Linkedin, go to local startup meetups or look on meetup for marketing groups that do meetups (there are TONS!).
If you have the connections ask your friends/colleagues/acquaintances for a referral to a marketer they know.
I'm a marketer and I focus on these channels heavily.
If you are able to manage well and are up for the challenge of negotiating, try one of the online co-founder matching sites. They match people from all over but the main issue is always finding someone that shares your passion and will work hard to make the startup live.
If you have the connections ask your friends/colleagues/acquaintances for a referral to a marketer they know.
I'm a marketer and I focus on these channels heavily.
If you are able to manage well and are up for the challenge of negotiating, try one of the online co-founder matching sites. They match people from all over but the main issue is always finding someone that shares your passion and will work hard to make the startup live.