It is at the Al-Qudra Bike Trail, outskirts of Dubai. Quite a long one, for the perimeter is 85 km, but 200 km if loops are included.
Riding along the desert, one has a chance to meet bulls wandering across the picturesque dunes.
It is just a 35-minute ride from the center of Dubai, so one may as well make it a daily routine.
So, if you happen to be in Dubai – grab your bike or rent one (the rent is reasonably priced – 23 euros per 2 hours) and just ride!