THOUSANDS of people who rode to work for the first time on Ride2Work Day last year have become regular riders.

But many cyclists said poor bike infrastructure discouraged them from riding more often.

A Bicycle Network survey of 11,000 people has shown that almost 40 per cent of riders who rode for the first time on Ride2Work Day last October are still riding at least once a week. And of those who took up riding at any time in the past year, 63 per cent - about 4000 people - now ride at least once a week, and 21 per cent most days.

Stephanie Hamilton, 31, took up riding on Ride2Work Day in 2010 and still commutes by bike at least four times a week.

She says it wasn't just the free breakfast at Federation Square that lured her to start riding on the official day, but the day's ''support and encouragement'' and ''knowing there'd be a lot of other people riding to work that day''.