On the Cam however head races are a little more subdued but just as keenly contested. As the races are against the clock, support is always welcome, as with no opposition to eyeball motivation has to come from somewhere! Probably the best place to watch head races is on the long reach between the railway bridge and Ditton corner. The towpath is wider at this point and allows more scope for running along. Also if there is any overtaking of the boat that started ahead in the time trial then it is likely to occur at this point.
Notable exceptions to the usual head race course are as follows. The Fairbairns Races held at the end of Michaelmas term run from Jesus Boathouse to either just before Ditton Corner (novices) or the Motorway Bridge (seniors). In addition there are two "Head to Head" races run each year, one in Lent and one in Easter term. These are double races from the Green Dragon Footbridge to the Motorway Bridge and then back (with a short break in between).
On the Cam, regattas are usually run on the stretch between Ditton Corner and the Pike and Eel, with the exception being the University small boats races. While still a knockout, these races are run in a chase format. The crews start about 100m apart and race to separate finishing posts. Whoever reaches their post first is the winner. This is a slightly odd format, but permits regatta racing over a longer distance than would otherwise be possible.
Bumps is split by gender and then into divisions of 17 boats, all eights. When a division races, the boats line up in procession on the bank by the Motorway bridge, with 1.5 boatlengths between each crew. Each cox has a bung which they must hold, attached to a piece of chain set into the bank, to ensure that before the start no boat can gain an advantage by moving down the course. At the start a cannon is fired, the coxes drop the bung and the aim is to "bump" the boat in front. Bumping takes the form of physical contact between some part of the chasing boat and the boat ahead. After bumping, both crews pull into the side, and their race is over. The rest of the division races on however, the boat behind the two now pulled into the side will try and bump the boat three places ahead, an "overbump". This continues until all boats have either bumped out, or reached the finish post (which varies for the different divisions, depending on rower competance), known as "rowing over". For the following days racing (there are 4 in total) any boats that have bumped or been bumped swap places. The aim for most boats therefore (who are unable to finish totally top of the pile) is to bump on all 4 days, thus earning "blades" and the right to have a painted oar made with the names of crewmates and boats bumped. To allow for movement between divisions the top boat in each division will race as the bottom boat in the division above as well. This boat is then known as the "sandwich boat".
Due to the closeness of the racing, the need to sprint to avoid being caught and the aim of physical contact with the opposition, bumps is great for spectators. May bumps is the biggest event of the Cambridge rowing year, and draws thousands of spectators. There are even programmes printed with crew names and a blade chart to identify the boats that you are watching. So where should you watch from?
The start is generally left for the rowers, it can get a bit crowded and frantic with 150+ people involved in each division. After that people start to gather and watch from First Post Corner. Grassy Corner has grass to sit on, and a good view down two of the sections of the course where many of the bumps occur. It is a very popular spectating spot. The Plough pub has a nice beer garden that runs right up to the river, and has the bonus of serving beer, though the view is maybe not quite so good. The bank on the outside of Ditton corner is also popular, especially with alumni of the various clubs, who will often have tents or marquees for the occaision. While a lot of the action in the lower divisions will have already happened by this point on the course, it offers a good view down towards the railway bridge and the chance to see some of the action at the top of the men's and women's first divisions. If you have never been to watch bumps, then put on something purpel and come and cheer. It is one of those experiences that everyone should have at least once!