How many kilometers is it from Beijing Railway Station to the College of Continuing Education of the National People's Congress?

Bus route: Metro Line 2 → Metro Line 5 → Metro 15, with a total length of about 18.6 km.

1. Take Metro Line 2 from Beijing Station and arrive at Lama Temple Station after 5 stops.

2. Walk about 160m and transfer to Metro Line 5.

3. Take Metro Line 5, pass 5 stops and arrive at Datun Road East Station.

4. Walk about 370 meters, and then transfer to the subway 15 line.

5. Take the subway 15 line, pass three stops, and arrive at North Beach Station.

6. Walk about 490 meters to China Renmin University to continue teaching. ...