GPS track point error message

I was trying to set my track point to 387 this morning for a run but my GPS prompted that,
"The track Drive to Assabet River boat launch contains 387 trackpoints. Your Gamin eTrex can only hold 250 points per saved track. Remove some points or split the track into smaller sections. " Game eTrex can only hold 250 points per saved track. Remove some points or split the track into smaller sections.
Since 387 is greater than 250 how will I be able to change the track points? I do not want to split the track to smaller sections. Is there any other way?
Any suggestion?

