How to Support Your Energy While Marathon Training
Marathon training is an exciting challenge that pushes both body and mind. With early mornings, longer distances and progressive training plans, it’s natural to feel your body working harder than usual. Supporting your energy levels through consistent habits, balanced nutrition and recovery is an important part of getting the most out of your training.
Understanding energy during training
As training volume increases, your body adapts to new physical demands. It’s common to notice changes in how your energy feels from week to week, particularly after longer or more intense sessions.
Building a strong foundation through nutrition, hydration, rest and recovery helps support overall wellbeing and allows you to train consistently over time.
The role of iron in supporting active lifestyles
Iron is a nutrient that plays an important role in supporting the body during periods of physical activity. It contributes to normal oxygen transport in the body* and supports normal energy-yielding metabolism*, both of which are important when training for events like a marathon.
During periods of regular exercise, your iron requirements can fluctuate as your body adapts to training. Including a variety of iron-rich foods as part of a balanced diet can help support your nutritional intake.
Good dietary sources of iron include:
-
Lean red meat
-
Legumes such as lentils and chickpeas
-
Leafy green vegetables
Pairing plant-based sources of iron with foods rich in vitamin C, such as citrus fruits or peppers, can help support absorption as part of a balanced diet.
Supporting energy through daily habits
While nutrition plays a central role, there are several everyday habits that can help support your energy levels throughout marathon training:
-
Balanced meals: Including carbohydrates, protein and healthy fats to support training demands
-
Recovery nutrition: Refuelling after sessions to support ongoing performance
-
Sleep and rest: Prioritising recovery as part of your training routine
-
Hydration: Drinking fluids regularly throughout the day
Taking a well-rounded approach helps maintain consistency and supports overall wellbeing during training.
The role of supplementation
Food supplements can be a convenient way to complement a balanced diet and active lifestyle, particularly during busy training periods.
BlueIron offers a liquid iron supplement that is easy to take and designed for everyday use, with both a regular strength and a higher strength option available. Its format makes it a practical addition to a routine for those looking to support their nutritional intake alongside a varied diet.
Training with balance
Marathon training is about more than just mileage. By focusing on supportive habits, balanced nutrition and consistent routines, you can create a strong foundation that helps you feel prepared and energised throughout your training journey.
Written by Cara Shaw, Nutritionist for BlueIron
Authorised Health Claims
*Iron contributes to the reduction of tiredness and fatigue
*Iron contributes to the normal function of the immune system
*Iron has a role in the process of cell division
*Iron contributes to normal oxygen transport in the body
*Iron contributes to normal formation of red blood cells and haemoglobin
*Iron contributes to normal energy-yielding metabolism
*Iron contributes to normal cognitive function-
-
Posted by Emily Garfield
21st April 2026
