The Sydney Swans' second- to fifth-year players returned to training on Monday with a tough first session back incorporating plenty of kilometres and skills-based drills.

Alongside the youngsters, Lance Franklin joined the group for the session on Lakeside Oval.

See some images from the first session of the 2020 campaign below.

A few stride-throughs to get warmed up.

And then into the two-kilometre time trial, Jordan Dawson crossing the line first.

Buddy all smiles as he joined in with the second- to fifth-year players for the first day of pre-season ...

... and looking strong as he went through his program.

Tom McCartin, Michael Knoll and Will Hayward jog to their next drill.

A familiar set of eyes watching Will Hayward: Jarrad McVeigh on his first official day as part of the coaching group.

Nick Blakey looking focused.

Irish recruit Barry O'Connor on his first day as a Swan.

Tom McCartin working hard on the ropes.

Oliver Florent getting some air in after completing the sprints.

James Rowbottom sweating it out.

Tom McCartin cooling off.