Rallying is a very popular sport at the "grass roots" of motorsport—that is, motor clubs. Individuals interested in becoming involved in rallying are encouraged to join their local automotive clubs. Club rallies (e.g. road rallies or regularity rallies) are usually run on public roads with an emphasis on navigation and teamwork. These skills are important fundamentals required for anyone who wishes to progress to higher-level events. (See Categories of rallies.) Short special stage practice events on public roads are in some countries organized by the local clubs, with a permission of the local police, the community normally using the road, and the road authority. The public road is closed during these by the organisers or the police.
Many early rallies were called trials, and a few still are, although this term is now mainly applied to the specialist form of motor sport of climbing as far as you can up steep and slippery hills. And many meets or assemblies of car enthusiasts and their vehicles are still called rallies, even if they involve merely the task of getting there (often on a trailer).
Between 1997 and 2010, the regulations mandated that World Rally Cars must have been built upon a production car with a minimum production run of 2500 units. A number of modifications could be made including increasing the engine displacement up to 2.0L, forced induction (including an anti-lag system), addition of four wheel drive, fitment of a sequential gearbox, modified suspension layout and attachment points, aerodynamic body modifications, weight reduction to a minimum of 1230 kg and chassis strengthening for greater rigidity. The maximum width was set at 1770 mm while front and rear tracks shouldn't exceed 1550 mm.
In countries where there was no shortage of demanding roads across remote terrain, other events sprang up. In South America, the biggest of these took the form of long distance city to city races, each of around 5,000 to 6,000 miles (8,000–9,500 km), divided into daily legs. The first was the Gran Premio del Norte of 1940, run from Buenos Aires to Lima and back; it was won by Juan Manuel Fangio in a much modified Chevrolet coupé. This event was repeated in 1947, and in 1948 an even more ambitious one was held, the Gran Premio de la América del Sur from Buenos Aires to Caracas, Venezuela—Fangio had an accident in which his co-driver was killed. Then in 1950 came the fast and dangerous Carrera Panamericana, a 1,911-mile (3,075 km) road race in stages across Mexico to celebrate the opening of the asphalt highway between the Guatemala and United States borders, which ran until 1954. All these events fell victim to the cost – financial, social and environmental – of putting them on in an increasingly complex and developed world, although smaller road races continued long after, and a few still do in countries like Bolivia.
The First World War brought a lull to rallying. The Monte Carlo Rally was not resuscitated until 1924, but since then, apart from World War II and its aftermath, it has been an annual event and remains a regular round of the World Rally Championship. In the 1930s, helped by the tough winters, it became the premier European rally, attracting 300 or more participants.
Rallies usually present a multitude of moneymaking opportunities for investors because prices are generally rising across the board. But rallies don’t last forever, and they don’t always give advance notice of their arrival, so the investor must know when to buy and when to sell to maximize his or her profits. This means the investor must attempt to "time the market" or gauge when a rally has begun and when it is ending.
The 1974 London-Sahara-Munich World Cup Rally followed four years later. The rally travelled southwards into Africa but a navigational error saw most of the rally become lost in Algerian desert. Eventually only seven teams reached the southernmost point of the rally in Nigeria with five teams making it back to West Germany having driven all legs and only the winning team completing the full distance. This, coupled with the economic climate of the 1970s the heat went out of intercontinental rallying after a second London–Sydney Marathon in 1977. The concept though was revived in 1979 for the original Paris-Dakar Rally. The success of the Dakar would eventually see intercontinental rallying recognised as its own discipline; the Rally Raid.
This particular era was not to last. On the 1986 Rallye de Portugal, four spectators were killed; then in May, on the Tour de Corse, Henri Toivonen went over the edge of a mountain road and was incinerated in the fireball that followed. FISA immediately changed the rules again: rallying after 1987 would be in Group A cars, closer to the production model. One notably successful car during this period was the Lancia Delta Integrale, dominating world rallying during 1987, 1988, 1989, 1990, 1991 and 1992 – winning six consecutive world rally championships, a feat yet unbeaten.