[1] After ordination he carried out his pastoral work as parochial vicar in Lucrezia, where he remained from 1965 to 1967, and San Michele al Fiume, a hamlet of Mondavio, from 1967 to 1970.

In that year he was appointed educator and animator at the regional seminary of Fano, where he then held the position of pro-rector and subsequently rector, from 1972 to 1988.

[2] On 13 June 1978, he received the honorary title of Chaplain of His Holiness from Pope Paul VI.

On 6 January 1997, he received episcopal consecration, in St. Peter's Basilica in Vatican City, through the imposition of the hands of the pontiff himself, co-consecrating archbishops Giovanni Battista Re and Myroslav Marusyn.

Lucarelli resigned from his position due to the fact that he had reached the age limit, from the pastoral governance of the diocese of Rieti, which was accepted by Pope Francis on 15 May 2015.