correct sentence

I prefer the first. The second needs a comma after "something" and "pocket", or else you'll be eating your pocket on that long journey.

No, no, no, Contrex!! lol!!

I always keep something that I can eat in my pocket when I am on a long journey.

This is implying that you'll be eating something in your pocket! lol


I always keep something in my pocket that I can eat when I am on a long journey.

This is correct! You have something in your pocket that you can eat - perfect!

OOPS!!!