I went cycling from Yingge District 鶯歌 to Yulao Lookout 宇老觀景台 (altitude 1500m) via the Northern Cross-Island Highway 北部橫貫公路 / 北橫, and then descended to Hsinchu High Speed Railway Station 新竹高鐵站. It was a 127km route with a maximum elevation of 1500m with beautiful views in the mountains.