|Full name||Mark Léster Blanco Pineda|
|Date of birth||January 17, 1989|
|Place of birth||Soyapango, El Salvador|
|Height||1.77 m (5 ft 10 in)|
|1997–2004||Fútbol Blanco Sport|
|2008–2009||→ Chalatenango (loan)||28||(5)|
|2012–2012||→ Kongsvinger (loan)||9||(0)|
|2012–2013||→ Marathón (loan)||14||(6)|
|2013–2014||→ Real España (loan)||10||(3)|
|2014||Luis Ángel Firpo||17||(4)|
|2017–||→ San Carlos (loan)||0||(0)|
|2008–2009||El Salvador U20||6||(3)|
|2010–2011||El Salvador U21||(1)|
|2011–2012||El Salvador U23||6||(4)|
|* Senior club appearances and goals counted for the domestic league only and correct as of April 12, 2017.
‡ National team caps and goals correct as of April 12, 2017
Blanco came through the youth ranks at the Fútbol Blanco Sport, and made his debut at Second Division side Atlético Marte in 2004. After a year and another at Telecom, he joined Nejapa and later moved on to Chalatenango on loan before returning to Atlético Marte. He joined Isidro Metapán for the 2010 Clausura season.
He was on a trial with Norwegian club Kongsvinger in January 2012, and the club wanted to sign Blanco. However, nothing happened until the Norwegian transfer window closed on 31 March, but Kongsvinger announced on 30 May that Blanco would join them on loan from 1 August until the end of the season in November. The club was close to bankruptcy and was not able to sign Lester on a permanent deal.
In October 7, 2011 Léster Blanco scored a goal that led to a 2–1 victory against Dominican Republic. On November 2, Léster Blanco scored two goals in Suriname's home territory, giving the salvadorans a 1–3 victory.
In March 24, 2012 Léster Blanco scored a goal in an Under 23 victory 4–0 match against Cuba in minute '4 in the game. Léster Blanco scored against USA in an Under 23 match, leaving USA eliminated in the Pre-olympic tournament.
- El Salvador 2009/10 - RSSSF
- "Léster Blanco klar for KIL". glomdalen.no (in Norwegian). 30 May 2012. Retrieved 13 July 2012.