Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Dunhuang railway
Table title:
Station list
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Station </th><th colspan=1 rowspan=1 > Chinese </th><th colspan=1 rowspan=1 > Distance (km) </th><th colspan=2 rowspan=1 > Location </th><th colspan=1 rowspan=1 > Coordinates </th></tr>
<tr> <td colspan=6 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Liugou </td><td colspan=1 rowspan=1 > 柳沟站 </td><td colspan=1 rowspan=1 > 0 </td><td class="highlighted"  colspan=1 rowspan=1 > Guazhou County </td><td colspan=1 rowspan=1 > Gansu </td><td colspan=1 rowspan=1 > 40°40′44″N 96°26′16″E / 40.678989°N 96.437837°E </td></tr>
<tr> <td colspan=1 rowspan=1 > Xiaowan </td><td colspan=1 rowspan=1 > 小宛站 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Guazhou County </td><td colspan=1 rowspan=1 > Gansu </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > Guazhou </td><td colspan=1 rowspan=1 > 瓜州站 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Guazhou County </td><td colspan=1 rowspan=1 > Gansu </td><td colspan=1 rowspan=1 > 40°34′04″N 95°46′25″E / 40.567809°N 95.773537°E </td></tr>
<tr> <td colspan=1 rowspan=1 > Tianshuijing </td><td colspan=1 rowspan=1 > 甜水井站 </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Dunhuang </td><td colspan=1 rowspan=1 > Gansu </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Dunhuang </td><td colspan=1 rowspan=1 > 敦煌站 </td><td class="highlighted"  colspan=1 rowspan=1 > 169 </td><td colspan=1 rowspan=1 > Dunhuang </td><td colspan=1 rowspan=1 > Gansu </td><td colspan=1 rowspan=1 > 40°10′07″N 94°47′00″E / 40.168736°N 94.783336°E </td></tr>
</table>
Question:
Where does the Dunhuang railway run from and to and how long is it?
Answer:
Dunhuang railway runs, 169 kilometres from the Liugou railway station in Guazhou County to the terminus at the Dunhuang railway station.