Cyclists spotted riding illegally on the pavement will be fined £30 or sent an anti-social behaviour warning letter in a crackdown by Lincolnshire Police.
Officers have set up Operation Riviera after complaints about cyclists endangering pedestrians in Skegness.
Adults seen cycling on footpaths are likely to receive a fixed penalty ticket. Under-16s will have a warning letter sent to their parents.
Police said "robust action" is needed to stop pedestrians being harmed.
PCSO Dave Bunker said: "There are genuine concerns someone is going to be seriously hurt if we can't put a stop to it.
"We need to get the message across that cycling on pavements is inconsiderate, a nuisance and also very dangerous."
Officers will carry out high visibility patrols, targeting the town centre and Parade areas, over the next few weeks.