Based on the context and the answer, generate a 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 ) .

Answer:

They plan to run a big race .



Why is the narrator running so much ?