1974 UCI Cyclo-cross World Championships

Bera is a town and municipality situated in the province and autonomous community of Navarre, in northern Spain. The town is traversed by the river Bidasoa before it enters Gipuzkoa at Endarlatsa, eventually flowing into the Cantabrian Sea (Bay of Biscay) between the towns of Hendaye and Hondarribia.

Lesaka is a town and municipality in the province and autonomous community of Navarre, in Spain. It is situated in the merindad of Iruña, in the region of Bortziriak (Five Villas) and to 75 km of the capital of the community, Iruña/Pamplona. The population in 2014 was of 2742 inhabitants. The population centres in Lesaka are the following: Alkaiaga, Auzoberri, Biurrana, Kaztazpegi, Endara, Endarlaza, Frain, Izotzaldea, Lesaka centre, Navaz, Otsango Auzoa, Zala, and Zalain.

The fortifications of Larrun from the late modern period are a series of military works situated on the mountain of Larrun, immediately to the west of the border between Spain and France. Some of the structures were erected during the 1793-1794 campaign and repurposed to impede the advance of the Anglo-Hispano-Portuguese coalition troops, which the future Duke of Wellington led. More than twenty redoubts are distributed across the territories of Ascain, Sare, and Urrugne, with partial coverage also extending to those of Saint-Pée-sur-Nivelle and Biriatou. The battles of the late 18th century were primarily concentrated in the commune of Urrugne. The revolutionary forces were deployed in the Louis XIV, Bertuste, Bayonet, and Emigrés redoubts, situated along the border and overlooking the Bidassoa River as well as the route from Vera de Bidassoa. This configuration proved effective in containing the advance of the Spanish attackers. Théophile de La Tour d'Auvergne, renowned as the "first grenadier of the Republic," distinguished himself notably during these confrontations. The circumstances at the outset of the nineteenth century were markedly distinct. Wellington advanced as a conqueror and successfully breached the Sare lock, subsequently attacking the slopes of Larrun before heading toward Bayonne. The French army, under the command of Marshal Soult, demonstrated valor in their defense of the Zuhalmendi, Grenada, and Madeleine Chapel redoubts. The inadequacy of the defensive position, ill-suited to counterattacks, and the inexperience of the defenders at the Ermitebaïta and Mendibidea redoubts permitted the Anglo-Hispano-Portuguese coalition troops to breach the defensive line and ultimately force the French forces to retreat towards Saint-Pée-sur-Nivelle. The redoubts, situated on elevated terrain, were constructed by two principal architectural designs, tailored to the local topography. Examples of star-shaped redoubts include the Santa Barbara, the so-called "BF 29" (Border Marker 29), and the Bayonet redoubts. Others adopt a fairly regular quadrilateral configuration, exemplified by the Madeleine Chapel redoubt, or a pentagonal shape, as observed in the Emigrés and Olhain Chapel redoubts. A third category encompasses less common shapes, such as the ovoid Louis XIV redoubt in Sare, which is presumed to be a reuse of a protohistoric structure. Thirteen of these fortifications have been designated as historical monuments.

Larrun (Basque: Larhun, Larrun; French: La Rhune [la ʁyn]; Spanish: Larrún [laˈrun]; - 'good pasture', possibly a folk etymology, in French until the 20th century: Larhune) is a mountain (905 m) at the western end of the Pyrenees. It is located on the border of France and Spain, where the traditional Basque provinces of Labourd and Navarra meet. Its prominence is 670 m.

Etxalar is a town and municipality located in the province and autonomous community of Navarre, northern Spain.

Biriatou (French pronunciation: [biʁjatu]; Basque: Biriatu) is a village and a commune in the Pyrénées-Atlantiques department in southwestern France. It is part of the traditional Basque province of Labourd.The village lies on the edge of a hill rising east to the minor mount Xoldokogaina (486 m), the first noticeable prominence across the Spanish-French border at the lower Bidasoa. The hiking trail GR 10 crosses the village, heading east through the southern side of Xoldokogaina. European road carriers and travellers are acquainted with the name, Basque for 'gate/pass of the way' (bide + ate), on account of the border customs and toll at the AP-8 - A-63 motorway to the west of the actual village, often jammed with vehicles and long queues.

The Battle of Sans Culottes Camp (5 February 1794) saw a Spanish army commanded by José de Urrutia y de las Casas attack part of the French Army of the Western Pyrenees under Jean-Henri-Guy-Nicolas de Frégeville. The Spanish assault seized two key positions behind the Bidasoa River but was unable to overrun the main position, called Sans Culottes Camp after an eight-hour contest. The War of the Pyrenees action was fought at a location described as being "in front" of (that is, west of) Saint-Jean-de-Luz near the modern France–Spain border. Ventura Caro had 20,000 troops in the Spanish Army of the West Pyrenees. He ordered his left wing near Irun and center in the Baztan Valley to attack the French camps behind the Bidasoa. French army artillery chief Augustin de Lespinasse gave up the outlying fortifications in order to concentrate his strength in the main camp. By the time Frégeville arrived on the scene, the Spanish attack had lost its momentum. Bon-Adrien Jeannot de Moncey, later a Marshal of France under Napoleon, was promoted to general of brigade for his distinguished actions during the battle.

Urrugne (French pronunciation: [yʁyɲ]; Basque: Urruña) is a village and a commune in the Pyrénées-Atlantiques department in south-western France. It is part of the traditional Basque province of Labourd.

The canton of Hendaye-Côte Basque-Sud (before 2015: Canton of Hendaye) is an administrative division in southern France. At the French canton reorganisation which came into effect in March 2015, the canton was renamed and reduced from 4 to 3 communes: Biriatou Hendaye Urrugne

Arantza is a town and municipality located in the province and autonomous community of Navarre, northern Spain.

Aiako Harria in Basque or Peñas de Aya in Spanish, is a massif east of the town of Oiartzun in the Basque Country. The river Oiartzun rises on its north-western face. The range is very popular with the inhabitants of the area. Other neighbouring towns are Irun on the north and Lesaka on the east. The massif comprises three summits extending 4-odd kilometres north to south in a row, namely Irumugarrieta (806 m), Txurrumurru (821 m) and Erroilbide (837 m). Its characteristic shape can be made out approximately from as far as Bayonne (north), the massif being dubbed the "face of Napoleon" on account of its similar outline, while its actual French name is Les Trois Couronnes. At its western foot, the mountain holds the site Arditurri related to ancient Oiasso with a network of mine corridors carved in the rock and put down to Romans. Some notable mountains around are Bianditz (827 m) on the south, Jaizkibel (547 m) on the west and Larrun (905 m) on the north-east.

Pheasant Island (French: Île des Faisans/Île de la Conférence, Spanish: Isla de los Faisanes, Basque: Konpantzia, Faisaien Uhartea Konferentziako Uhartea) is an uninhabited river island located in the Bidasoa river, located between France and Spain, whose administration alternates between the two nations every 6 months.