|Date of birth:||20.08.1985|
|Place of birth:||Toruń, Poland|
|Sporting heroes:||Tony Rickardsson|
|Highest General Classification rank||11 (2014)|
His biggest achievements are: gold (2005) and silver (2003, 2006) medals of Individual Poland Championships U21, in Team Poland Championships he has: gold (2008), silver (2003, 2007,2009, 2013) and bronze (2010, 2012) - all medals with Unibax Torun. One of the greatest successes is definitely a victory in a Grand Prix tournament in Torun last year. He was riding there with a Wild Card. In the international events he won with Polish team gold medals of SWC in 2009 and Team World Championships U21 (2006). He is the rider of the club from Torun from the beginning of his career.
Miedziński won SEC Challenge 2014 in Debrecen. After regular phase of the tournament he scored 12 points, the same as another Pole Janusz Kołodziej. However the riders resigned from additional heat and Miedziński won because he beat Kołodziej in one of the heats.