Hello from Steved

I have 3 columns the 3rd columns is Kilometres
I would like to a Query to get Kilometres
How would I go about this please.

City Depot To Exmouth 5.9
To Exmouth Mairangi Bay 11.0
ASB Ponsonby Britomart Centre 1.5
Auckland Browns Bay 20.0
Auckland Newmarket 2.0
Auckland Three Kings 5.4
Avondale Symonds St 14.4
Avondale Symonds Street 11.2
Thankyou.