As a runner of over 30 years, no way you would catch me running on the beach anywhere. The sand shifts, the beach is uneven, etc. To me, the beach is future knee or hip surgery waiting to happen. I prefer a solid surface that is relatively even, not slanted. Not nearly as "cool" but much better for your body & for having an efficient run vs. one where you'll be fighting sinking into the sand & have a lopsided stride in many areas. This is the kind of thing non-runners do not think about. My first trip in 1986 I ran the beach my first morning. Never again. The road is where you'll find me... on the shoulder, ALWAYS facing oncoming traffic but completely aware of vehicles approaching from behind as well, early - before traffic picks up. I'll take a good run over the cool factor any day of the week. When in Negril - which is most of every summer for many years - I do it 7 days a week, then hit the gym. This is just my opinion based on decades of running & working out, being a certified personal trainer. BTW... never a running or fitness related injury & I'm in my 60's. When I'm vegging on the beach & see someone running on the beach, all I can do is shake my head. I know some people swear by it but I make my run on the road decision based on logic & knowledge. On the road - at least in the early a.m. - one gets to see Negril workers getting ready for the day... night shift leaving, day shift arriving, cook shops setting up, etc. You won't see me on the road after 8 a.m. though. Usually, I'm finished by 7 a.m.