lets up. Weeks 4 and 8 dip a little, but only week 10 eases off enough to count as a real recovery week. That week trims the weekdays and keeps the long run at 12 to 14 miles, tied for the longest of the plan, two weeks out from the race. A lighter week every few weeks lets the built up tiredness clear, so your body can absorb the work, and it lowers your injury risk compared with adding load every week. The book does let you make every fourth week a true down week, and weeks 4 and 8 are where that would land. But the schedule leaves that cut to you.

The schedule is also thin on the why. Each day says what to run, how many repeats, and how much jogging between them. It never says what that session is building or how it should feel. That explanation is in the book, in a chapter of its own. A runner who reads it will understand the plan. A runner who just follows the grid is running repeats without knowing what they're for.

Does it protect you from injury?

Injuries tend to show up after a jump. A sharp rise in weekly running raises the risk, and mileage isn't the whole story either. Speed, hills and intensity add stress that a weekly total misses, so a week that adds both miles and faster running asks more than its distance suggests.

Mostly, this plan protects you well. It builds without sudden spikes, and its hard days never sit back to back. But week 5 asks for two new things at once. It's the biggest rise in mileage of the plan, and it's also the week the first fast repeats of 1,600 meters arrive. Either change on its own would be easy to absorb. Together, they make week 5 the one to run with care, and the only thing before it is a slight dip in week 4, not a real lighter week.

Strength is missing from the schedule too. The book gives a sample routine and points you to a full program online, but no strength session appears on any day. With Thursday's repeats and Sunday's long run fixed, deciding which days take it is left to you. That's a real gap, because strength training lowers injury risk more than stretching or balance work.

When something does hurt, the book is a good guide. Its chapter on warning signs explains what a lingering ache means and how to respond, and a separate chapter covers recovery. That matters more than it sounds, because low grade aches that keep coming back appear to raise the risk of a real injury. Easing off when one appears costs a few days. Running through it can cost the race.

What happens when you miss a day?

Fairly well, but the schedule doesn't say what to drop when a week goes wrong.

When you miss a run or lose a week, two questions matter. Which session do you protect? And what do you do with the weeks that follow? The schedule answers neither. In weeks 7 and 9 there are three demanding days, and the book hints that the long run matters most, but it never sets out an order. Nothing says whether to repeat a missed week or skip ahead. Those calls are yours.

The plan makes up for a lot of that in how it's built. Wednesday and Friday are already optional, and on those days a bike ride or a day off is as much a part of the plan as a run. Most runs are a range of minutes, and the book tells you to take the low end when you're tired, and to move or skip a key workout on a bad day. A 30 minute run instead of 40 still counts. McMillan says so in writing, which is more permission than most runners give themselves.

He also teaches you to run by feel. The book uses four effort zones, adapted from his mentor David Martin, and zones anchored to your own physiological thresholds, rather than a percentage of a maximum heart rate, are the better supported way to set effort. It also asks you to check each day which runner showed up, the fresh one or the tired one, and adjust. A runner who learns that habit can coach themselves through a rough week, even when the schedule can't.

Will it get you ready for race day?

Yes. This plan builds exactly the fitness a half marathon asks for.

Coaches explain the half marathon through threshold: the effort past which fatigue starts to build fast and you can't hold on for long. In their telling, half marathon effort sits just under that line. Raise the line and your race pace comes up with it, and threshold rises from running at or near it.

That's where this plan spends its second half. Race work shows up in every week, and from week 6 it centers on goal pace: 2 mile repeats at it on Thursdays, and Sunday long runs that finish with a few miles at it. Those Sundays are the best rehearsal in the plan. Around them, the mileage peaks a little under 40 miles a week, a good load for an intermediate half, and the long run grows to 12 to 14 miles, so 13.1 isn't new on race day.

The finish is well judged too. The running eases off from week 10, and race week drops to short easy runs of 20 to 30 minutes, plus one short set of repeats on Wednesday to keep you sharp. A taper like that tends to make runners a few percent faster than holding the load steady to the end.

Are the workouts varied enough?

Runners improve most when the easy days are truly easy and the hard days are clearly hard. Easy running mixed with clearly hard work builds more endurance than long stretches at a steady, moderately hard effort, and keeping the two kinds of day separate is what lets each hard day count.

Follow the Thursdays and you can see the whole plan. Three weeks of uphill repeats. Then 1,000 meter repeats, then 1,600s, then 2 miles at a time at goal pace, then 1,200s. Later come a steady tempo run and more goal pace. Tuesdays and Sundays add their own range: progression runs that end fast, long runs that end at goal pace. After the opening hill block, Thursday rarely asks for the same thing two weeks running.

All of it sits on a large base of easy running, about 5 of every 6 miles. With an easy or optional day between every pair of hard ones, you reach each session with fresh legs, and a runner who likes to see something new on the schedule will find it most weeks.