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15K Race Day Checklist: Fuel, Pace and Pack for 9.3 Miles
What do you need on race day for a 15K?
A 15K is 9.3 miles, long enough that fuel starts to matter. Eat a carbohydrate breakfast two to three hours before, carry one or two gels you've tested, use anti-chafe balm, and arrive an hour early. Pace it as three 5Ks: easy, steady, then race, and take water at the aid stations.
A 15K is 9.32 miles (race distances in miles), and it’s the distance where a race-day plan has to grow up. A 10K can be run on breakfast and water alone. At 9.3 miles, most runners are on the course for 75 minutes to two hours, long enough to need carbohydrate during the race, to chafe in places a 10K never found, and to pay heavily for a fast first mile. The Boilermaker in Utica, New York, and the Gate River Run in Jacksonville, Florida, are two of the country’s best-known 15Ks, and plenty of smaller races add one alongside a 5K or half marathon.
Work through the list below the night before and again on race morning. Your ticks stay on this device.
The week before
- Confirm the start time, start location, packet pickup hours and whether there’s a gear check
- Read the course map: where the hills are, and where the water and any sports drink or gel stations are
- Decide on your fuel and practice it on one more run: which gel, and when you’ll take it
- Keep your last hard workout five days out, then run easy
- Eat normally, with a little more carbohydrate in the last two days
The night before
- Pick up your packet if pickup is before race day
- Pin your bib to the front of your shirt with four safety pins, leaving any timing chip on the back uncovered
- Lay out shoes, socks, shorts or tights, shirt, sports bra, hat, watch, gels and anti-chafe balm
- Charge your watch and phone
- Eat a carbohydrate-centered dinner you’ve had before a long run: pasta, rice, potatoes, bread. Keep fat, fiber and spice modest
- Set two alarms
Race morning
- Eat a carbohydrate breakfast two to three hours before the start: oatmeal with banana, a bagel with honey or peanut butter, toast and juice
- Drink 12 to 16 ounces of water early, in line with the American College of Sports Medicine’s 5 to 7 milliliters per kilogram at least four hours before exercise (ACSM position stand on fluid replacement), then sip until the start
- Have your usual coffee
- Put on anti-chafe balm: thighs, underarms, sports bra or waistband lines, and anywhere your shirt rubs
- Use the bathroom before you leave
- Arrive an hour before the start
What to bring
- Bib, already pinned, plus spare safety pins
- Timing chip, if it isn’t on the bib
- Shoes and socks you’ve done long runs in
- One or two gels (or chews) you’ve used in training, in a pocket or belt
- Anti-chafe balm
- A throwaway layer for the start. Many races collect and donate dropped clothing
- Gear check bag with your post-race clothes, if the race offers gear check
- Water bottle for before the start
- Phone, ID, a card and your key
- Sunscreen and sunglasses, or gloves and a hat
- A dry shirt, a warm layer and a snack for after
At the start
- Bathroom line first
- Warm up with 10 minutes of easy jogging and a few strides. At 9.3 miles you can let the first mile finish the job
- Drop your gear bag before the gear check deadline
- Line up with runners of your pace
- Start your watch as you cross the mat
During the race: run it as three 5Ks
A 15K splits neatly into three 5Ks, and each gets its own job:
- First 5K: easy. Run it at goal pace or 5 to 10 seconds per mile slower. It should feel like you’re holding back
- Second 5K: steady. Settle into goal pace. Take your first gel at about 40 minutes, with water
- Third 5K: race. Mile 7 is where a 15K gets hard. If you still feel good at mile 7, start to push, and run the last 0.3 miles with whatever is left
On fuel: guidelines from the American College of Sports Medicine suggest 30 to 60 grams of carbohydrate an hour for efforts of one to two and a half hours (ACSM nutrition and athletic performance). A typical gel has 20 to 25 grams, so one gel at about 40 minutes covers a 75- to 90-minute race. If you’ll be out closer to two hours, take a second at about 80 minutes. Take every gel with water, and don’t use a brand for the first time on race day.
| 15K finish time | Pace per mile | Pace per kilometer | Each 5K |
|---|---|---|---|
| 1:05:00 | 6:58 | 4:20 | 21:40 |
| 1:15:00 | 8:03 | 5:00 | 25:00 |
| 1:30:00 | 9:39 | 6:00 | 30:00 |
| 1:45:00 | 11:16 | 7:00 | 35:00 |
| 2:00:00 | 12:52 | 8:00 | 40:00 |
After you finish
- Keep walking for 10 minutes
- Drink water or sports drink, and eat something with carbohydrate and protein within a couple of hours
- Get into dry clothes quickly; you’ll cool down fast after 9 miles
- Check for chafing or blisters and clean them
- Take two or three easy days before your next hard run
Where the 15K fits
A 15K is the bridge between short races and the half marathon. If you’re coming up from a 10K, what’s new is fuel during the race and anti-chafe; the rest of the 10K race day checklist carries over. If a half marathon is your goal, a 15K three to five weeks before it is a full dress rehearsal for the half marathon race day checklist: same breakfast, same gels, same shoes.
Another distance with a similar feel is 10 miles. The Cherry Blossom 10 Miler guide covers one of the biggest in the country.
Find a 15K
Bib Scouts’ distance filter covers the 5K, 10K, half marathon and marathon. 15Ks are listed under Any distance, and each race card shows every distance the race offers:
- Races by date, nationwide or in one state
- Races near you, by ZIP code and driving distance
- Fast and flat races for a personal record
- Spring half marathons, if the 15K is a tune-up
Quick answers
How many miles is a 15K?
A 15K is 15 kilometers, or 9.32 miles, usually rounded to 9.3. It sits between a 10K (6.2 miles) and a 10-mile race.
Do you need a gel for a 15K?
Most runners do. A 15K takes most people between 75 minutes and two hours, and sports nutrition guidelines suggest 30 to 60 grams of carbohydrate an hour in efforts of one to two and a half hours. One gel at about 40 minutes, and a second at about 80 minutes if you'll be out that long, covers it.
How long does it take to run a 15K?
At 10-minute miles a 15K takes about 1:33. Faster runners finish in about an hour, and walkers in about three hours. The pace table on this page converts finish times to pace.
Is a 15K a good tune-up for a half marathon?
Yes. Run three to five weeks before a half marathon, a 15K is close enough in length to test your fueling, gear and pacing, and short enough to recover from quickly.
How do you find 15K races on Bib Scouts?
Search Races by Date or Races Near Me with the distance set to Any distance. Each race card lists every distance the race offers, so 15Ks show up alongside the 5K and 10K at the same event.