Strava calls this W79 RoundAbout Full Detour. I challenge their 23 ft elevation gain; no doubt you will as well. 

Currently, there is a bit of confusion on where you should be riding at the traffic circle northbound.

This route cuts into the escarpment of this westernmost ridge of Manhattan. It has 3 small crests. The profile does not do it justice. If you are feeling strong, you can muscle your way over each, shifting gears up and down to use the vertical to your advantage.

Aside from pedestrian crossings and collateral traffic, if you have something in your tank, this can be a pleasant section to ride. At the end of a long day in the saddle, it can be just another insult.

For the sake of all, respect other users.

As of 5/26/2020, the northbound direction along the roundabout is confusing. An arrow on the pavement would have riders going in both directions share the western lane, leaving the east side of the traffic pickets to motor traffic. However, once in that lane, these directions appear counterintutive. All I can say is to pay attention whatever choice you make.

HS 5/26/2020