Banana and Date Smoothie for Ironman Training

Why This Recipe Works for Athletes

During Ironman training, calorie and carbohydrate demands soar — especially on days with multiple long sessions. This smoothie delivers approximately 600 calories and 100g of fast-acting carbohydrate from bananas and Medjool dates, making it ideal as a pre-session fuel drink or an immediate post-session recovery option when eating solid food feels unappealing. The dates add natural sugar alongside fibre, potassium, and magnesium — minerals lost through long training sessions.

Ingredients

  • 2 ripe bananas (frozen bananas give a thicker consistency)
  • 4 Medjool dates, pitted
  • 250ml whole milk or oat milk
  • 1 tablespoon almond butter or peanut butter
  • 1 teaspoon vanilla extract
  • Pinch of sea salt (replaces electrolytes)
  • 100ml cold water (adjust to preferred thickness)

Instructions

  1. If using frozen bananas, remove from freezer 5 minutes before blending to soften slightly.
  2. Add all ingredients to a high-speed blender: bananas, pitted dates, milk, nut butter, vanilla extract, salt, and water.
  3. Blend on high for 45 to 60 seconds until completely smooth. Dates can be fibrous — blend longer if any lumps remain.
  4. Taste and adjust: add more water for a thinner consistency, or another date for extra sweetness.
  5. Pour into a large glass or shaker bottle and consume within 20 minutes of blending for best texture.

Nutrition Notes

Per serving (as above): approximately 580 to 620 calories, 95 to 105g carbohydrate, 12g protein, 14g fat. This is intentionally high-calorie — it is designed for athletes with a high daily energy expenditure. For lighter training days, halve the recipe. Dairy-free: swap whole milk for oat milk with no performance impact. Add a scoop of unflavoured whey or plant protein (20g) to boost protein for a post-session recovery version.

Prep time: 5 minutes | Servings: 1