Racepack
Fuel Planner

Not sure what to pack? Build a fuel plan around your session.

Choose your sport, duration and preferences. Get a suggested plan
and matching products.

BUILD MY FUEL PLAN Takes about 2 minutes. Optional details help refine your plan.

LET’S PLAN YOUR SESSION.

  1. 1 Your race & preferences
  2. 2 Your fuel & sodium plan

What are you preparing for?

Choose your distance, finish time, goal and conditions. Continue shows your gels, fuel calories and sodium starting estimate.

Sport
Which running distance?
Include caffeine?
Yes shows caffeine options. No excludes caffeinated products from your recommended pack.
Sensitive stomach?
Yes caps the starting target at 30 g/h. Always test the exact product in training.

Hydration & gels you already have

We calculate a sodium starting estimate from your race time, weather and intensity. You do not need to know your sodium requirement.

Sodium from selected gels and drink mix is counted automatically. Carbohydrate in drink mix reduces the gel count. If you also use sports drinks or other supplements, include them when reviewing your complete plan.

YOUR RESULTS WILL LOOK LIKE THIS.

Illustrative preview • Complete the planner for your own recommendation.

YOUR HALF MARATHON FUEL PLAN

Running 2–3 hours No caffeine
Before

Start with your familiar pre-race routine.

During

Spread your planned fuel across the session.

After

Rehydrate and eat a recovery meal.

Your result will show gel servings, fuel calories, a sodium reference and tablet or electrolyte quantities.

EXPLORE ENDURANCE BRANDS.

MAURTEN

Gels & drink mixes

MAURTEN
Complete the planner to see matching options.

SiS

Gels & hydration

SiS
Complete the planner to see matching options.

GU

Gels & hydration

GU
Complete the planner to see matching options.

aminoVITAL

Carbohydrate fuel options

aminoVITAL
Complete the planner to see matching options.

Tailwind

Carbohydrate & electrolyte mixes

Tailwind
Complete the planner to see matching options.

SaltStick

Sodium capsules & chews

SaltStick
Complete the planner to see matching options.

CrampFix

Optional cramp support

CrampFix
Complete the planner to see matching options.

Nuun

Electrolyte tablets

Nuun
Complete the planner to see matching options.

Skratch Labs

Hydration & carbohydrate mixes

Skratch Labs
Complete the planner to see matching options.

HIGH5

Gels & hydration

HIGH5
Complete the planner to see matching options.

LMNT

Electrolyte drink mixes

LMNT
Complete the planner to see matching options.

CLIF

Energy bars & chews

CLIF
Complete the planner to see matching options.

Gatorade

Sports drinks

Gatorade
Complete the planner to see matching options.

Myprotein

Endurance drink options

Myprotein
Complete the planner to see matching options.

Beet It Sport

Optional sports support

Beet It Sport
Complete the planner to see matching options.

Honey Stinger

Carbohydrate fuel options

Honey Stinger
Complete the planner to see matching options.

OTE

Endurance fuel options

OTE
Complete the planner to see matching options.

Hammer Nutrition

Fuel & hydration options

Hammer Nutrition
Complete the planner to see matching options.

Cadence Hydration

Hydration options

Cadence Hydration
Complete the planner to see matching options.

Pocari

Sports drink options

Pocari
Complete the planner to see matching options.

In Jelly

Carbohydrate jelly options

In Jelly
Complete the planner to see matching options.

Brand cards cover fuel, hydration and optional support. Only verified eligible products count toward your plan. CrampFix and other support products are not substitutes for carbohydrate or sodium. Brand inclusion does not confirm current stock.

MAKE IT YOURS.

SAVE YOUR PLAN. SHARE IT. TRAIN WITH IT.

Download a copy and review it before your session.

THE SCIENCE BEHIND YOUR PLAN.

How we calculate your plan

Published guidance: small carbohydrate amounts or mouth sensing for 45–75 minutes; 30–60 g/hour for 1–2.5 hours; up to 90 g/hour for longer events with practised tolerance and multiple carbohydrate sources at higher intakes. Racepack maps completion and performance goals to different starting references; these goal-specific numbers are planner policies, not independently validated requirements.

Fuel carbohydrate = g/hour × race hours. Fuel calories = carbohydrate grams × 4. Gel count rounds up using the selected gel label. Gels already owned reduce the quantity to buy. The selected drink mix is counted automatically; other drinks or foods are not counted. Energy used is shown separately when body mass is supplied, using an approximate running cost of 1 kcal/kg/km (Margaria et al., 1963).

Suggested sodium = the weather/intensity starting rate × race hours. Mild: easy 300, steady 360, hard 450 mg/hour. Hot/humid: easy 390, steady 480, hard 600 mg/hour. The displayed range is ±20% for planning uncertainty; these are Racepack policy estimates, not individual measured requirements or source-endorsed doses. Sessions up to 60 minutes and gym sessions do not automatically receive a sodium product recommendation. Extra sodium subtracts sodium in all selected gels, including those already owned. Drink-mix carbohydrate and sodium are counted once; gel quantities are recalculated together. Tablet/portion counts use the exact label and round up. Drink to thirst and your practised plan; sodium does not make overdrinking safe.

BMI = body mass kg ÷ height in metres squared. It is displayed as a general reference and does not alter the race plan. BMI formula (CDC)

AIS carbohydrate guidance · AIS sports-drink composition · AIS electrolyte guidance · NATA fluid-replacement position statement · Running energy-cost study

FREQUENTLY ASKED QUESTIONS.

Can I use fuel from aid stations?

Yes. Check the organiser’s brands, serving sizes and availability. The current simple form counts the selected gel only; if you use other drinks, foods or aid-station fuel, review their carbohydrate and sodium as part of your complete plan.

Can I change my brand or flavours?

Yes. Choose among verified, available variants that match your answers. Nutrition and pack size are linked to each exact variant; changing a flavour can change caffeine and other totals.

What if I have a sensitive stomach?

Select the gentle starting option, use products you have tested, and review the plan in training. This planner cannot guarantee a product will agree with your stomach.

Is this a personalised medical plan?

No. This is general sports nutrition guidance for adults. For clinical needs, pregnancy, medical conditions or persistent symptoms, consult an appropriately qualified professional.

General sports nutrition guidance for adults. Individual needs vary. Practise products and timing in training. Prices, stock, shipping and discounts are confirmed by Shopify. No sign-in is required and answers are not stored in your customer account.