ThiruNallar is located around 7 kilometer away from the district headquarter karaikal. It is well connected with karaikal and kumbakonam. There is no train service available to thirunallar but one can reach karaikal railway station which is located around 7 kilometer from temple. Daily train services are available from karaikal railway station to Bangalore, Chennai, Ernakulam, Thanjavur, Trichy, and weekly train is available to Mumbai LT. A meter gauge (MG) train existed since French rule till late in the 20th century, there are plans to revive this old Karaikal- Peralam Junction line which runs via Kovilpatthu , Thirunallar, Selur, Pattucoudy, and Ambaragathur.