Note: There are 3 separate races so make sure you enter the correct one.
If you want your time to qualify for the BBAR then enter the Individuals race.
If you are a member of a club affiliated to the ECCA and are not worried about the BBAR then enter the Association race (really only necessary if you are a slower rider).
If you are a riding a Tandem then you and your partner should enter the Tandems race.