Carrying flags and banners, the marchers chanted "No more P, it destroys out families" and "Reach out, ask for help". They also demanded dealers get out of Northland.
Hikoi leader Reti Boynton, of Kaitaia, said in parts of Northland it was easier to find P than it was to get cannabis, and addicts had to wait three to six months to get into rehab. By then it was often too late.
The drug made people aggressive and willing to sell anything to get it, he said.
"It turns women into prostitutes, men into thieves, and takes food out of cupboards. And what is the Government doing about it? Nothing."
Within 24 hours of the hikoi passing through Kaitaia the group had 28,000 hits on a Facebook post promoting an 0800 number offering help with meth addiction.
People were afraid to speak out because of the violence associated with the P trade, Mr Boynton said.
Groups represented on the hikoi included Grandparents Raising Grandchildren, with member Te Clark saying she wanted to let people know "how far the P scourge extends into whanau". Last year parental P use was the single biggest reason why grandparents had to take over care of their grandchildren.
Marcher, Billa Graham of Kaitaia, said towns along the way showed great support but the standout was Kawakawa.
"We had shopkeepers coming out of their shops, people beeping their horns, and a group did a haka for us, which was awesome," he said.
Far North police acting commander Riki Whiu said police "absolutely supported" any community-led initiative against methamphetamine.
"We can't afford to take our foot off this ngangara [demon]," he said.
■ Call the meth helpline on 0800 787 797.