All Voice of Russia programs will end with information about the Beslan children and their families' urgent need for financial aid.
The organizers of the marathon said donations should be made individually.
The Voice of Russia has been cooperating with a special commission in Beslan, whose members include former hostages. The North Ossetian government has also provided support to the marathon.
The Voice of Russia Web site offers detailed information in 17 languages about the marathon and the accounts where donors can transfer money.
People in over 160 countries will be able to hear the broadcasts live or online.
The radio station's correspondents will also report from Beslan about how the charity donations will be used. At the end of the marathon, further details will be available on www.vor.ru.
Last September, gunmen seized school number one in Beslan, North Ossetia (Russia's North Caucasus republic). The attack left 331 people dead, including 186 children.