You live in the country but there's no good place to run?
They do have ROADS in the country don't they?
Some other exercises you can do on a farm:
Stretching
Pushups, inclined pushups
Crunches, reverse crunches, leg raises
Pull ups, Reverse grip pull ups
Jumping Jacks
Calf raises
Squat thrusts (begin standing with feet at shoulder width, bend down using mostly your legs, place your hands on the ground in front of you and kick you legs out behind you so that you are in a push-up position - legs and back straight using your arms to hold up your body - do 1 pushup almost touching your chest to the ground, bring your legs back in and stand up, do a jumping jack. That's ONE squat-thrust. Try doing 20 or 30 in a row at a fast pace, it'll kill ya)
Run in place bringing the knees up to waist level, keeping the pace fast.
You want a routine? Here's something we used to do in martial arts for a warmup:
run in place, 30 seconds
do 60 jumping jacks
run in place, 30 seconds
drop to situp position, do 25 situps
stand back up and run in place for another 30 seconds
drop to pushup position, do 25 pushups
stand back up, run in place, 30 seconds
20 squat thrusts
run in place for another 30 seconds
There should be NO time in between each exercise, go right from one to the other. Follow up with several sets of pull ups, more push-ups, more crunches, whatever you want to work. Do this routine twice a day, once in the morning and once in the evening.
Intensity is what you should strive for, when you run in place for example you can wuss out and do a half-assed "jog" in place or you can really dig in and push yourself to actually "run" in place. If you do this routine at full intensity then I guarantee that you will be sweaty and ready to drop. If this isn't enough then try increasing the number of repetitions for each exercise.
If you have a punching bag available then just turn on some heavy metal (or any music that gets your blood going) and just hit that bag as hard as you can for 15 minutes. Great cardio workout.
Also, if there are any good places to hike then you might try that. Running up the side of a mountain will kill ya.
Remember, half of cutting is in the diet.