Berlin Marathon 2026: Your Complete Race-Day Nutrition Plan

The BMW Berlin Marathon on September 27, 2026 is one of the fastest courses in the world — flat, fast, and famous for personal bests. But the course that gives you speed also gives you a nutrition challenge: 15 refreshment points spread unevenly, on-course gels at a single station, and September weather that can swing from 8°C to 22°C.

Your fueling plan shouldn't be an afterthought you Google the week before. It should be built around Berlin's specific course, your target finish time, and your body's actual needs. Here's how to do that.

What Berlin Provides on Course

Berlin's aid stations are well-stocked, but you need to know exactly what's where:

Water is available at all 15 refreshment points, starting around 5 km and roughly every 2.5 km after that.

Maurten Drink Mix 160 (a carbohydrate drink containing 40 g of carbs per serving) is available at six stations: approximately 9 km, 15 km, 20 km, 25 km, 30 km, and 36 km.

Maurten Gel 100 (25 g of carbs per gel) is available at one station only: 27.5 km.

Fruit and tea appear at the same six stations as the drink mix.

That single gel station at 27.5 km is the critical detail most runners miss. If your fueling plan depends on on-course gels, you're going to have a gap of 15+ km between your last gel and the next available one. You need to carry your own.

The Numbers You Need to Know

Before building your plan, you need three figures:

1. Your carbohydrate target per hour. Current sports science recommends 30–60 g/hr for most marathon runners, scaling up to 60–90 g/hr for well-trained guts using dual-source carbohydrates (glucose + fructose). If you haven't gut-trained above 60 g/hr, don't start on race day.

2. Your fluid target per hour. Most runners need 400–800 ml per hour, but this varies enormously based on your sweat rate, the temperature, and humidity. A cool Berlin morning (10°C) might require 400 ml/hr. A warm afternoon (20°C+) might demand 700 ml/hr.

3. Your sodium target per hour. A practical range is 300–600 mg of sodium per hour. If you're a heavy sweater or a salty sweater (white marks on your kit after long runs), aim for the higher end.

If you don't know your sweat rate, there's a simple test: weigh yourself before and after a one-hour training run in similar conditions to race day. Every kilogram lost is roughly one litre of sweat. Sweatr calculates this automatically from your Apple Watch or Garmin data, using your training history and the forecast conditions for race day.

Fueling Plan by Finish Time

These plans assume you've gut-trained to handle the listed carbohydrate intake and that you're carrying your own gels. Adjust the brand and type to whatever you've tested in training — never use a product on race day that you haven't rehearsed.

3:00 Marathon (4:16/km pace)

Time on course: 3 hours | Carb target: ~50–60 g/hr | Total carbs needed: ~150–180 g

You're moving fast, so every second counts. Minimise time at aid stations.

| When | What | Where | |------|------|-------| | 25 min (5 km) | First gel + water from aid station | Aid station ~5 km | | 50 min (11 km) | Second gel + sip of Maurten Drink Mix | Carry gel; Drink Mix at 9 km station if timed | | 1:15 (17 km) | Third gel + water | Aid station ~17.5 km | | 1:40 (23 km) | Fourth gel + water | Aid station ~22.5 km | | 1:58 (27.5 km) | On-course Maurten Gel + water | Aid station 27.5 km | | 2:20 (32 km) | Fifth gel + water | Aid station ~32.5 km | | 2:40 (37 km) | Sixth gel (optional, if stomach allows) + water | Aid station ~37.5 km |

Carry: 5 gels minimum. Fluid: Grab water at every other station. Sip Maurten Drink Mix at 20 km and 30 km if you can manage it on the move.

3:30 Marathon (4:59/km pace)

Time on course: 3.5 hours | Carb target: ~50–60 g/hr | Total carbs needed: ~175–210 g

| When | What | Where | |------|------|-------| | 25 min (5 km) | First gel + water | Aid station ~5 km | | 55 min (11 km) | Second gel + water | Carry gel; water from ~10 km station | | 1:25 (17 km) | Third gel + Maurten Drink Mix sip | Aid station ~15 km | | 1:50 (22 km) | Fourth gel + water | Aid station ~22.5 km | | 2:17 (27.5 km) | On-course Maurten Gel + water | Aid station 27.5 km | | 2:40 (32 km) | Fifth gel + water | Aid station ~32.5 km | | 3:05 (37 km) | Sixth gel + water | Aid station ~37.5 km |

Carry: 5–6 gels. Fluid: Drink at every station from 20 km onward. Use Drink Mix stations at 15, 20, 25, and 30 km for extra carbs.

4:00 Marathon (5:41/km pace)

Time on course: 4 hours | Carb target: ~50–60 g/hr | Total carbs needed: ~200–240 g

At this pace, you're on course longer, which means more total fuel and more opportunities to take in fluid. Use that to your advantage.

| When | What | Where | |------|------|-------| | 30 min (5 km) | First gel + water | Aid station ~5 km | | 1:00 (10.5 km) | Second gel + water | Carry gel; water from ~10 km station | | 1:25 (15 km) | Maurten Drink Mix sip | Drink Mix station at 15 km | | 1:55 (20 km) | Third gel + Maurten Drink Mix | Drink Mix station at 20 km | | 2:25 (25.5 km) | Fourth gel + water | Aid station ~25 km | | 2:37 (27.5 km) | On-course Maurten Gel + water | Aid station 27.5 km | | 3:05 (32.5 km) | Fifth gel + water | Aid station ~32.5 km | | 3:25 (36 km) | Sixth gel + Maurten Drink Mix | Drink Mix station at 36 km |

Carry: 5–6 gels. Fluid: Drink at every station from 15 km onward. You have more time, so take full sips rather than rushing through stations.

4:30 Marathon (6:24/km pace)

Time on course: 4.5 hours | Carb target: ~50–60 g/hr | Total carbs needed: ~225–270 g

This is where most runners underestimate their needs. You're out there longer, burning more total energy, and your glycogen stores deplete further. You need more fuel than a 3:00 marathoner — not less.

| When | What | Where | |------|------|-------| | 30 min (5 km) | First gel + water | Aid station ~5 km | | 1:00 (9.5 km) | Second gel + Maurten Drink Mix | Drink Mix station at 9 km | | 1:30 (14 km) | Third gel + water | Aid station ~15 km | | 2:00 (18.5 km) | Fourth gel + Maurten Drink Mix | Drink Mix station at 20 km | | 2:30 (23 km) | Fifth gel + water | Aid station ~22.5 km | | 2:56 (27.5 km) | On-course Maurten Gel + water | Aid station 27.5 km | | 3:15 (30.5 km) | Sixth gel + Maurten Drink Mix | Drink Mix station at 30 km | | 3:50 (36 km) | Seventh gel + Maurten Drink Mix | Drink Mix station at 36 km |

Carry: 6–7 gels. Fluid: Drink at every station. You have time to walk through aid stations without losing significant time — use that.

5:00 Marathon (7:07/km pace)

Time on course: 5 hours | Carb target: ~50–60 g/hr | Total carbs needed: ~250–300 g

Five hours of running demands serious fueling discipline. The most common mistake at this pace is thinking "I'm going slowly, so I don't need as much." The opposite is true.

| When | What | Where | |------|------|-------| | 30 min (4 km) | First gel + water | Carry gel; water from first station | | 1:00 (8.5 km) | Second gel + Maurten Drink Mix | Drink Mix station at 9 km | | 1:30 (12.5 km) | Third gel + water | Aid station ~12.5 km | | 2:00 (17 km) | Fourth gel + Maurten Drink Mix | Carry gel; aim for 15 or 20 km Drink Mix station | | 2:30 (21 km) | Fifth gel + Maurten Drink Mix | Drink Mix station at 20 km | | 3:00 (25.5 km) | Sixth gel + water | Aid station ~25 km | | 3:15 (27.5 km) | On-course Maurten Gel + water | Aid station 27.5 km | | 3:45 (31.5 km) | Seventh gel + Maurten Drink Mix | Drink Mix station at 30 km | | 4:15 (36 km) | Eighth gel + Maurten Drink Mix | Drink Mix station at 36 km |

Carry: 7–8 gels. Fluid: Drink at every single station. Walk through them if you need to. Your priority is getting fuel in, not saving 10 seconds.

Three Rules for Berlin Race Morning

1. Eat your pre-race meal 3–4 hours before your wave start. Berlin's first wave is at 8:45 a.m., which means eating around 5:00–5:45 a.m. Stick to what you've practised: toast with honey, a banana, porridge — whatever your gut knows. Aim for 1–2 g of carbs per kg of body weight.

2. Pre-load with electrolytes, not just water. Drink 500 ml of an electrolyte solution (aim for 1,000–1,500 mg of sodium) in the 90 minutes before the start, finishing at least 30 minutes before your wave. This raises your plasma volume and gives you a buffer against early dehydration.

3. Take your first gel before the start gun. Consume one gel 10–15 minutes before your wave releases. This tops off your blood glucose and means your first on-course gel isn't hitting an empty stomach.

What to Do If It's Warmer Than Expected

Berlin in late September can range from 8°C to 22°C. If race morning is warmer than your training conditions, make three adjustments:

Drink more. Increase your fluid intake by 200–300 ml per hour compared to your cooler-weather plan. Hit every water station, not every other one.

Slow your gel intake slightly. Heat slows gastric emptying. If you normally take a gel every 30 minutes, push it to every 35. Better to absorb less than to vomit at km 30.

Add sodium. If you sweat heavily in heat, carry salt capsules (200–300 mg sodium each) and take one every 45–60 minutes on top of your regular electrolyte intake.

Why Generic Plans Break Down

Every plan above is based on finishing time — and that's already a better starting point than "take a gel every 45 minutes." But finishing time is still a proxy. What actually determines your fueling needs is your body: your weight, your sweat rate, your gut tolerance, your carbohydrate oxidation rate, and the specific conditions on race day.

Two runners finishing Berlin in 4:00 can have wildly different hydration needs if one weighs 60 kg and sweats 800 ml/hr while the other weighs 85 kg and sweats 1,200 ml/hr. The heavier, sweatier runner needs nearly 50% more fluid and sodium.

This is where your wearable data becomes genuinely useful. Your Apple Watch, Garmin, or Strava account holds months of training data — heart rate, pace, duration, conditions. Sweatr pulls that data and builds a fueling plan calibrated to your body and your race, not to an average runner finishing in a similar time. It adjusts for the forecast temperature in Berlin on September 27, your personal sweat profile from training, and the specific aid station layout on the course.

If you've built your plan manually using the tables above, you're already ahead of most runners on the start line. If you want a plan that's built from your actual data, Sweatr calculates it in minutes — try it free before race day.

The Week Before: Lock It In

You have the plan. Now protect it.

Don't change gels in the final week. Whatever you've been training with is what you race with. Even if your running buddy swears by a different brand.

Do a final shakeout run with your race-day fuel. Three to four days out, run 30–40 minutes at an easy pace and take one gel with water, exactly as you would on race day. This is a systems check, not a training run.

Pack more than you need. If your plan calls for 6 gels, pack 8. If you drop one, spill one, or your stomach rejects one, you have a buffer. Tape two to the inside of your race bib as emergency backup.

Lay out your fuel kit the night before. Gels, salt capsules, electrolyte tabs, and your pre-race drink — all in one place. Nothing gets forgotten at 4:30 a.m.

Berlin's course is built for fast times. Your nutrition plan should be built for your body. Get that right, and the flat streets and the crowd through the Brandenburg Gate will do the rest.