Malcolm,
The Biarritz is about 235-240 yards to the back tier from the tips. When I played there in the fall, I hit a solid three-wood that landed on the front tier, ran through the swale, rolled up to the very top of the slope short of the back plateau, paused, and then rolled back down. It was agonizing to watch from the tee, but it was great fun nonetheless.
The 3rd's genius is its location in the routing. Banks found great locations for all short holes at Hackensack, particularly the Biarritz (gently downhill), the Short (downhill with a drop-off and long view behind), and the Redan (along a right-to-left sloping hillside). He chose a perfect spot for an elevated at the Biarritz third, which allows the golfer a full view of the grand green.
It's very easy to fall out of date with renovations these days. Clubs like Hackensack are making changes gradually over a few years, so a few years can make a huge different. Two years ago, Hackensack had just re-established the front half of the brilliant Biarritz green without the bunkering. Now, the hole is the highlight of the layout.