[1] The nation's best placing in the contest was sixth, which it achieved in 2006 with the song "We Are the Winners" performed by LT United.

[2] On 17 October 2017, LRT announced the organization of "Eurovizijos" dainų konkurso nacionalinė atranka, which would be the national final to select Lithuania's entry for Lisbon.

The competition involved a nine-week-long process that commenced on 6 January 2018 and concluded with a winning song and artist on 11 March 2018.

The ranking developed by both streams of voting was converted to points from 1-8, 10 and 12 and assigned based on the number of competing songs in the respective show.

On 17 October 2017, LRT opened two separate submission forms: one for artists and another for songwriters to submit their songs.

Among the artists was previous Lithuanian Eurovision contestant Erica Jennings, who represented Lithuania in 2001 as part of Skamp.

[18] The two semi-finals of the competition took place at the LRT studios in Vilnius on 24 February and 3 March 2018 and featured seven competing entries each.

The final of the competition took place on 11 March 2018 at the Žalgirio Arena in Kaunas and featured the remaining six entries that qualified from the semi-finals.

The members of the jury consisted of Ramūnas Zilnys (music reviewer), Dalia Ibelhauptaitė (director and playwright), Sasha Song (singer-songwriter), Vytautas Rumšas (actor), Leon Somov (producer and composer), Dovilė Filmanavičiūtė (singer-songwriter) and Milda Adomaitienė (music teacher).

[22][23] Ieva Zasimauskaitė made several appearances across Europe to specifically promote "When We're Old" as the Lithuanian Eurovision entry.

[26] According to Eurovision rules, all nations with the exceptions of the host country and the "Big Five" (France, Germany, Italy, Spain and the United Kingdom) are required to qualify from one of two semi-finals in order to compete for the final; the top 10 countries from each semi-final progress to the final.

On 29 January 2018, an allocation draw was held which placed each country into one of the two semi-finals, as well as which half of the show they would perform in.

The performance began with Zasimauskaitė sitting at the centre of the stage with a spotlight being displayed, and featured yellow lighting at the first chorus.

[31] For the final chorus, Zasimauskaitė moved onto the stage bridge and was met at the end by her husband Marius Kiltinavičius.

Each nation's jury consisted of five music industry professionals who are citizens of the country they represent, with their names published before the contest to ensure transparency.

This jury judged each entry based on: vocal capacity; the stage performance; the song's composition and originality; and the overall impression by the act.

In addition, no member of a national jury was permitted to be related in any way to any of the competing acts in such a way that they cannot vote impartially and independently.

The individual rankings of each jury member as well as the nation's televoting results were released shortly after the final.