He played as a defender for SFK Lyn between 1973 and 1982, the first and sixth season in the First Division (highest tier).
Now Leonhardsen is working as a youth coach in his former club Lyn Fotball.
Lyn Hejinian | Vålerenga Fotball | Skeid Fotball | Stabæk Fotball | Lyn McClements | Lyn | Lyn St. James | SFK Lyn | Lyn Yvonne Abramson | Lyn Fotball | Sandefjord Fotball | Lyn (Src family Kinase) | Lyn Nofziger | Lyn Lifshin | Lyn Larsen | Jodi Lyn O'Keefe | Jaime Lyn Bauer | Carly Lyn | Asker Fotball | Tara Lyn Hart | Lyn Swinburne | Lyn Jones | Lyn Hagan | Lyn (Gjøvik) | Lyn Collins | Lyn Allison | LYN | Løv-Ham Fotball | Kolbotn Fotball | Jennifer Lyn Jackson |