16. 1 km. According to Baidu map, the whole journey from Sunshine Jiayuan to Wulinmen is 16. 1 km, and it takes 1 hour for 3 minutes. The bus route is as follows:

1. First, walk 520 meters from City Sunshine Jiayuan to City Sunshine Leyuan Station, and take the bus 14 1M to get off at Mingyayuan Station.

2. Secondly, walk130m to Jinjiadu Station, take Metro Line 2 (Chaoyang direction) and get off at Wulinmen Station (Exit G).

3. Finally, walk 380 meters to reach the destination.