Vik and Nigard in same day?

This past September, we visited the Nigard from Hafslo, closer than Balestrand. It took pretty much the whole day, including driving there (and back) and visiting the museum approaching the glacier, plus time at the glacier area. I don’t expect that you’d be able to fit in the glacier in just an afternoon, especially if you spent time seeing or doing anything there.

The drive there, once we passed to the west of Gaupne, followed a rushing river through a narrow valley. The road rose and fell a few times, but there were no cliffs along the road - just very high mountainsides rising above the valley, and about a million waterfalls. It was a slower drive than you might expect. If you had a hired driver, they could potentially go faster and nobody would miss any of the scenery, but again, I doubt the drive to the glacier and back to Balestrand can be done in just an afternoon.