Welcome.
The fitness guys will chime in with the data, nutrition and bicycle advice, in several forums. Including 50+, with personal experiences.
2nd on recommendation for slow & steady at first. Listen to your body rather than driving the body to a goal or schedule. Should be doable,

, but who knows the course, conditions, your fitness+dedication. Smooth tires and aero position make it easier.
Have fun. We like pictures.
Ole Miss '73
Is this one like yours?
2014 Fuji Sportif 1.1 from BikeRadar.
Fuji Sportif 1.1 – in brief