The 2013 Tour of the Basque Country was the 53rd running of the Tour of the Basque Country cycling stage race. It started on 1 April in Elgoibar and ended on 6 April in Beasain, and consisted of six stages, including a race-concluding individual time trial. It was the ninth race of the 2013 UCI World Tour season.

The race was won by Colombia's Nairo Quintana of the , after gaining enough time on the final time trial stage to move ahead of the previous race leader Sergio Henao of . Quintana – the winner of the race's queen stage, the fourth stage, to Eibar–Arrate – had trailed by six seconds going into the stage, but overturned this disadvantage to eventually win the race by 23 seconds over Henao's teammate Richie Porte. Quintana also won the points classification on the final stage, surpassing Henao in that competition also. Porte, winner of the fifth stage, had started the stage in third place but also overhauled Henao, who eventually finished the race third. Third stage winner Henao finished the race 11 seconds down on Porte, and 34 down on his countryman Quintana.

The race's other jerseys both went to rider Amets Txurruka; having featured in the opening stage breakaway, Txurruka led the mountains and sprints classifications from start to finish, taking home the red and white polka dot and orange jerseys respectively. The teams classification was won by the , after placing Beñat Intxausti inside the top ten overall as well as Quintana.

Teams As the Tour of the Basque Country was a UCI World Tour event, all UCI ProTeams were invited automatically and obligated to send a squad. Originally, eighteen ProTeams were scheduled to be invited to the race, with two other squads – and  – given wildcard places, and as such, would have formed the event's 20-team peloton. subsequently regained their ProTour status after an appeal to the Court of Arbitration for Sport. With not originally invited to the race, race organisers announced their inclusion to the race, bringing the total number of teams competing to twenty-one.

The 21 teams that competed in the race were:

Among the 164-rider start list – each team entered eight riders with the exception of and , who entered seven, and , who entered six – were four previous winners of the race. 2000 and 2011 winner Andreas Klöden was part of the squad, and 2007 victor Juan José Cobo was part of the for the race. Another double winner from previous years, Alberto Contador – who won in 2008 and 2009 – was the team leader for , while Samuel Sánchez looked to defend his title at the race with , having won the race in the final time trial in 2012.

Stages

Stage 1 1 April 2013 — Elgoibar to Elgoibar,

The opening stage of the 2013 Tour of the Basque Country was expected to be one of two chances for sprinters to be prevail over the course of the race as the stage itself was lumpy on a circuit in and around Elgoibar. During the parcours, there were a total of six categorised climbs, including the first-category Alto de Azurki at an average gradient of 7.8%, although the steepest of the six climbs preceded the Alto de Azurki, as the Alto de Endoia averaged 9.6% over its duration. The final climb of the Alto de San Miguel summited out with remaining before the finish in Elgoibar. There were also three intermediate sprint points in the second half of the stage in Elgoibar itself, Berriatua and in Markina.

After an initial seven-rider move got away early in the stage, the day's primary breakaway was a pair of riders, with Basque rider Amets Txurruka of the team being joined by 's Laurent Didier on the day's first categorised climb, the second-category Alto de Asensio. The duo went across the summit with an advantage of around two-and-a-half minutes, before reaching a maximum of around 5' 15" at one point during the stage. Thereafter, it was left to to initiate the chase, doing the majority of the pacing before , and took over as the stage neared its conclusion. Txurruka left Didier behind on the penultimate climb, the Alto de Kalbario, pulling over a minute clear as the peloton bore down and ultimately caught Didier.

had picked up the front of the peloton once again, as they continued to reduce the advantage that Txurruka held, and was caught with around remaining, prior to the day's final climb. The took up the pace on the climb itself, looking to protect their leader Nairo Quintana, attempting to shell riders out of the back of the peloton. Towards the summit of the climb, several riders crashed – including 's Jurgen Van den Broeck, and duo Tony Martin and Dries Devenyns; the latter abandoned with a fractured radial bone in his left arm – and as a result, the peloton split into several groups. At the front was a group of seventeen riders including favourites Alberto Contador of , Quintana, 's Richie Porte and Tejay van Garderen of the . After a lead-out from teammate Pieter Weening, Simon Gerrans sprinted to his third stage victory of the year ahead of a fast-finishing Peter Velits of .

Stage 1 Result RiderTeamTime 1 2 s.t. 3 s.t. 4 s.t. 5 s.t. 6 s.t. 7 s.t. 8 s.t. 9 s.t. 10 s.t.General Classification after Stage 1 RiderTeamTime 1 2 + 0" 3 + 0" 4 + 0" 5 + 0" 6 + 0" 7 + 0" 8 + 0" 9 + 0" 10 + 0"

Stage 2 2 April 2013 — Elgoibar to Vitoria-Gasteiz,

The second stage of the race was seen as the most likely to end in a sprint finish out of the five mass-start stages in the 2013 edition. Although there were five categorised climbs during its itinerary, including two second-category climbs inside the opening of the stage – the second of these, the Alto de Gatzaga, averaging a gradient of 10.8% – the gradients of the three third-category climbs late in the stage were not expected to cause major damage in the peloton. Vitoria-Gasteiz was hosting a stage finish of the Tour of the Basque Country for the second year in succession; in 2012, Daryl Impey won the second stage after attacking inside the final kilometre for the team, and managed to hold off a fast-finishing main field, led home by teammate Allan Davis.

's home rider Amets Txurruka played a part in the breakaway for the second day in a row, although on this occasion, he had no other riders to collaborate with the pacing off the front. Txurruka, in the red and white polka-dot jersey as mountains classification leader, attacked prior to the day's first categorised climb, the Alto de Elgeta, commencing over at the front of the race, solo. Txurruka's maximum lead over the rest of the field came on the descent from the Alto de Gatzaga, reaching around five-and-a-half minutes. Txurruka extended his lead in both the mountains and sprints classifications as moved to the front of the peloton, and started the chase of Txurruka in earnest. On the Alto de San Martin, Jens Voigt () and 's Adriano Malori attacked from the peloton, and after around of chasing, caught up to Txurruka. The three riders were eventually caught one-by-one on the run-in to Vitoria-Gasteiz, setting up the final sprint, and with a lead-out from race leader Simon Gerrans and teammate Michael Matthews, Impey repeated his 2012 victory ahead of 's Francesco Gavazzi; Gavazzi's second top-four finish allowed him to take the race lead from Gerrans.

Stage 2 Result RiderTeamTime 1 2 s.t. 3 s.t. 4 s.t. 5 s.t. 6 s.t. 7 s.t. 8 s.t. 9 s.t. 10 s.t.General Classification after Stage 2 RiderTeamTime 1 2 + 0" 3 + 0" 4 + 0" 5 + 0" 6 + 0" 7 + 0" 8 + 0" 9 + 0" 10 + 0"

Stage 3 3 April 2013 — Vitoria-Gasteiz to Trapagaran,

Moving away from the sprinter-friendly finishes of the opening two days, the third stage again included five categorised climbs over the parcours, with two second-category climbs – the Alto de la Reineta and the finishing climb of La Lejana – being the most testing of the day's race. La Lejana also incorporated a steep kick to the finish line in Trapagaran; the final of the stage was to be completed on roads averaging a gradient of around 21%, although the climb as a whole, averaged only 5.7%. As a result of this, it was expected that the first major time gaps would come into play for the remainder of the race, and that the overall race contenders would be looking to gain some time ahead the following two mountain stages, and the final day time trial. The race remained together for most of the opening hour, with several moves being shut down before the riders could establish any legitimate gap from the main field.

Continuing his perfect record of being in the stage breakaway every day, Amets Txurruka () had company out front – unlike his second stage solo attack – as he was joined by teammate Omar Fraile, Daniel Navarro of , 's Mikel Landa and Romain Bardet of the team. The quintet's lead reached a maximum of around five-and-a-half minutes during the stage, before the advantage was steadily reduced after that point. Txurruka continued to extend his advantages in both the sprints and mountains classifications; he led across all three intermediate sprint points – in Amurrio, Trapagaran itself, and Muskiz – and four of the five categorised climbs. The leaders were eventually brought back to the peloton with around remaining.

At the foot of the climb, made their way to the front of the peloton with Nicolas Roche and Chris Anker Sørensen leading their train, protecting their leader Alberto Contador. After 's Wout Poels had an attack quickly negated by the , José Herrada picked up the lead of the group and set about shelling riders from the back of the group due to exhaustion. Colombian riders were prominent in the group; after Sergio Henao () had attacked, been joined by Herrada's teammate Nairo Quintana and had been brought back, 's Carlos Betancur went on the attack with remaining and was joined by rider Giampaolo Caruso. Betancur and Caruso remained clear into the closing stages when they were joined by Henao, who had attacked from a thirty-rider group. Caruso faded on the closing straight as Henao and Betancur went shoulder-to-shoulder in the closing sprint; Henao crossed the line first for his second win of the season, ahead of Betancur, who had raised his arm in protest at the finish, feeling that Henao had pushed him against the barrier. Henao's victory also allowed him to take the lead of both the points classification, and more importantly, the race lead overall.

Stage 3 Result RiderTeamTime 1 2 s.t. 3 + 5" 4 + 8" 5 + 10" 6 + 10" 7 + 10" 8 + 10" 9 + 16" 10 + 21"General Classification after Stage 3 RiderTeamTime 1 2 + 8" 3 + 10" 4 + 10" 5 + 10" 6 + 10" 7 + 21" 8 + 21" 9 + 21" 10 + 21"

Stage 4 4 April 2013 — Trapagaran to Eibar–Arrate,

For the fifth successive year, the Tour of the Basque Country included a stage finish in Eibar-Arrate, including the punchy climb of the first-category Alto de Usartza, an ascent with an average gradient of 6.7%, but with gradient in places at over 11%. The climb itself levelled out with remaining of the stage, before a slight downhill run to the finish. The Alto de Usartza was the fifth and final climb of the day's itinerary, starting in the previous day's finishing town of Trapagaran; the only other climb that was not rated as second-category, was the first-category Alto de Ixua, which was the day's steepest climb, averaging over 10%, and summiting with around remaining. Although not in top form, 's Samuel Sánchez was seen as the stage favourite, having won the previous three finishes at Eibar-Arrate in the Tour of the Basque Country. It was also seen as the queen stage of the race.