Such walking takes longer if there's no hitch (6)

I believe the answer is:

hiking

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'such walking' is the definition.
'hiking' can be an answer for 'walking' (I've seen this before). I'm unsure of the 'such' bit.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for hiking that I've seen before include "on a walk" , "Rambling" , "Tramping" , "Raising" , "On a trek" .)

I've seen this clue in The Globe and Mail.

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