Not far to the border I agree, but I think you need an Omani Visa to enter there.
I once got into minor Sh1t, after i got a little lost off road near Al Ain and ended up approaching the Omani border post from the wrong side, they would not let me out!!
I had no option to turn around and head back the way I had come, get "lost" again, eventually finding my way back into the UAE.
Tony