PACE&FUEL Race Guide
December World Athletics Platinum Label Prep

Valencia Marathon Fueling Calculator

Targeting a sub-3:00 or personal best on the world's fastest winter course? Calculate your exact grams of carbohydrates, fluid volume, and sodium needs to handle the flat tempo and midday sun.

Hours
Minutes
Carbs / Hour

65g

Total: ~211g
Fluid / Hour

550ml

Total: ~1.8L
Sodium / Hour

600mg

Total: ~1950mg

Recommended Valencia Race Kit

~£25 - £35
SiS Beta Fuel 6x Gels

40g dual-source ratio (1:0.8). Essential to bridge the 13km official station drought.

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SaltStick FastChews ~1950mg

50mg sodium chews to counter heavy sweat rates under dry Mediterranean coastal sun.

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Salomon Soft Flask 1.8L (4x 500ml)

Carry water to skip congested 5km stops and sip consistently between aid tables.

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Valencia Fueling Timeline & Intake Windows

Estimated burn: 2,750 kcal | Target: 3h 15m

Valencia Marathon Course Nutrition & PB Strategy Breakdown

On-Course Nutrition Setup

  • • Gel Partner: Enervit Gels (~18g to 20g carbohydrates per sachet).
  • • Gel Stations: Distributed only twice along the entire 42.2 km course (approx. km 19 and km 29).
  • • Liquid Refreshments: 33cl bottled water and Powerade cups available every 5 km.
  • • Elevation: Less than 40m total gain—one of the fastest four marathons in the world.

The "13km Enervit Drought" Trap

Enervit gel distribution ends around km 29. That means the entire closing 13.2 km (over 8 miles) of the race has zero gel handouts. If you do not carry your own gels, you will hit glycogen depletion as you enter the exposed avenues between km 35 and 38.

The Flat Cadence & Constant Muscle Loading

Unlike undulating courses where downhills provide micro-recovery for running musculature, Valencia is relentless. The course is dead flat from start to finish. Your stride frequency and muscle loading remain identical for thousands of consecutive strides. Maintaining consistent sodium and fluid intake is essential to prevent sudden neuromuscular cramping in your hamstrings and calves during the final 7 kilometers.

Managing Midday Temperature Rise

While Valencia starts around 10–12°C at 8:15 AM, clear skies and bright Mediterranean sunshine frequently push temperatures to 18–21°C by 11:30 AM. Runners who dress for winter running overheat. Utilize the 33cl water bottles at every 5km station to take steady sips and pour water over your neck and wrists to manage core temperature.