Running Plan Review Hal Higdon Ultramarathon: 50 Miles

Does it build you up smartly?

A long plan earns its length by changing as it goes. Early on, the running builds a base. Later, the work shifts toward what the race will ask, and at the end it eases off so you arrive fresh. Plans that vary their emphasis from one block to the next race better than plans that keep the same load from first week to last.

Higdon's choices make sense for this race. A fifty-miler is run slow and long, so the most specific work is time on your feet at a steady effort, and that is what the plan grows. The weekly running and the long runs build across 34 weeks, and lighter weeks come often: 8 of them before the taper begins. They sit in sensible places, too. Lighter weeks let the tiredness clear so your body can absorb the running that came before, and here one comes just ahead of the marathon-length run in week 18 and the 50K-length run in week 26, with an even lighter week after each.

But the kind of hard work never changes. The one hard run you meet in week 1, 5 miles at goal pace, is the same hard run you meet in week 33, stretched to 2 hours. At no point does a block of shorter, quicker work build the strength and economy the long efforts later draw on.

The sessions are each a single line, 5 miles at goal pace or a 4-hour run, and the schedule adds nothing to them. But this plan's runner is stepping up to a distance they haven't raced, which is exactly when a session's purpose and feel are worth spelling out.

Does it protect you from injury?

Partly. The plan spaces its hard days well and gives you plenty of lighter weeks, but it leaves strength and warm-ups off the schedule and asks for some steep climbs.

Sharp jumps in weekly running raise injury risk, and many injuries that look gradual actually begin abruptly, often set off by a training error in the week before. This plan has three places to watch. Week 20 is the sharpest: you come back from the marathon-length run and a near-empty week straight into a full one, with an hour at goal pace on Saturday and a long Sunday after it. Week 24 adds 2 hours to the Sunday run in one go. And the final build grows three weeks running, up to the 6-hour Sunday.

Those late weeks are where your body's timing matters most. Heart, lungs and blood adapt within days to weeks, while tendons and bone take weeks to months. By week 29, your aerobic fitness will likely be ready for a 6-hour Sunday. Your Achilles may still be catching up.

Strength training is missing too. The book offers general guidance on stretch and strength days, but no program, and nothing on the schedule. It deserves a place, since strength work lowers injury risk in sport more than stretching does. No session has a warm-up written into it either, including the long runs at goal pace.

The book does help you spot trouble. Its chapter on avoiding injury lists warning signs of overtraining, among them heavy legs and a raised morning pulse, and it covers pool running as a way to keep training while you heal. Read it before week 20. A low-grade ache that lingers from run to run appears to raise the odds of a bigger injury, and in a plan this long, easing back when one appears can cost you a few days instead of the race.

What happens when you miss a day?

The hardest miss in this plan is a weekend. Say a 5-hour Sunday falls through in week 24. Should it be made up midweek, skipped, or folded into the next long run? In a plan where the weekends carry most of the training, that's the decision that matters most, but neither the schedule nor the book answers it. The book only implies which runs come first.

Weekday misses are easier to absorb. Monday and Friday are off every week, so a lost Wednesday has an open day to move to. The book allows swapping days, and says one missed day is fine but never two in a row.

The plan also leaves your goal pace to you. Every Saturday hard run is at goal race pace, and the book helps set that pace from workouts, a short race or a past marathon. Turning that into a pace you can hold for fifty miles is a judgment you make alone. But there's no effort scale or heart-rate range on any workout to check that judgment against over the months of training.

Will it get you ready for race day?

Yes. Fifty miles asks for something a marathon doesn't, and this plan trains it directly.

What carries you through the second half of an ultra isn't speed. It's how well your legs keep working after hours of running. In runners who already have a base, added running tends to build durability more than a bigger engine: muscles that use oxygen better, connective tissue that tolerates more, legs that resist fatigue. Long runs are the core of it. Even for the marathon, shorter, faster sessions can't stand in for them, and fifty miles only raises that bar.

The plan builds toward the race through three checkpoints. On three Sundays the long run reaches a race distance: 13.1 miles in week 9, 26 in week 18 and 31.1 in week 26. Each gets lighter running in the days before it, the way a race would, and the last two are followed by a very light week. So when you line up for the fifty-miler, you've already run a marathon and a 50K in training. The race is the next step on a path you've walked, not a leap past everything you know.

From week 19, the weekends become pairs: Saturday long, Sunday longer, the second day run on legs that remember the first. They grow until week 31 asks for 2.5 hours at goal pace and then 6 hours the next morning. The goal-pace runs have grown the whole way, from 5 miles in week 1, so by race day the effort you plan to hold is one you've held for hours.

Then the plan backs off. After the 6-hour Sunday, the weekends shrink to 3 hours each, then 2, and race week is 3 short runs before the start. A structured taper lasting one to three weeks improves race performance compared with training straight through, and this one gives you the full 3.

Are the workouts varied enough?

In the easy running, yes. In the hard running, no: every hard run is the same kind of run, and the extras that keep legs quick and strong are missing.

Easy running makes up most of a runner's week, and it forms the base that carries the harder training. Close to nine of every ten miles in this plan are easy, and it uses five kinds of run: easy days, a longer midweek run, long runs, runs at goal pace and the race itself. Each one is simple to read and simple to do.

But the hard running has one gear. All 16 hard sessions are steady stretches at goal pace on a Saturday. There are no hill sessions, no shorter repeats and no strides, the short pickups of speed with easy running between them that many plans add to easy days. The book mentions strides as part of a warm-up, but they never appear on the schedule. That's a missed chance, because strides and short fast efforts make runners more efficient, so each step costs less energy. Over fifty miles, a small saving per step adds up.

For a runner whose goal is to finish, a narrow plan is easier to live with than it would be for a 10K. But no hills over 34 weeks is a real gap if your race climbs. Long descents and steep climbs are hard on legs that haven't practiced them, and the plan leaves that preparation to you.