About 8.4 kilometers. According to Baidu map, the straight-line distance from Nanjing Road Pedestrian Street to Fudan University is about 8.4 kilometers, which can be reached by subway 10 and subway 18, and the whole journey takes about 29 minutes. The specific route is as follows:

1. From Nanjing Road Pedestrian Street, walk about 230 meters, get on at Nanjing East Road Station, take the subway 10 line (in the direction of Keelung Road), and get off at Guoquan Road Station.

2. Transfer at the station, walk about 80 meters, get on at Guoquan Road Station, take the subway 18 line (in the direction of Changjiang South Road), and get off at Fudan University Station (Exit 2).

3. Walk about 240m to Fudan University.