2009 World Masters Athletics Championships is the eighteenth in a series of World Masters Athletics Outdoor Championships that took place in Lahti, Finland from 28 July to 8 August 2009.
The main venue was Lahden Stadion located within Lahden Urheilukeskus.
Supplemental venues included in , Nastola Sport Field, Kisapuisto Field for throwing events,
and Fellmaninpuisto for start and finish of the Marathon.
This Championships was organized by World Masters Athletics (WMA) in coordination with a Local Organising Committee (LOC): Virpi Hurri, Hannu Nurminen, Pekka Mäki-Reinikka.
The WMA is the global governing body of the sport of athletics for athletes 35 years of age or older, setting rules for masters athletics competition.
In addition to a full range of track and field events,
non-stadia events included 8K Cross Country, 10K Race Walk (women), 20K Race Walk (men), and Marathon.
Past Championships results are archived at WMA;
the 2009 results are available as a searchable pdf.
Additional archives are available from British Masters Athletic Federation
as a searchable pdf,
from European Masters Athletics
as a searchable pdf
and from Museum of Masters Track & Field
as a searchable pdf.
Masters world records set at this Championships are listed below.