The 'Fool's Gold' actress and the cycling champion - who started dating in mid-May - mutually decided to end their relationship, it has been claimed.

A source told a US magazine: "There was no drama or ugliness - they just decided to end things. There is no hatred, just sadness."

Kate, 29, and Lance, 36, had been seen at various events together, including his three-day Lance Armstrong Livestrong Summit in Columbus, Ohio, last weekend - where they finally decided to part ways.

They spent American Father's Day together, and were accompanied to lunch by Kate's son Ryder and his father Chris Robinson. Kate had also introduced Lance to her mother Goldie Hawn.

Since splitting from Chris in 2007, Kate has been romantically linked to Owen Wilson and Dax Shepard.

Lance was previously engaged to singer Sheryl Crow and was also reported to have dated Ashley Olsen.