Prague Half Marathon 2027 fueling guide: aid stations, Gatorade, and a plan for every finish time

Prague is one of the fastest half marathons in the world, and also one of the most scenic. The course runs along both banks of the Vltava, through the Old Town, and over several bridges, with a world-class elite field at the front. It is flat, but it is not simple: there are turnarounds, tight corners, and long stretches where the crowd pulls you along faster than you planned. A clear fueling plan keeps you steady when the city is trying to speed you up.

This guide is for every runner in the field, from a 1:20 racer to a first half marathon close to three hours. It starts with what RunCzech has confirmed for 2027, adds last year’s station details where the 2027 version is not out yet, shows when you will reach each station at your own pace, and gives three plans to choose from. Check the official race information again in race week; station details can change.

Prague Half Marathon 2027: the confirmed race facts

A Saturday start at 10:00 is kind to breakfast. You can sleep normally, eat at a sensible hour, and still have time to top up. Last year the line-up opened at 9:15 and the bag deposit in the technical area opened at 8:00. Your bib is not a public transport ticket, so buy one in advance if you take the metro to Vltavská.

What is on the Prague Half Marathon course

RunCzech describes six stations, from km 5 and then about every 2.5 km. Last year’s official course map shows two kinds: refreshment points with a cup symbol and water points. The kilometres below are our reading of that map against its km markers, so treat them as accurate to a few hundred metres, and check the 2027 map when it is published.

There is no gel on the course list. Everything you plan to take in gel form has to come from your own pockets. Gatorade is the only course carbohydrate apart from fruit and sugar, and a cup taken at half marathon pace is rarely more than a few mouthfuls. Count it as a top-up, not a full serving. Bananas and oranges are welcome for slower runners who walk through stations, but they are hard to eat at race pace.

RunCzech asks runners to use the whole length of each station, not just the first table, and to throw cups, gel wrappers, and bottles only in the marked drop zones. Throwing packaging anywhere else is not allowed. Keep empty wrappers in your pocket until the next zone.

When you will reach each station at your pace

Elapsed times at an even pace, using last year’s station positions. The 1:30 runner meets the 15 km refreshment point after about 64 minutes, close to the end of their race. The 3:00 runner meets it after more than two hours, when a gel there still has plenty of race left to help.

The limit is three hours from the start signal, not from when you cross the line. Last year’s map listed cut-off times for each kilometre for the first corridor, for example 10:52 at 5 km, 11:32 at 10 km, 12:11 at 15 km, and 12:59 at 21 km. RunCzech says the time it takes the field to cross the start is taken into account, but if you expect to need close to three hours, plan a margin.

Pick your plan: three runner profiles

World Athletics’ consensus statement suggests 30 to 60 g of carbohydrate per hour for events of about one to two and a half hours, and more only for longer races or runners who have trained for it. Research on multiple transportable carbohydrates shows intakes above 60 g per hour only absorb well with glucose plus fructose products and a trained gut. A half marathon is short enough that many runners do well at the lower end. These three profiles let you pick honestly.

Racing it: at 1:25, 85 g per hour is about 120 g in total, and none of it is a course gel. That is four 30 g gels or three larger ones, all in your pockets. Take the first one 10 to 15 minutes before the start, the next at about 20 minutes with water at 4.9 km, then at about 40 minutes at the 9.5 km refreshment point, and the last one at about 55 to 60 minutes with water at 12.6 km. A gel after 70 minutes at this pace has little time to help. Nobody should try 90 g per hour for the first time in Prague. Build it in long runs and race-pace sessions over several weeks.

Steady half: aim for 60 to 75 g per hour. For a 1:50 finish at 65 g per hour that is about 120 g: three carried gels plus a cup or two of Gatorade at the refreshment points. Take your first gel at about 25 minutes with water at 4.9 km, the second at about 50 minutes with water at 9.5 km, and the third at about 75 minutes, close to the 12.6 km water point. Add a few mouthfuls of Gatorade at 15 km if you have trained with it. Write the grams next to each item. It is the easiest way to see if a plan is too light or too heavy before race day.

Long day: close to three hours on your feet still needs fuel. Fifty grams per hour over 2:45 is about 140 g, more than many fast runners take. Small, frequent doses are kinder to the stomach: half a gel or two chews every 15 to 20 minutes, a few sips of Gatorade and a piece of banana at each refreshment point, and water at the water points. Keep your last carbohydrate at the 15 km refreshment point or the 18.2 km water point, so the last kilometres are not run on empty.

Caffeine, sodium, and the things runners forget

• Caffeine: the ISSN position stand supports 3 to 6 mg per kg about 60 minutes before exercise. For a 70 kg runner, 3 mg per kg is 210 mg. Use the low end, rehearse it, and count coffee, pre-race products, and caffeinated gels together.
• Sodium: the refreshment points offer salt, and Gatorade adds some. In a cool April race most runners do not need more, but heavy, salty sweaters can carry a salt product they have tested.
• Gels: there are none on the course list, so bring every gel you need plus one spare, and use a brand you have trained with.
• Wrappers: tear the top before a station and drop the empty wrapper in the next marked zone, not on the road.

Hydration for a cool Spring morning

Early April in Prague averages a high near 11 °C (52 °F) and a low near 3 °C (37 °F), with a wet day about one time in five. A 10:00 start means the coldest part of the morning is behind you, but the wait in the corridor can still be chilly. RunCzech suggests dressing as if it were 5 °C warmer than the forecast and leaving an old top at the start, which goes to people in need. World Athletics warns against drinking beyond sweat losses; finishing heavier than you started is a sign of overdrinking.

• Test your sweat rate in one cool and one mild run before race week.
• Choose your stations now; six stations do not need six decisions at race pace.
• Take cups from the far end of the station, where it is less crowded.
• Seek help for confusion, severe headache, repeated vomiting, or collapse, whatever the clock says.

Breakfast for a 10:00 start

A familiar carbohydrate-rich meal one to four hours before racing is the standard framework in the World Athletics consensus. With a 10:00 start you can eat at 6:30 to 7:00, which leaves three hours for digestion, and still have time for a small top-up later. If you travel to Prague, test a breakfast you can buy near your hotel, or bring your own.

• Three hours before the start: a practised meal such as toast with jam, a bagel, rice cakes, or a banana, about 1 to 2 g of carbohydrate per kg.
• Sixty to ninety minutes before: a small low-fibre top-up if breakfast was early and you know it sits well.
• Ten to fifteen minutes before the start: a gel, if you have used it in training. The first station is close to 5 km away.
• Keep caffeine at the dose and timing you know; race morning is not the day to double it.

Course tactics: where Prague tempts you

• Kilometres 0 to 4, from Holešovice along the river, over the Čechův bridge, and through the Old Town past the Rudolfinum: fast, crowded, and full of sights. Do not race the people around you. Your pre-start gel is doing the work here.
• Kilometres 4 to 9, across the Legií bridge and south on the left bank to the turnaround near Císařská louka: refreshment at about 4.9 km and water at about 7 km. Take your first gel with water, not on the turn.
• Kilometres 9 to 12, back north to the Jiráskův bridge, past the Dancing House, and south to the second turnaround near Výtoň: refreshment at about 9.5 km. This is the calm middle of the race, the best place for a gel.
• Kilometres 12 to 16, north along the river, through Národní and Na Příkopě, then through the Old Town to Pařížská: water at about 12.6 km and refreshment at about 15 km. Many corners here, so take your gel on a straight.
• Kilometres 16 to 21, east along the river past Karlín and over to Libeň, then back to Holešovice: water at about 18.2 km and nothing after it. The fuel should already be in.

The long-run rehearsal that makes the plan real

Use at least two key sessions as full rehearsals. One is a long run at the time of day you will race, with the same breakfast and the same gels. The other is a session with 10 to 14 km at goal pace, taking gels at the minutes you plan to use in Prague. Because there is no course gel, practise carrying the full race supply: four gels in a belt feel different from one.

The second rehearsal is where you simplify. If four gels feel like too many at 1:25 pace, use three bigger ones. If Gatorade plus a gel feels too sweet, take gels with water only. If you struggle to open gels at speed, tear the tops before each station. The best plan is the one you can follow at 17 km on the river, with the finish still out of sight.

Race-week Prague Half checklist

• Check the 2027 course map and runner information as soon as they are published and confirm the station kilometres.
• Confirm your start corridor on your bib and work out breakfast backward from 10:00.
• Pack every gel you need plus one spare; there are none on the course list.
• Write grams and timing on one card, matched to the stations you will use.
• Buy a public transport ticket for race morning; the bib is not a ticket.
• Check the forecast 48 hours out for cold and rain; adjust clothing and fluid, not the whole fueling plan.

Frequently asked questions

Sources and update notes

1. 1Generali Prague Half Marathon 2027RunCzechAccessed October 2, 2026; date and start, distance, sold-out status, maps from last year until the 2027 map is published
2. 2Generali Prague Half Marathon: Information for Runners (last edition)RunCzechSix stations from km 5, Mattoni water, Gatorade, fruit, salt, sugar, drop zones, three-hour limit, schedule, transport
3. 3Generali Prague Half Marathon Course Map (last edition)RunCzechRefreshment and water point positions, km markers, cut-off time for each kilometre
4. 4Generali Prague Half Marathon: Course DescriptionRunCzechLandmarks along the course by kilometre
5. 5Nutrition for Athletics: 2019 IAAF Consensus StatementWorld AthleticsCarbohydrate ranges by event length, pre-race meal, and hydration guidance
6. 6A Step Towards Personalized Sports Nutrition: Carbohydrate Intake During ExerciseSports Medicine (Jeukendrup, 2014), PMID 24791914Multiple transportable carbohydrates and intakes above 60 g per hour
7. 7International Society of Sports Nutrition Position Stand: Caffeine and Exercise PerformanceJISSN (2021), PMID 333880793 to 6 mg per kg dosing guidance
8. 8Average Weather in April in PragueWeather SparkEarly-April temperature and wet-day averages