Read the following context and choose the best option to answer the question.
Context: I also realized I was training for my marathon and an Ironman I ' m not signed up for ( Arizona in November ) . All my friends are doing it , and I was vicariously training for them . ( Yes , if they told me they were going to jump off a cliff for a workout , I 'd probably follow ) .
Question: Why is the narrator running so much ?
Options: 
- None of the above choices .
 - They plan to run a big race .
 - They plan to help a friend train for a marathon .
 - They plan to lose weight .


They plan to run a big race .