Police have seized about $1 million of drugs after closing a 12-month operation targeting alleged trafficking networks in Mackay and the Whitsundays.

They arrested 57 people, who are facing more than 270 charges including trafficking, supplying and producing drugs.

More than $1million in drugs and cash were seized in the operation. Credit:29drugs

Taskforce Maxima Detective Inspector Terry Lawrence said police seized the drugs ice, methamphetamines, cocaine and cannabis.

Property was also seized, with police taking hold of sports cars, jetskis, drugs, cash, jewellery, rifles and a taser.