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

Does it build you up smartly?

The surprise in this plan is where its hardest new work sits: inside the down weeks.

A plan builds best in stages, each with its own emphasis, and training in phases like that produces better races than holding one steady load. The order here is sound. Hills and short surges come first, then faster repeats and the first goal-pace work, then long runs that end at goal pace. Each stage gives the next something to stand on.

The book also builds in a down week every fourth week, because a lighter week lets fatigue clear so the body can absorb the work. The plan follows that rhythm in weeks 4 and 8: the easy runs shorten, and Tuesday's hard session becomes an easy run with optional strides. But Thursday doesn't ease. Week 4 brings the plan's first goal-pace session, 2 or 3 repeats of 3 miles. Week 8 brings its longest goal-pace repeats so far, 2 of 4 miles, and a long run that grows to 14 to 18 miles. So the down weeks drop the easy minutes and keep the work that tires you most. The first week where the total running clearly drops is week 11, after 10 weeks of building.

The sessions are also bare on the schedule. Each one gives the prescription, like 6 to 7 two-minute surges with a minute of jogging, but not what it's for.

Does it protect you from injury?

Partly. The plan keeps hard days apart, but new work keeps arriving in the biggest weeks.

Sharp jumps in training raise the risk of injury, and a jump isn't only about miles. Weekly mileage misses much of the strain that faster running adds. Week 4 shows why. The easy runs get shorter, but Thursday asks for 6 to 9 miles at goal pace, several times more hard running than any week before it.

Then the plan climbs fast. Week 5 has about a fifth more running than week 4, and it adds three new kinds of hard work at once: an 80 to 90 minute progression run, fast mile repeats, and a long run that ends at tempo effort. Week 10, the biggest week of the plan, brings the first unbroken goal-pace run, 6 to 8 miles, between an 80 to 90 minute steady Tuesday and a long run of 14 to 18 miles. Each of those is a fair session, but meeting a new one in a week when your total running climbs leaves your legs little room to adjust.

Strength is left to you. The book has a sample routine and points you online for the full program, but none of it is on the schedule, and finding room for it around three key days a week takes planning. Skipping it costs something, since strength training substantially lowers the risk of sport injuries, more than stretching alone.

What protects you here is spacing. A hard day is never followed by another, and Monday and Friday can always be rest. The book also teaches you to watch for warning signs and back off when something lingers. That habit pays, because a low-grade ache that won't clear appears to raise the odds of an injury that stops you running.

What happens when you miss a day?

Two optional days a week give a lost run somewhere to go. What a plan also needs is a rule for losing more than that.

But this one doesn't have it. Nothing on the schedule says what to do after a missed week. The book implies that the long run and the hard days matter most, but it never ranks them, so when only one hard day fits, the choice is yours.

Day to day, though, the plan gives you room. Nearly every session comes as a range, and the book tells you to take the low end when you're tired, and to skip or move a key workout on a bad day. McMillan builds his training around four effort zones, the kind of multi-zone system research favors for setting running intensity. He also asks you to judge which runner showed up and fit the session to that. It's training that treats you as someone who can read your own body.

Will it get you ready for race day?

Yes. This plan prepares you for the half marathon very well.

A half is long enough to need endurance and fast enough to need a strong threshold, the effort where hard but steady running starts to tip into breathing you can't settle. Threshold gains are specific to the pace you train them at, and race-pace work earns its keep when race pace sits near a threshold. For many runners, half marathon pace does.

The plan gives you that practice early and often. Goal pace first appears in week 4 as repeats of 3 miles, grows to 4-mile repeats in week 8, and becomes a single 6 to 8 mile run in week 10. Three long runs, in weeks 7, 9 and 11, end with 2 to 4 miles at goal pace, so you learn to hold race effort late in a long run. The book offers a 5K or 10K race in place of those runs, and racing beforehand may help you pace the real thing better.

The long runs reach 14 to 18 miles in weeks 8 and 10, so you'll have run farther than 13.1 miles more than once before race day. After week 10, the plan eases into a lighter week and then race week, with one short set of repeats to keep you sharp. A taper of 1 to 3 weeks makes runners a few percent faster on race day.

Are the workouts varied enough?

Yes. The hard days change shape from one week to the next.

Easy running mixed with clearly hard intervals and fartlek builds endurance better than steady, moderate running. About 85 percent of the running here is easy, and that easy volume is the base that lets the hard work pay off.

In the first weeks you're climbing hills for a minute or so and jogging back down, which builds strength in your stride without much speed. By the middle, you're running fast miles with a half-mile jog to collect yourself. Near the end, it's 6 to 8 miles straight at goal pace, a long stretch of one steady rhythm. The long run changes too: easy, then with a tempo finish, then with miles at goal pace.

After the first 3 weeks, Tuesday and Thursday rarely bring the same session two weeks running, so each one feels new. Short strides on easy days in weeks 4, 8 and 12, optional in the first two, keep your legs quick without adding fatigue.