So the length from Baoding to Luoyang is
146+8 13=959 km.
2) Route from Baoding to Zhengzhou: Baoding to Beijing and then from Beijing to Zhengzhou.
The length is 146+689=835 (km).
Route from Shijiazhuang to Luoyang: Shijiazhuang to Beijing, and then from Beijing to Luoyang.
The length is 277+8 13= 1090 (km).
Therefore, the railway from Shijiazhuang to Luoyang is relatively long, with the length of 1090-835=255 (km).