Houston Marathon 2027 fueling guide: aid stations, gels, and a plan for every finish time

Houston is flat, fast, and well supplied, with a refueling station every mile and a half. What breaks plans here is the weather. Race morning in mid-January can be near freezing with a cold wind, or warm and sticky enough to feel like spring. The same runner can need very different amounts of fluid and sodium in two different years, so the plan has to be flexible.

This guide uses what the organizers have published so far for 2027 plus the details that carry over from the last race, shows when you will reach each station at your pace, and gives three plans. The new athlete guide and corral times were not out when we wrote this, so check them again in January. The official 2027 refueling map does show the gel stations.

Houston Marathon 2027: the confirmed race facts

Your corral changes your morning more than your race. At the last race, corral gates closed at 6:40 a.m. for A and B and as late as 7:35 a.m. for F, so later corrals start well after the gun. That shifts your breakfast, and for runners near the six-hour limit it shifts how much time you have at the course cutoffs.

What is on the Houston course

Houston puts Gatorade first and water second at each station, with signs marking the last table of each. Gatorade Endurance has about 200 mg of sodium per 8 oz, roughly twice regular Gatorade, plus carbohydrate. It counts as fuel, but only as much as you actually swallow: a cup grabbed at speed is often 100 to 150 ml, and some of it ends up on your shirt.

The official 2027 refueling map shows Neversecond Energy Gels at two stations: mile 6.5 on Kirby Drive at Bissonnet, and mile 18.5 on Memorial Drive near Chimney Rock. The map does not say which gel it is. The race’s training page lists Neversecond C30 at 30 g of carbohydrate and 200 mg of sodium, so that is a fair planning number, but check the athlete guide. If you have not trained with Neversecond gels, carry your own gels and treat the course gels as spares.

When you will reach each station at your pace

Elapsed time from your start at an even pace. At this spacing you pass a station about every 10 minutes at 3:00 pace and every 20 minutes at 6:00 pace, so you never need to carry much water.

Pick your plan: three runner profiles

World Athletics’ consensus statement gives 30 to 60 g of carbohydrate per hour as the common marathon range and suggests trained runners try up to 90 g per hour for races over two and a half hours. Houston’s frequent stations make any of these easy to execute. The weather decides how much of it should come from Gatorade.

Racing it: at 80 g per hour, a 3:00 race needs about 240 g of carbohydrate. You pass a station about every 10 minutes, so pairing each gel with water is easy. Carry six to eight gels or a soft flask of concentrated mix, take the first at about 20 minutes, and then every 20 to 25 minutes by the watch. On a warm morning, take Gatorade at every second station for sodium and count its carbohydrate. Take the last gel by mile 22 so it is in before Allen Parkway.

Steady marathon: at 60 to 75 g per hour, a 4:00 runner needs 240 to 300 g. Gatorade can carry part of it: a real cup at every second station adds roughly 40 to 60 g over the race if you swallow most of it, and the two course gels (miles 6.5 and 18.5) can replace one or two carried gels. That leaves six to eight carried gels. Alternate: water with a gel at one station, Gatorade alone at the next. On a cold morning, taking both at every station can fill the stomach without adding much fuel.

Long day: a 5:30 to 6:00 runner from a late corral is on the course until early afternoon, often in the warmest hours. Aim for 40 to 60 g per hour in small doses every 15 to 20 minutes, and use Gatorade at most stations on a warm day. Watch the clock too. At the last race, the estimated cutoffs were about 9:40 a.m. at mile 7.6 and about 12:20 p.m. at mile 20, and runners behind pace at mile 7.6 were sent onto the half marathon course. Near six-hour pace from a late corral, keep station stops short.

Caffeine, sodium, and the weather

• Caffeine: the ISSN position stand supports 3 to 6 mg per kg about 60 minutes before exercise; 3 mg per kg is 210 mg for a 70 kg runner. Count your coffee and any caffeinated gels together, including any gel you take on course.
• Sodium: Gatorade Endurance supplies a fair amount, and so do Neversecond C30 gels (200 mg each) if you carry them. On a humid morning, salty sweaters should add a tested salt product, roughly 300 to 600 mg per hour.
• Humidity: Houston can have dew points that make sweat drip instead of cool you. On those days, slow the early pace, drink at more stations, and keep carbohydrate going in smaller doses.
• Wrappers: tear the top before the station so you can take a cup with the other hand.

Hydration for a January morning that could go either way

The race’s own records put a typical race day at a low of about 7 °C (45 °F) and a high of about 17 °C (63 °F). The normal temperature at 7 a.m. is about 8 °C (47 °F), rising to about 15 °C (58 °F) at noon, but normal race mornings range from near freezing to about 18 °C (65 °F), with dew points that can be high. Check the forecast 48 hours out and pick your row below. World Athletics warns against drinking more than you sweat, and finishing heavier than you started is a sign of overdrinking.

• Test your sweat rate in one cool and one warm long run in December.
• Hydration packs are allowed, but with a station every 1.5 miles you may not need one.
• The race encourages a reusable bottle you refill at stations; a small soft flask is enough.
• Seek help for confusion, severe headache, repeated vomiting, or collapse, whatever the clock says.

Breakfast for a 6:55 a.m. Start at the George R. Brown

The George R. Brown Convention Center opens at 5:00 a.m., and the race asks runners to arrive before 5:30 a.m., when downtown streets start to close. METRORail runs from about 4:45 a.m. Inside, you get warmth, water, Gatorade Endurance, gear check, and more than 200 toilets, but no listed food, and services start to close at 6:45 a.m.

• Three to four hours before 6:55, around 3:00 to 4:00 a.m.: a practiced breakfast of about 1.5 to 2.5 g carbohydrate per kg, such as a bagel with jam, a banana, and a sports drink.
• If that is too early for you: a smaller breakfast of about 1 g per kg at 4:30 to 5:00 a.m. and a bigger snack before bed.
• Inside the convention center, 45 to 60 minutes before your corral: a small, tested top-up such as half a bagel, a bar, or a banana.
• Ten to fifteen minutes before your start: an optional gel with water, only if used in training.
• Corrals C to F: your start is later, so move the top-up later too.

Course tactics: where Houston breaks fueling plans

• Miles 0 to 7.6, downtown to the split: shared with the half, crowded and fast. Take your first gel at about 20 to 30 minutes and do not follow half marathoners’ pace.
• Miles 8 to 13, after the split: flat and steady, with a station every 1.5 miles. Build the plan here.
• Just before mile 13, the Westpark bridge: the high point of the course, only about 14 m (45 feet) above the start. Take your gel on the flat before it.
• Miles 14 to 20, Post Oak to Memorial Park: long straight roads, easy to eat on. The course dips through the Memorial Park land bridge tunnels around miles 20 to 21.
• Miles 23 to 24, Allen Parkway: the hilliest stretch of the course, with small rises and falls. Your last gel should already be in by about mile 22.
• Miles 24.5 to 26.2, back downtown: the last station at 24.5, then no more stations before the finish.

The long-run rehearsal that makes the plan real

Use at least two long runs as full simulations. Wake at race time, eat the breakfast, wait about two hours, then run with the same belt, the same gels, and the same clock-based alerts. Try one rehearsal on a cool morning and one on a warmer or more humid day so you know how your drinking and gels change. If you plan to use the course gels, buy Neversecond gels, such as C30, and try two of them in a long run first.

Record fullness, nausea, thirst, and energy in plain words. “Gatorade plus a gel at the same station felt heavy at 90 minutes, fine when separated” tells you exactly what to change. The plan you can still follow on Allen Parkway is the right one.

Race-week Houston checklist

• Read the final athlete guide for the corral times, cutoffs, and which Neversecond gel is on course.
• Confirm your corral and plan breakfast, travel, and the top-up back from your start time.
• Lay out every carried gel, add one backup, and write grams and clock times on one card.
• Check the forecast 48 hours out and pick your weather row from the table above.
• Pack a throwaway layer for a cold start; the convention center is warm, the corrals are not.
• Eat nothing new from the expo on race day.

Frequently asked questions

Sources and update notes

1. 1Chevron Houston Marathon: Course InfoHouston Marathon CommitteeAccessed September 24, 2026; refueling stations every 1.5 miles, corrals, split at mile 7.6, time limit and pace team
2. 2Chevron Houston Marathon: Race Weekend ScheduleHouston Marathon Committee2027 race date and start times
3. 3Chevron Houston Marathon: TrainingHouston Marathon CommitteeGatorade Endurance sodium; Neversecond C30 carbohydrate and sodium
4. 42026 Athlete GuideHouston Marathon CommitteeCorral gate times, estimated cutoffs, and convention center services at the 2026 race
5. 5Chevron Houston Marathon: 2027 Refueling Stations MapHouston Marathon CommitteeAccessed November 6, 2026; Neversecond Energy Gels at the mile 6.5 and mile 18.5 stations
6. 6Chevron Houston Marathon: Safety and SecurityHouston Marathon CommitteeHydration packs allowed; no bags in corrals or on course; clear bag policy
7. 7Hourly Climate Normals, Houston Intercontinental AirportNOAA National Centers for Environmental InformationMid-January temperature and dew point normals, 1991 to 2020
8. 8Nutrition for Athletics: 2019 IAAF Consensus StatementWorld AthleticsCarbohydrate ranges, pre-race meal, and hydration guidance