Ngapali Beach is probably a place least explore in Myanmar. I was there 2 months ago. No. Only for a visit to Yangon. Got to see the Shwedagon Pagoda. It was a short-stay.
If i were to travel to Ngapali Beach from Yangon, it would take 5 hours on highway route at a speed od 110 km/hr. Meaning to say the approximate distant equals to about 500 km.
Or, perhaps, 10 hours road trip for the benefit of doubt.