Western Australia can now boast having the world's longest off-road continuous cycle track, following the completion of the 1000-kilometre Munda Biddi Trail, east of Perth.



The trail was officially opened at the Festival of Cycling in Mundaring on Sunday where the first cyclists to complete the newly extended trail crossed the finish line of the Munda Biddi Epic 1000 that began three weeks ago in Albany, in the state's south.



The WA government estimated more than 20,000 international, interstate and local cyclists used the Munda Biddi every year, and that number was set to grow with the completion of the trail.

Environment Minister Albert Jacob opened the trail at the Festival of Cycling in Mundaring where the first cyclists to complete the newly extended trail arrived on Sunday.

"The final section of the trail on the south coast is now open and I am delighted to celebrate the completion of this significant project which has been 12 years in the making," Mr Jacob said.

The first riders to complete the trail in its entirety set out three weeks ago from Albany, as part in the Munda Biddi Epic 1000 event.

"Creating nature-based tourism opportunities is something the State Government is strongly committed to, and the Munda Biddi Trail is a great example of that.