GO Ride - Competing on a bike

Have you read the GO Trialling page?
If you're on your own, and don't know any existing MCC competitors, get in touch with Ian Thompson, who deals with public relations for motorcycles and motorcycle competitors, and ask him to put you in touch with someone local, or someone who is a regular competitor with a similar bike.
Ian Thompson [E-mail: i1_wjt@yahoo.co.uk]

You need to decide what type of bike to use, and which class to enter. The ACTC produce an excellent guide to taking up long distance motorcycle trials, available from their website at this link.
Study the MCC Regulations for events. In particular, read Section D on Permitted Tyres. Suitable tyres for some sizes of motorcycle wheels are now becoming difficult to source and you may need to speak to other competitors for advice.
You will need to prepare your bike. The task of preparing a bike is made easier by the fact that a modern trials, trail, or production enduro, bike will have adjustable long travel suspension, good ground clearance, and will be built to withstand the hard work. Read the ACTC guide referred to above.

Join the MCC - see the Membership page.
You will need an ACU Competition Licence/Trials Registration which can be downloaded from this page of the ACU website. Complete the form. Then send the form, and your cheque (if applicable), to the MCC General Secretary who will counter-sign the form and forward it to the ACU. Please include an SAE, addressed to the ACU (the address is at the bottom of Page 6 of the form). If you are planning to enter the sidecar class, your passenger will need an ACU licence as well.
... and finally you will have to decide which trial to enter, and in which class. Check out MCC Class 0 and decide whether to start with this "easier" option or whether to plunge into the main trial in the appropriate class for your bike.