Organisers of this year's OCBC Cycle Singapore have added another category for foldable bikes in the April 26-28 event.

Called The Ultimate Foldies Challenge, it is akin to a "criterium" for foldable bicycles.

Cyclists will ride along a special 2.5km route for 30 minutes, and go through heats before the grand final.

Some 910 slots are available for this new category, which offers cash prizes to the top three cyclists of each gender.

Said Chris Robb, managing director of organisers Spectrum Worldwide: "We're really excited about the introduction of The Ultimate Foldies Challenge at OCBC Cycle Singapore 2013.

"It's a truly unique format within our event and one we believe will prove hugely popular within Singapore's Foldies community."

Registration for The Foldies Community Ride (24km) and the other categories remain open. For more information, visit www.ocbc.cyclesingapore.com.sg.