Kei runga tāu pene whero i tāu tēpu tari.
Your red pen is on your desk.
- this is an example of a locative sentence
runga is also used to indicate means of transport, for example:
Ka haere au ki te mahi mā runga pahikara.
I will go to work by bicycle.
or
I tae mai ia mā runga hoiho.
He arrived on horse back.
but
I tae mai ia mā raro.
He arrived on foot.