How to Adjust Your Race Pace Strategy for a Hilly Course

You've trained hard, you know your goal pace, and you're confident in your fitness. Then the race profile comes up and there it is: a hill at mile 4, another at mile 9, and what the race website cheerfully describes as "undulating terrain" for the final 5k.

How do you pace that? Do you bank time on the flat sections? Push through the climbs and make up for it on the descents? Slow down to compensate?

Pacing a hilly course well is genuinely one of the more underrated race skills in running. Most runners either ignore the hills entirely and blow up, or overcorrect and lose too much time being cautious. Here's how to get it right.

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Why your flat-course pace does not translate directly to hills

On a flat road, maintaining a consistent pace requires a roughly consistent effort. On hills, the relationship between pace and effort breaks down completely.

Running uphill at your goal pace requires significantly more effort than running that same pace on the flat. Your heart rate spikes, your legs work harder, you burn through glycogen faster, and you accumulate fatigue at a rate that will come back to bite you later in the race. If you try to hold 4:45/km on a steep climb when that's your target pace, you'll almost certainly overcook it.

The solution used by elite runners and experienced coaches is to race by effort on hilly courses, not pace. Your goal is to keep your perceived exertion (and ideally your heart rate) consistent, even as your pace fluctuates around the terrain.

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The core principle: Effort-based pacing

On a hilly course, think of your target as a consistent effort rather than a consistent split.

What this looks like in practice:

• On the uphills: your pace will slow. That's fine and expected. Your effort should feel similar to your flat-course race effort, which means your pace might be 30-90 seconds per km slower depending on the gradient.
• On the flat sections: run at your target pace as planned.
• On the downhills: this is where you can make back time, but not by hammering the descent recklessly. More on this below.

If you're using a GPS watch, set it to display heart rate or effort rather than pace on hilly sections. Trying to hit a pace target on a climb will almost always result in going too hard.

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How much slower to run on uphills

There's no universal formula because gradient, surface, and individual running economy all vary. But as a rough guide:

Gentle rolling hills (1-3% gradient): Pace slows slightly. Effort stays consistent. Most runners won't need to adjust their race plan significantly.

Moderate hills (4-6% gradient): Expect to slow by 20-45 seconds per km compared to your flat pace. Focus on effort, shorten your stride, and keep your cadence relatively high rather than taking big powerful steps.

Steep climbs (7%+): Pace slows significantly. Some runners find it more efficient to power hike very steep sections in ultras or trail races, even if it feels strange. In road races, shorten your stride right down, lean slightly forward from the ankles (not the waist), and keep moving without redlining your effort.

The key is to arrive at the top of each climb feeling controlled, not gasping. If you're blowing up at the summit, you went too hard.

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How to run downhills properly

Descents are where hilly races are often won and lost, and most runners don't use them nearly as well as they could.

Don't brake constantly

A lot of runners tense up on descents, lean back, and effectively brake with every stride. This is hard on the quads, inefficient, and slower than it needs to be. Controlled downhill running requires relaxation, not resistance.

Lean forward slightly and let gravity help

A small forward lean from the ankles (not a dramatic lean from the waist) lets you work with gravity rather than against it. Your feet should land beneath your hips, not out in front of you.

Shorten your stride on steep descents

Counter-intuitively, a shorter, quicker stride is more efficient and safer on steep downhills than a long bounding stride. It reduces impact forces through the quads and gives you better control.

Use descents to make back time, but don't sprint

The downhill is your opportunity to recover pace relative to the effort you've put in on the climb. But bombing a descent at maximum effort has two problems: it trashes your quads (which you'll need later), and it dramatically raises injury risk. Let gravity do the work and run at a comfortably fast effort rather than an all-out sprint.

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The grade-adjusted pace concept

Some GPS watches and running apps now display grade-adjusted pace (GAP), which is an estimate of what your pace would be on the flat given your current pace and gradient. It's a useful tool for understanding your true effort on hilly terrain.

For example, if you're running at 5:30/km up a 6% gradient, your grade-adjusted pace might show 4:50/km, meaning you're actually working at a harder effort than your flat-course pace.

GAP isn't perfect (it's an estimate, not a measurement), but using it during training runs on hilly routes is a great way to develop intuition for how gradient affects your effort. If your target race pace is 5:00/km, aiming for a GAP of 5:00/km on climbs is a reasonable approach to effort-based pacing.

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Recalibrate your finish time expectations

If you're running a significantly hilly course, your finishing time will be slower than it would be on a flat course, even if your fitness and effort are identical. This is important to accept before race day rather than on it.

A rough rule of thumb: for every 10 metres of elevation gain per kilometre of race distance, expect to add roughly 8-10 seconds per km to your average pace. So a marathon with 500m of total elevation gain (about 12m per km) might cost you around 1-1.5 minutes compared to a flat marathon equivalent.

This is not a precise science, and variables like course profile (lots of short sharp hills vs. long gradual climbs) matter a lot. But recalibrating your goal time is smarter than arriving at the finish line disappointed because you chased a flat-course PB on a hilly course.

Consider setting two goals: a time goal adjusted for the course, and an effort goal (run the hills well, finish strong, don't blow up in the second half).

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Practise racing hills in training

The best preparation for a hilly race is, unsurprisingly, training on hills.

If you know your target race is hilly, try to incorporate similar terrain in your long runs and some of your quality sessions. The specific physiological benefits of hill running (stronger glutes, improved running economy, better neuromuscular coordination on varied terrain) only come from actually running hills.

If you're training in a flat area, a treadmill with an incline setting is a useful substitute for uphill training, though it doesn't replicate downhill running at all. You can also simulate downhill effort by finding any slight decline, or using the treadmill at a slight negative gradient if your machine allows it.

Beyond the physical preparation, practising effort-based pacing on hilly training runs teaches you what your race effort actually feels like when the terrain is changing. By race day, you want that skill to feel instinctive.

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Race day checklist for hilly courses

Before you race a hilly course, run through these:

Study the elevation profile in advance. Know where the major climbs are, roughly how long they are, and where the descents fall. Going into a race blind to the profile is unnecessary when the information is almost always available.

Adjust your time goal to the course. Be realistic about what's achievable. A hilly half marathon is not comparable to a flat half marathon PB attempt.

Plan your effort, not your pace. Decide in advance that you will let your pace drop on climbs and focus on feel instead.

Don't go out too hard on early flat sections. A common mistake on hilly courses is banking time on flat early miles, only to be completely emptied by the climbs later. Run the early flat sections at your planned effort, not faster.

Fuel and hydrate before the climbs. If you know a big hill is coming at mile 8, make sure you've taken on fuel by mile 6. Climbing on empty is brutal.

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The Bottom Line

Hilly courses reward patience, effort-based thinking, and smart preparation. The runners who blow up are usually the ones who tried to run even splits regardless of terrain, went too hard on the climbs, or arrived having never trained for the specific demands of the course.

Race by effort. Let your pace drop on the uphills. Use the descents efficiently without trashing your legs. And recalibrate your expectations so you're racing the course in front of you, not some imaginary flat version of it.

Do all of that, and hills go from something to fear to something you actually know how to handle.

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