During the marathon following important points one should keep in mind.

• Pace yourself – Start slower than your target pace to conserve energy for later miles.
• Hydrate strategically – Don’t overdrink water alone as it could lead to hyponatremia. Alternate with electrolyte drinks.
• Listen to your body – Dizziness, chills, or cramping mean you should slow down or stop.
• Fuel up – Take energy gels, bars or snacks every 45–60 minutes to maintain blood glucose levels.

Image credit: Image by Colin Behrens from Pixabay (Free under Pixabay content license, February 19, 2016)