7 Half Marathon Tips I Wish I Knew Before My First Race

Nobody is born knowing how to run a half-marathon. Not the people who make it look effortless, not the ones with the fancy watches, not your friend who won't stop talking about their split times. Everyone who's ever crossed 13.1 miles started exactly where you are: slightly nervous, slightly under-informed, and quietly wondering if they've made a terrible mistake.

You haven't. That's exactly why we pulled together these half marathon tips - a handful of things that would've saved us a lot of grief the first time around, the kind of stuff nobody mentions until you learn it the hard way, usually somewhere around mile 9. So here it is, the cheat sheet we wish someone had handed us. Browse our race-day essentials and steal these seven half marathon tips freely.

Race morning has a way of eating time. There's parking that's farther than expected, a bag check line, a porta-potty line that is always longer than the porta-potty line should ever be, and actually finding your starting corral before the race starts.

Aim to arrive a full hour before your start (or 2 hours if your race of choice is RunDisney). Use that buffer to visit the porta-potty (twice — everyone pees more than they expect when adrenaline shows up), drop your bag, and locate your corral without sprinting to it. Nothing spikes your heart rate like realizing you're on the wrong side of 3,000 people. A calm, boring warmup is the goal. You want your nerves saved for the fun part.

Here's the trap: the first mile will feel amazing. You're rested, you're hyped, and everyone around you is flying. So you fly too. And then somewhere around mile 8, you feel like you got hit by a Mack Truck.

Going out too fast is the single most common mistake most runners make, and it's a sneaky one, because the too-fast pace genuinely feels easy in the moment. Adrenaline is a liar. The pace that feels almost too relaxed in those opening miles is usually the right one. If you finish the first few miles thinking "I'm barely trying," congratulations - you're doing it right. You'll have plenty of runner left for the second half, which is exactly when you'll want it (and need it).

This one is a rule, not a suggestion. Race day is not the day to break in new shoes, test a sports bra you've never run in, try a new pair of socks, or sample a gel flavor you grabbed at the expo because it was free- or to grab fuel on the course you've never tried before.

Everything you wear and everything you eat on race day should have already proven itself on a long training run. New gear has a talent for revealing its flaws at the worst possible moment - a seam that rubs, a waistband that digs, a fabric that turns out to hold sweat like a sponge. The stuff you race in should be so familiar it's boring. Lay it all out the night before, head to toe, so morning-you doesn't have to make a single decision. (Not sure what actually holds up over 13.1 miles? Our race-day essentials are built and tested for exactly this.)

This is the big one, and it's the thing almost every first-timer gets wrong: 13.1 miles is long enough that you need to eat while you run. Your body stores enough quick energy for roughly 75 to 90 minutes of effort. Run past that on an empty tank and you meet "the wall" - that grim, legs-full-of-cement feeling that turns the last few miles into a slog. The fix is carbs, taken on purpose, before you need them.

Fuel early and on a schedule, not on a feeling. The classic mistake is waiting until you feel tired to eat - but by the time you feel it, you're already behind, and no gel works fast enough to dig you out. So don't wait. Take your first gel or chew around 20 minutes in, then keep going on a schedule: aim for 30 to 60 grams of carbohydrate per hour, which usually works out to one gel (most are 20–30g) every 20 to 30 minutes. Set it, and stick to it even when you feel great. Especially when you feel great.

Chase every gel with water - plain water, not sports drink or electrolytes. A concentrated blob of gel needs fluid to move through your stomach. Wash it down with a sports drink instead, and you've stacked sugar on sugar, which is a fast track to a queasy gut. Time your gels to land near an aid station so water is right there.

Now, the salt - because nobody warns you about sodium until they're nauseous. When you sweat, you lose sodium, and when that sodium drops too low, your stomach is often the first thing to complain. That mid-race wave of nausea a lot of runners chalk up to "bad gels" is frequently a sodium problem in disguise. For a half, aim to take in roughly 200 to 600 milligrams of sodium per hour, and front-load some before you start - a dose of electrolytes 60 to 90 minutes before the start helps you begin the race topped off rather than already behind.

The trick is getting electrolytes in without wrecking your stomach. Here's the part that surprises people: the electrolytes themselves rarely cause GI trouble. The usual culprits are how they're delivered - a mix that's too concentrated, artificial sweeteners and sugar alcohols, or citric acid hitting an empty stomach. If sports drinks have historically turned your gut against you, it's probably not the sodium; it's the formula. A cleaner electrolyte mix, or a drink diluted with a little more water, often solves it entirely. And as with everything else, practice it on your long runs first. Your gut is trainable, exactly like your legs - it just needs the reps. And IF what is available on the course tends to upset your stomach, we recommend diluting it with water (typically available at the same station).

There's a lot more where this came from - how to carry all of it without jingling like a vending machine, caffeine timing, dialing in your personal sweat rate. We will be going deep on the whole fueling picture starting next week. For now, just remember: early, on a schedule, with salt.

Of all the half marathon tips here, nailing your fuel plan is the one that changes your race the most.

Chafing is the great equalizer. It does not care about your pace, your training, or your dignity. Miles of repetitive motion plus sweat plus fabric equals friction, and friction eventually finds a spot you didn't know was vulnerable. The shower afterward is where you'll find out exactly where.

The good news: it's almost entirely preventable. Anti-chafe balm is your friend - apply it anywhere skin meets skin or fabric meets skin, then apply it to a few places you're sure you don't need it, because those are the ones that surprise you. Underarms, inner thighs, sports bra lines, waistbands, and yes, the spots we're too polite to name. (Also, don't forget your toes 😉.) Beyond balm, the right gear matters more than people expect: seams in the wrong place or fabric that clings when wet can turn a pleasant run into a slow negotiation with your own skin. (This is another reason "nothing new on race day" earns its spot.)

Everyone braces for the finish. Almost nobody warns you about the middle. Miles 7 through 10 are where the excitement has worn off, the finish still feels theoretical, and your brain starts making a surprisingly persuasive case for why you could just stop. This is normal. This is the actual race. The finish, when it comes, mostly carries itself - it's the middle you have to run through.

The best tool for those miles is embarrassingly low-tech: a mantra. A short phrase you repeat until your brain has something to hold onto besides the thought of quitting. It sounds silly right up until the moment it's the only thing keeping your legs moving. A few that have gotten us through:

• "Relentless forward progress." You don't have to be fast. You just have to keep going in the right direction.
• "This too is temporary." The bad patch will pass. It always passes. Ride it out.
• "I can do anything for one more mile." Shrink the distance until it's small enough to swallow. Never mind the finish - just get to the next mile marker, then do it again.

Pick one before race day and rehearse it on your long runs so it's ready when you need it. And if you'd rather borrow strength from outside your own head, write your name on your shirt. Strangers on the sidelines will scream it, and it genuinely, unreasonably works.

Somewhere along the way, a myth took hold that walking during a race means you didn't really run it. That myth is nonsense, and it's slowed down more first-timers than any hill ever has.

Strategic walking - a few seconds through each aid station so you can actually drink instead of wearing your water, a short 30-second walk break at the top of a brutal climb - can make you faster over 13.1 miles, not slower, because it keeps you from blowing up later. Plenty of experienced runners walk on purpose and finish strong precisely because they did. Your race, your rules. The clock does not know the difference, and neither will the finish line. It's still 13.1 miles. It still counts. You still did it.

None of this is about being fast or looking the part. It's about showing up on race day knowing what's coming, so the surprises are the good kind. You've done the hard part already - the training, the early alarms, the long runs nobody clapped for. This is just the cheat sheet for the last few pieces.

Now go get your 13.1. 

We'll be cheering.