Skip to content
Fuel Bar
Fuel Bar
MARCHON Fuel Bar
Marchon fuel bar review
Back label of the fuel bar 30 containing the nutritional information of the natural oat energy bar

Fuel Bar

A real-food bar with 30g of carbohydrate from oats, maple syrup and dates. Built for before, during or after training.

  • New recipe with improved flavour and softer texture
  • 30g of carbohydrate per bar
  • Easy to digest before training
  • Vegan, gluten-free and dairy-free
Subscribe & Save:
  • Cologne List Approved
  • 3rd Party Lab Tested
  • Nutritionist Formulated
When to Use
  • Pre-workout- Consume one bar 45- 60 minutes pre training.
  • Intra-workout- Consume up to 2 bars per hour of exercise, depending on your duration and intensity. Best used alongside other products such as the Endurance Fuel Gel.
  • Post-workout/snack- Can be used to replenish glycogen stores and support recovery from exercise.
Benefits

We’re fuelling performance with real food.

The MARCHON™ Fuel bar is a compact, functional energy oat bar crafted for everyday use. Designed to deliver 30g of carbohydrate energy from natural sources like gluten-free oats, rice, and dates, this bar supports performance without unnecessary fillers or artificial ingredients.

It is versatile, smaller in size than most fuel bars and has a texture that doesn't get sticky in the heat or go solid in the cold.

Our energy oat bar can be used pre, intra, post training or as a snack anytime of the day. It is low in fibre, protein and fat and with a 2:1 ratio of glucose to fructose it slots into the MARCHON Endurance Fuelling System seamlessly.

This is not just for endurance activities, though. It can help fuel any training session, from HYROX and functional fitness to cycling or running.

Usage instructions

Pre-workout - Consume one fuel bar 45- 60 minutes pre training.

Intra-workout - Consume up to 2 bars per hour of exercise, depending on your duration and intensity. Best used alongside other products such as the Endurance Fuel Gel.

Post-workout/snack - Can be used to replenish glycogen stores and support recovery from exercise.

Nutrition Breakdown

Chocolate chip
Per bar (50g):

- 193 kcal
- 4.3g protein
- 30g carbohydrates
- 12g sugars
- 6g fat
- 3.4g saturates
- 2.6g fibre
- 0.06g salt

Raspberry white chocolate
Per bar (50g):

- 190 kcal
- 4g protein
- 30g carbohydrates
- 11g sugars
- 6g fat
- 3.4g saturates
- 2.3g fibre
- 0.06g salt

Shipping, Subscriptions & Returns
Shipping


UNITED KINGDOM

We aim to dispatch your orders the same working day if the order is placed before 1pm. Any orders after this will be dispatched the following working day.

Our shipping options are : 

  • Standard 2-4 working days £3.95
  • Express 1 - 2 working days £5.95.

All orders over £50 qualify for FREE standard shipping, note a paid upgrade to express is still possible.

INTERNATIONAL
Similarly to domestic shipping We aim to dispatch your orders the same working day if the order is placed before 1pm GMT. Any orders after this will be dispatched the following working day.

Shipping rates vary depending on country and region but free shipping is available depending on order size for the USA, Australia, Europe and the UAE and international shipping starts at £7.

Subscriptions

You can edit your subscription here: LINK
Please note it is possible to delay your subscription delivery date as well as change an item as opposed to cancelling.

Returns

You have 14 days from the date of receiving your item to initiate a return with us.
Exchanges are eligible for another size or product permitting the item you ordered has not been used or in the case of supplements has not been opened.  

You can find the return portal here: LINK
*refunds are charged a £5 handling fee - this will be deducted from your refund. 
**Bottles are non returnable.

Third Party Lab Tests
View results
Choose options
Choose options
View full details
REAL-FOOD TRAINING FUEL

Don't start your session on empty.

Your session still needs fuel, even when the day leaves little time to eat. Fuel Bar puts 30g of carbohydrate in your bag, ready for the gap between meals and training. Oats, maple syrup, coconut oil and dates in a soft, chocolatey bar. A known amount of carbs, without planning another meal around your session.

REAL-FOOD TRAINING FUEL

Don't start your session on empty.

Your session still needs fuel, even when the day leaves little time to eat. Fuel Bar puts 30g of carbohydrate in your bag, ready for the gap between meals and training. Oats, maple syrup, coconut oil and dates in a soft, chocolatey bar. A known amount of carbs, without planning another meal around your session.

Real food, ready for training

A
bar
you
look
forward
to
Carbs
for
your
next
session
Fuel
before
the
first
rep
Take
real
food
into
longer
sessions
A bar you look forward to
Carbs for your next session
Fuel before the first rep
Take real food into longer sessions

Premium quality standards

The MARCHON Standard is an internal framework supported by independent third-party testing and registered bodies, ensuring the efficacy, quality, and integrity of every product we create.

Premium quality standards

The MARCHON Standard is an internal framework supported by independent third-party testing and registered bodies, ensuring the efficacy, quality, and integrity of every product we create.

FAQs

What is MARCHON Fuel Bar?

Fuel Bar is a real-food carbohydrate bar with 30g of carbs per 50g bar, made from gluten-free oats, maple syrup, dates and dark chocolate. It's low in fibre and protein, so it's built for fuelling training rather than filling you up. Eat it before, during or after a session.

Why does Fuel Bar have 30g of carbs?

30g is a useful, easy-to-count amount: a typical pre-training snack and half of the 60g an hour often recommended for longer sessions. A Fuel Bar, an Endurance Fuel Gel and a scoop of Carb + Electrolytes each give about 30g, so you can count your fuel in 30s: two for 60g an hour, three for 90g.

How is Fuel Bar different from a protein bar?

Fuel Bar is built for fuel, not fullness. Protein bars are high in protein and fibre, and many use sugar alcohols, which digest slowly and can cause bloating before training. Fuel Bar gives you 30g of carbs with only 2.5g fibre and 4.1g protein. Have your protein after training, and your carbs before.

Is Fuel Bar vegan and gluten-free?

Yes. Fuel Bar is vegan, dairy-free and gluten-free, made with gluten-free oats and gluten-free cereal balls.

What's changed in the new Fuel Bar recipe?

The updated Fuel Bar is softer, less dry and more chocolatey, so it's easier to eat on the go. It still has 30g of carbs per bar from the same oat, maple syrup and date base. It has slightly more fat (8g) and energy (207kcal) than before, and it's still vegan and gluten-free.

When should I eat Fuel Bar before training?

Eat one Fuel Bar 30 to 60 minutes before training. Some people are comfortable eating it closer to the session; try different timings in training to see what suits you. It's especially useful when lunch was hours ago and you're training after work.

Can I eat Fuel Bar during exercise?

Yes, especially on long runs, rides and hikes where the pace lets you chew. Many athletes eat a bar early in a long session and switch to gels later, when the effort is harder. During exercise, have up to two bars an hour alongside gels or a carb drink, and practise this in training first.

Should I use Fuel Bar or an energy gel?

Use both, for different moments. Fuel Bar is real food for before a session or the steadier early part of a long one. Endurance Fuel Gel is easier when the effort is hard and chewing isn't practical. Bar before, gel during.

Is Fuel Bar tested for banned substances in sport?

Fuel Bar isn't currently on the Cologne List®. If you compete in a drug-tested sport, check with your governing body before using any sports food or supplement.