On what basis do you want to skip fast?

• Distance of your journey trip?
  The distance is much to short to even shorten the prayer (most sunni madhhabs require a traveling distance of > 80 kilometers, shi'a may have a shorter traveling distance but if I remember well it is still close to 60kilometers), so this trip doesn't even count as traveling! And skipping fast due to travel is only a permission not a due, many scholars say it is better to fast if one is able to do so.
• Duration?
  there's nothing hindering you to take food with you to break your fast once the time for maghrib enters.

It seems to me that there's no valid reason as to why you shouldn't fast. There rather might be a reason as to why you might consider not attend this outing depending on the activities which are planned there.

• Is it permissible to break a fast if I am travelling?

On what basis do you want to skip fast?

• Distance of your journey trip?
  The distance is much to short to even shorten the prayer (most sunni madhhabs require a traveling distance of > 80 kilometers, shi'a may have a shorter traveling distance but if I remember well it is still close to 60kilometers), so this trip doesn't even count as traveling! And skipping fast due to travel is only a permission not a due, many scholars say it is better to fast if one is able to do so.
• Duration?
  there's nothing hindering you to take food with you to break your fast once the time for maghrib enters.

It seems to me that there's no valid reason as to why you shouldn't fast. There rather might be a reason as to why you might consider not attending this outing depending on the activities which are planned there.

• Is it permissible to break a fast if I am travelling?