The drones were stopped over 13 Russian regions as well as the Crimean Peninsula, which Russia illegally annexed from Ukraine in 2014.
The attack underlined the growing capability of Ukraine's domestically developed and manufactured long-range drones.
It came a day after Russia fired almost 1000 drones and 34 missiles at civilian areas of Ukraine in the space of 24 hours, extending its usual nightly barrage into daylight hours in one of its biggest aerial attacks of the war. At least six people were killed and around 50 people were injured, Ukrainian authorities said.
The United Nations cultural organisation UNESCO said it was "deeply alarmed" by Russia hitting a World Heritage site - the 17th-century Bernardine Church - in the western Ukraine city of Lviv during that bombardment.
The escalation in aerial attacks comes amid a pause in US-mediated talks between delegations from Moscow and Kyiv, as Washington's attention is diverted by the Iran war and as Ukraine anticipates a spring offensive by Russia's bigger army.
Alexander Drozdenko, governor of the Leningrad region north of Moscow, said 56 drones were shot down there, and a fire broke out in the Baltic Sea port of Ust-Luga as the result of Ukraine's attack.
Ukrainian forces also carried out a missile strike on the Belgorod region on the border with Ukraine overnight, damaging energy infrastructure, its Governor Vyacheslav Gladkov said.
Power, water and heating supplies were disrupted, he said.
In Ukraine on Wednesday, Russian drones smashed into residential areas of the second-largest city, Kharkiv, during the afternoon, injuring at least nine people, according to mayor Ihor Terekhov.
The Ukrainian drone blitz aimed at Russia caught public attention in the Baltic states, which lie northwest of Ukraine and relatively close to potential Russian targets in the Leningrad region, which includes St. Petersburg, where drones came down.
Officials in Estonia, Latvia and Lithuania, which have been close allies of Ukraine in the war, said the drones likely didn't target them.
Estonia and Latvia said the drones were Ukrainian, and Lithuania said the drone was a "stray," without saying who launched it.
Estonian media reported that a drone coming from Russia clipped a power plant's chimney but said electricity production was not disrupted. The plant is around 50km from the port of Ust-Luga that Ukraine targeted.
Also Wednesday, the Latvian defence ministry said a drone had crashed in a region close to Russia. No injuries or damage were reported.
In Moldova, on Ukraine's southwest border, authorities urged citizens to spare electrical energy during peak hours, after Russian strikes on Ukraine's energy grid cut a key power line between Moldova and Romania.
with DPA
