We've teamed up with Trek to bring you the chance to win a truly unique prize. One UK road.cc reader will win a Project One road bike worth up to £3,200.

To celebrate the fact that Project One is now available on 4 Series Madone and Domane road bikes, It's your job to design your dream bike using one of those two framesets. You can pick any paint job, groupset, wheels and finishing kit up to a maximum budget of £3,200. We'll select a shortlist of 25 designs and have a public vote: the winner will get their design made to order.

This competition is open to UK residents only.

Head over to the Trek website and start building your dream 4 Series bike. Choose from a Madone or a Domane. Just click on one of the buttons below to get started: scroll down to the bottom and click on the Customise option, bottom left. Remember: the bike has to be a 4 Series and the maximum budget is £3,200. No exceptions!

Take a minute to register on the Project One site: it'll mean you can save multiple designs to work on, and it'll be easier for Trek to get the build details should you win!

When you're happy with your design, you need to save the bike image to your computer (right click on the image and select Save Image As... or similar). Then upload your image, along with your details and the cost of the build, in the form below. You can enter as many times as you like, so get your creative juices flowing!

Entries are now closed. We'll announce the shortlist shortly.

Terms and Conditions: The competition is promoted by Farrelly Atkinson Ltd and sponsored by Trek Bikes. The competition is open to UK residents only. The competition will be open for entries until midnight, Friday 10 January, 2014. No responsibility will be taken for lost or late entries. Employees of Farrelly Atkinson, Trek Bikes and their families and agents are excluded from entering. A shortlist of 25 entries will be selected from all the valid entries and there will be a public vote to decide the winner. The winner will be notified using the contact details supplied on entry. If the winner cannot be contacted, is ineligible or fails to claim a prize within 28 days, or breaches any of the competition rules the prize may awarded to another entrant. You agree to Trek Bikes and Farrelly Atkinson using your name and likeness in material concerning the competition, and grant Farrelly Atkinson and Trek Bikes the right to use your personal information to send you information about their products and services which may be of interest to you; neither party will share your information with anyone else. The prize is a Custom Trek 4 Series road bike with a maximum retail value of £3,200; no cash alternative will be offered. Farrelly Atkinson shall not be liable for any issues regarding the condition of the prize and any such issues should be raised with Trek Bikes directly. If you are a winner of the competition you acknowledge and agree that neither Farrelly Atkinson nor Trek Bikes, nor any of their officers, employees, agents or subcontractors shall have any liability to you whatsoever in connection with your use and/or possession of your prize. By taking part in this competition you agree to be bound by the competition rules and by the decisions of Farrelly Atkinson which are final in all matters relating to the competition. You agree to indemnify Farrelly Atkinson and Trek Bikes against all liabilities, costs, expenses, damages and losses suffered or incurred arising out of or in connection with any breach of these competition rules. No correspondence will be entered into. These competition rules are governed by English law. Any disputes arising shall be subject to the exclusive jurisdiction of the courts of England, save that Farrelly Atkinson and/or Trek Bikes shall be entitled to take action against a third party in any other jurisdiction.