Using MapQuest to provide driving directions usually works best if a street number is specified. You may find that it is not an easy task to get driving directions to a particular field if the actual address is not known. I'll try to provide as much info about the field, including an address (or approximate address), whenever possible.
Click here to go directly to the MapQuest Website. Go to the Driving Directions section of the site. Enter the starting address and the destination address, click on calculate directions and (hopefully) "voila" your directions will appear.