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The term is also used to refer to the community of professional cyclists in general, as in 'the professional peloton.'
The peloton travels as an integrated unit (similar in some respects to
The shape or formation of the peloton changes according to many factors. When two or more groups of riders have reason to contest control of the peloton, several lines may form, each seeking to impose debilitating fatigue on the other teams. Fatigue is a decisive factor in the outcome of every race.
A strong headwind or a hard effort tends to spread out or string out the riders into a long narrow formation, sometimes single file. A slow pace or brisk tailwind greatly relieves the fatigue penalty for riding in a formation that fills the road from one side to the other, and in these situations riders ride side by side.
While the riders at the very front encounter the greatest air resistance (and also those on the windward side when there is a significant crosswind), those behind the first few riders near the front enjoy critical advantages.
Being close to the front means that the rider can see and react to attacks from competitors, and changes in position, with far less effort. Gaps sometimes form in the peloton, and being close to the front reduces the risk of getting caught in the rear group if a break occurs in the peloton, for example, after a crash. Riders near the front are much less likely to have delays due to involvement in crashes.
There is increasing risk of delays or injury from involvement in crashes as one falls farther back in the peloton. In addition, riders are increasingly affected by the
Being close to the front is also critical in strong crosswind conditions. Cross winds create a significant fatigue penalty for everyone, unless riders form moving groups called
When a large peloton is exposed to a significant crosswind on a narrow road, the peloton cannot avoid breaking into a number of small echelons. Teams aware of wind conditions ahead, strong enough to move to the front, well experienced in echelon riding, can gain an important time advantage in these circumstances.
It is critical for riders in contention to win a race to remain near (but not at) the front of the peloton, especially when approaching sharp turns that require braking. Resuming pace after a sharp turn (especially into wind) routinely causes division in a peloton. Once a division occurs, if the will and collective strength of those wisely placed at the front is greater than those behind, the gap between the groups will remain (or increase) to the end of the race, because the extra air resistance for a single rider attempting to move forward to reach the front group imposes an extravagant fatigue penalty, as compared to those who remained aerodynamically protected in the peloton. This is particularly true at high speed on flat roads.
When a team maneuvers to the front of the peloton, it has placed itself in position to dictate the tempo of the race. Teams of riders may prefer a faster or slower tempo depending on the team's tactics.
Being near or at the front of the peloton is critical when initiating a
A few strong riders will always attempt to break away from the main peloton, attempting to build such a commanding lead early in the race that the peloton cannot catch up before the finish. Breakaways may succeed when break riders are strong, especially if none of the riders in the break is a danger man (in contention for a win in the overall contest), and if they all pull together as a team. The peloton will not allow a break with a danger man to get far ahead. Strong teams who want to bring their sprinter into contention for the win come to the front of the peloton and dictate a harsh pace, imposing fatigue on rivals, meanwhile breakaway riders (who individually must spend much more time exposed to the wind than peloton members) sequentially succumb to fatigue and are normally caught. Otherwise successful breaks often fall into disarray just before the finish, where rider calculations regarding personal chances for victory destroy the uneasy break alliance, meanwhile the peloton is catching up quickly.
Tactical factors also apply. Team tactics generally involve clustering their members within the peloton in order to maximize their ability to affect the peloton. For example, if a team member is currently in a breakaway group out in front of the main peloton, the remaining team members will normally make no attempt to accelerate the peloton, to maximize the chances of success for their breakaway group rider. Rarely, they may move to the front of the peloton, and actively seek to check the progress of the peloton at a critical moment. This tactic has the best chance of success on narrow roads, with tight turns, where a single team can fill the road from one side to the other.
Mountainous courses routinely create significant gaps in the peloton, as the aerodynamic factors are much less important at slower climbing speeds, and effort expended is the key determinant of progress. Under these circumstances strong riders routinely attempt to charge away from the main peloton. There are routinely 2 or 3 subgroups ahead of the main peloton, and 2 or 3 subgroups behind, as riders come to grips with individual limits to endurance at maximum energy output on a particular day.
A group of riders behind the main peloton is often called a '
When a break group's members have all been caught by the peloton, announcers say 'groupo compacto.'
Team members make every effort to shield their principal rider from fatigue due to wind, until the last possible moment, so to give their principal rider the best opportunity to win the race. In single stage races, the principal rider is normally the best sprinter. In races involving multiple stages, the principal rider is called the GC (
In races where the finish is on flat roads, within a few kilometers from the finish, strong teams form into lines, with their principal sprint contender at the rear. The leading rider of each contending team drives forward at the highest pace he can achieve, until he reaches the limit of his endurance, when he then pulls off to the side, allowing the succeeding team member in line to drive forward to his limit. You can picture the entire road filled with lines of riders in colorful team jerseys, each striving to put their sprinter in the best possible position to win.
In mountainous races, the winner routinely arrives at the finish alone, because only the winner was willing and able to endure that degree of effort and suffering.