Stage (bicycle race)
Encyclopedia
In sport
Sport
A Sport is all forms of physical activity which, through casual or organised participation, aim to use, maintain or improve physical fitness and provide entertainment to participants. Sport may be competitive, where a winner or winners can be identified by objective means, and may require a degree...

s, a stage, or leg, or heat, is a unit of a race
Racing
A sport race is a competition of speed, against an objective criterion, usually a clock or to a specific point. The competitors in a race try to complete a given task in the shortest amount of time...

 which has been divided in several parts for the reason such as length of the distance to be covered, as in a multi-day event. Usually, such a race consists of "ordinary" stages, but sometimes stages are held as an individual time trial
Individual time trial
An individual time trial is a road bicycle race in which cyclists race alone against the clock . There are also track-based time trials where riders compete in velodromes, and team time trials...

 or a team time trial
Team time trial
A team time trial is a road-based bicycle race in which teams of cyclists race against the clock .Teams start at equal intervals, usually two, three or four minutes apart...

. Long races such as the Tour de France
Tour de France
The Tour de France is an annual bicycle race held in France and nearby countries. First staged in 1903, the race covers more than and lasts three weeks. As the best known and most prestigious of cycling's three "Grand Tours", the Tour de France attracts riders and teams from around the world. The...

 or the Giro d'Italia
Giro d'Italia
The Giro d'Italia , also simply known as The Giro, is a long distance road bicycle racing stage race for professional cyclists held over three weeks in May/early June in and around Italy. The Giro is one of the three Grand Tours , and is part of the UCI World Ranking calendar...

 are known for their stages of one day each, whereas the boat sailing VELUX 5 Oceans Race
VELUX 5 Oceans Race
The VELUX 5 OCEANS Race is a round-the-world single-handed yacht race, sailed in stages, managed by Clipper Ventures Plc since 2000. Its current name comes from its main sponsor, VELUX, a Danish company. Originally known as the BOC Challenge, for the title sponsor BOC Gases, the first edition was...

 is broken down in usually four stages of several weeks duration each, where the competitors are racing continuously day and night. In bicycling, a race with stages is known as a stage race.

Bicycle race stage

In an ordinary stage of road bicycle racing
Road bicycle racing
Road bicycle racing is a bicycle racing sport held on roads, using racing bicycles. The term "road racing" is usually applied to events where competing riders start simultaneously with the winner being the first to the line at the end of the course .Historically, the most...

, all riders start simultaneously and share the road. Riders are permitted to touch and to shelter behind each other. Riding in each others' slipstream
Slipstream
A slipstream is a region behind a moving object in which a wake of fluid is moving at velocities comparable to the moving object . The term slipstream also applies to the similar region adjacent to an object with a fluid moving around it...

s is crucial to race tactics: a lone rider has little chance of outracing a small group of riders who can take turns in the strenuous position at the front of the group. The majority of riders form a single large group, the "pack" (in French
French language
French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...

, the "peloton"), with attacking groups ahead of it and the occasional struggling rider dropping behind. In mountainous stages the peloton is likely to become fragmented, but in flat stages a split is rare.

Where a group of riders reach the finish line together, they do not race each other for a few seconds of improvement to their finishing time. There is a rule that if one rider finishes less than one second behind another then he is credited with the same finishing time as the first. This operates transitively, so when the peloton finishes together every rider in it gets the time of the rider at the front of the peloton, even though the peloton takes tens of seconds, and possibly even a couple of minutes, to cross the finish line.

Riders who crash within the last kilometre of the stage are credited with the finishing time of the group that they were with when they crashed, if that is better than the time in which they actually finish. This avoids sprinters being penalised for accidents that do not accurately reflect their performance on the stage as a whole given that crashes in the final kilometre can be huge pileups that are hard to avoid for a rider farther back in the peloton. A crashed sprinter inside the final kilometre will not win the sprint, but avoids being penalised in the overall classification.

Stages in flat terrain

Ordinary stages can be further classified as "sprinters' stages" or "climbers' stages". The former tend to be raced on relatively flat terrain, which makes it difficult for small groups or individual cyclists to break away from the peloton—there are no big hills to slow it down. So more often than not, the entire peloton approaches the finish line en masse. Some teams are organized around a single specialized sprinter, and in the final kilometers of a sprint stage, these teams jockey for position at the front of the peloton. In the final few hundred meters, a succession of riders "lead out" their sprinter, riding very hard while he stays in their slipstream. Just before the line—200 meters away is about the maximum—the sprinter launches himself around his final lead-out man in an all-out effort for the line. Top speeds can be in excess of 72 km/h (about 45 mph). Sprint stages rarely result in big time differences between riders (see above), but contenders for the General Classification tend to stay near the front of the peloton to avoid crashes.

Mountain stages

Mountain stages, on the other hand, often do cause big "splits" in the finishing times, especially when the stage actually ends at the top of a mountain. (If the stage ends at the bottom of a mountain that has just been climbed, riders have the chance to descend aggressively and catch up to anyone who may have beaten them to the summit.) For this reason, the mountain stages are considered the deciding factor in most Tours, and are often attended by hundreds of thousands of spectators.

Mountains cause big splits in finishing times due to the simple laws of physics. Firstly, the slower speeds mean that the aerodynamic advantage gained by slipstreaming is much smaller. Furthermore, lighter riders generate more power per kilogram than heavier riders; thus, the sprinters and the rouleurs (all-around good cyclists), who tend to be a bit bigger, suffer on the climbs and lose lots of time—40 minutes over a long stage is not unheard-of. Generally, these riders form a group known as the "bus" or "autobus" and ride at a steady pace to the finish. Their only goal is to cross the line within a certain limit—usually the stage winner's time plus 15% -- or else they'll be disqualified from the race (at the discretion of the officials; on rare occasions a lead breakaway becomes so large that the entire peloton falls that far back and would normally be allowed to remain in the competition to avoid having only a small field still in competition).

Meanwhile, the lighter climbers hurl themselves up the slopes at a much higher speed. Usually, the General Classification riders try to stay near the front group, and they also try to keep a few teammates with them. These teammates are there to drive the pace—and hopefully "drop" the opposition riders—and to provide moral support to their leader. Typically, the leader will attack very hard when there are only a few kilometers to go, trying to put time into his main rivals. Gaps of two and even three minutes can be created over just a few kilometers by hard attacks.

Medium mountain stages

In larger stage races, some stages may be designated as "medium mountain" stages, or "intermediate" stages. These stages are more difficult than flat stages, but not as difficult as the mountain stages. They are often well-suited for a breakaway (as described below). Occasionally, the distinction between medium mountain and mountain in stage classification, decided by race officials, can be controversial. The Giro d'Italia
Giro d'Italia
The Giro d'Italia , also simply known as The Giro, is a long distance road bicycle racing stage race for professional cyclists held over three weeks in May/early June in and around Italy. The Giro is one of the three Grand Tours , and is part of the UCI World Ranking calendar...

 has had a reputation of labeling selective, very difficult stages as merely medium mountain.

"Breakaway" stages

Lastly, a handful of stages each year are known as being "good for a breakaway" -- when one or a few riders attacks the peloton and beats it to the finish line. Typically these stages are somewhere between flat and mountainous. Breakaway stages are where the rouleurs, the hard-working, all-around riders who make up the majority of most teams, get their chance to grab a moment in the spotlight. (The climbers will want to save their energy for the mountains, and the sprinters are not built for hills.)

Special rules

In the big multi-day events like the Tour or the Giro, there is a competition for the Best Sprinter (e.g. maillot vert in the Tour). Sprinters collect points for being one of the first to finish the stage and also for being one of the first three to finish an "intermediate" sprint. Sprinters also can get time bonuses, meaning that good sprinters may lead the general classification during the first few stages of a big multi-day event.
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