McDonald's Pickle Boost: The Chain Is Bottling Its Pickle Juice — and Giving It Away Free at the Chicago Marathon
You have tried the burgers, the McFlurries and the new crafted drinks. But you have never tried this. McDonald's has taken the salty brine that its famous pickles swim in, poured it into small bottles, and named it Pickle Boost. It is free, it is only in Chicago, and it is only here for one marathon weekend — so if you blink, you miss it.
The launch is timed to the 48th Bank of America Chicago Marathon on Sunday, October 11, 2026. Runners use pickle juice to fight muscle cramps, and McDonald's wants to be the pit stop. Here is everything you need to know: where to get it, when, how many bottles, and what science really says about pickle juice.
- Pickle Boost is McDonald's own pickle brine, bottled as an on-the-go electrolyte drink.
- Friday, Oct. 9: free preview on the Lakefront Trail (2401 N. Lake Shore Dr.), 7 a.m.–1 p.m. CT.
- Sunday, Oct. 11: two free bottles per person at 5 Chicago McDonald's, 7 a.m.–3 p.m. CT.
- You don't need to be a runner — spectators and pickle fans can grab them too, while supplies last.
- No national rollout has been announced. It is a Chicago-only, one-weekend drop.
What Is McDonald's Pickle Boost?
Pickle Boost is simple: it is the same brine McDonald's uses for the pickles on its burgers, put into bottles for the first time. McDonald's calls it a quick, salty boost for athletes, and it is pitching it at one of the biggest marathon weekends in the United States.
Reports say the giveaway comes in small 2-ounce bottles. McDonald's itself has not published the bottle size, the sodium content, or a nutrition label, so treat it as a fun taste test, not a sports drink with a spec sheet.
“When it comes to pickles, we'll always go the extra mile.
— McDonald's, Pickle Boost announcement
Pickle Boost by the Numbers
Where and When to Get Free Pickle Juice in Chicago
McDonald's is giving fans two chances to try Pickle Boost. Both are free and both run while supplies last, so earlier is better.
Pickle Boost Preview on the Lakefront Trail
At 2401 N. Lake Shore Drive, aimed at runners doing their last easy "shakeout" run before the race. This is the first public taste of the drink.
Race-Day "Pit Stops" at 5 McDonald's Restaurants
Runners and spectators can walk in and grab two bottles each, free, at the locations below.
The 5 Chicago McDonald's Locations Giving Out Pickle Boost
| # | Address | Race-day hours |
|---|---|---|
| 1 | 2635 N. Clark St. | 7 a.m. – 3 p.m. CT |
| 2 | 1563 N. Wells St. | 7 a.m. – 3 p.m. CT |
| 3 | 600 N. Clark St. Flagship | 7 a.m. – 3 p.m. CT |
| 4 | 203 N. LaSalle St. | 7 a.m. – 3 p.m. CT |
| 5 | 207 E. 35th St. | 7 a.m. – 3 p.m. CT |
Fun detail: 600 N. Clark St. is McDonald's Chicago Flagship, the eco-friendly restaurant that replaced the famous Rock 'N Roll McDonald's in 2018. McDonald's is also a hometown company — its global headquarters has been in Chicago's Fulton Market district since 2018 — so this stunt is a home game.
Does Pickle Juice Really Help With Muscle Cramps?
Pickle juice is an old trick in sports. It is packed with sodium, an electrolyte you lose when you sweat, and some runners swear a small sip stops a cramp fast. It is also tiny and easy to carry — much easier than a 20-ounce sports drink in the middle of a race.
At least one study found that a small amount of pickle juice relieved muscle cramps better than plain water.
Another study found no evidence that pickle juice helps cramping. The science is still mixed — even McDonald's calls it a "rumored remedy."
Why McDonald's Picked the Chicago Marathon
A huge, fast race in McDonald's own backyard
The Chicago Marathon is one of the World Marathon Majors and one of the largest races on Earth, with around 50,000 runners and more than 52,000 finishers in 2024. Its flat, fast course has produced world records — and in 2025, Jacob Kiplimo won in 2:02:23 while Conner Mantz broke the U.S. marathon record in 2:04:43.
Pickles are having a moment
Pickle-flavored everything has been trending for years, from pickle snacks to pickle sodas at rival chains. McDonald's pickles have always split fans into "extra pickles" and "no pickles" camps. Pickle Boost turns that debate into a free, shareable stunt — and gives the brine a second job instead of going down the drain.
Will Pickle Boost come to your city?
Not for now. McDonald's has not announced any plan to sell Pickle Boost or bring it to other cities. If you are not in Chicago this weekend, the jar in your fridge is still your best bet.
❓ Frequently Asked Questions
What is McDonald's Pickle Boost?
It is the brine McDonald's pickles are packed in, poured into small bottles and handed out free in Chicago during the 2026 Chicago Marathon weekend as an on-the-go electrolyte drink.
Where and when can I get Pickle Boost?
Friday, Oct. 9, on the Lakefront Trail at 2401 N. Lake Shore Dr. (7 a.m.–1 p.m. CT), and Sunday, Oct. 11, at 2635 N. Clark St., 1563 N. Wells St., 600 N. Clark St., 203 N. LaSalle St. and 207 E. 35th St. (7 a.m.–3 p.m. CT).
Is it really free? Do I need to be running?
Yes, it's free, and no, you don't need a race bib. On race day anyone can pick up two bottles at the participating restaurants, while supplies last.
Does pickle juice actually stop cramps?
The research is mixed: one study saw faster cramp relief than water, another found no benefit. It is also very high in sodium, so check with a doctor if you watch your salt.
Will Pickle Boost be sold nationwide?
No wider rollout has been announced. For now it is a Chicago-only promotion for marathon weekend, Oct. 9–11, 2026.
McDonald's Pickle Boost is part sports drink, part viral stunt: free bottled pickle brine for Chicago Marathon weekend, at the Lakefront Trail on Friday and five restaurants on Sunday. The cramp science is unsettled and the drink is very salty — but as a one-weekend, Chicago-only taste test, it is one of the strangest and smartest food drops of the year.
