Dear Runner,

welcome to the community.

Though,you are free to use i pod,but i suggest you to refrain from it.As on the sunday morning, most of people just wake up late,you would have then opportunity to see,feel a different Delhi with no noise ,no vehicles,no pollution,(only fresh air,birds chirping,lots of encouraging sounds of people both runners and spectators,)So,you would miss all these stuff if you use your i pod,you may like to use i pod when you are practicing alone in ur city,place,but at half marathon,there would be hundreds of people,both young,n old,so you donot need i pod,

Regards,

Amit