50 Marathons in 10 years

At 40, Indranil decided to take on a challenge.
To run 50 full marathons (42 .2 km/ 26.2 miles or more) in the next 10 years.
He would run his 50th Marathon in 2024.
Why is he doing this?
He wants to do this for:
  • - Himself
  • - For raising awareness about staying fit and healthy
  • - Inspiring others to challenge the limits
  • - For raising money for girl education