Around 100,000 people took part in 230 events last year.
People around the midlands will walk, run or swim tomorrow to remember those who have died by suicide.
The annual 'Darkness Into Light' kicks off at 4.15am tomorrow morning, to raise funds for Pieta House.
The charity estimates around 100,000 people took part in 230 events last year.
Martin Dollard is taking part in a 5km walk beginning at the Midlands Prison - he explains why he's getting involved:
Here are the locations in the midlands we're aware of so far - feel free to let us know if your local community or club is hosting an event.
LAOIS
Portarlington GAA Club
Midlands Prison, starting at 4.15am - R32F796,
Lions AFC, Cork Road, Durrow - 4.15am - R32 PD26
OFFALY
Banagher College, Colaiste Na Sionna, R24 WR22
St Mary's Secondary School Edenderry, R45 DA33
Lough Boora Parklands, Lea Beg, Boora Leabag, Tullamore, Offaly R35 DA50
WESTMEATH
Athlone Town Football Stadium, N37 P7D7
St. Loman's GAA Club