1 gold medal

2009, Relay, Miskolc, Hungary

9 silver medals

2017, Middle, Tartu, Estonia
2010, Relay, Trondheim, Norway
2010, Long, Trondheim, Norway
2009, Middle, Miskolc, Hungary
2009, Long, Miskolc, Hungary
2008, Long, Olomouc, Czech Republic
2006, Middle, Aarhus, Denmark
2006, Long, Aarhus, Denmark
2005, Relay, Aichi, Japan

5 bronze medals

2023, Relay, Flims Laax, Switzerland
2010, Sprint, Trondheim, Norway
2010, Middle, Trondheim, Norway
2007, Relay, Kiev, Ukraine
2007, Middle, Kiev, Ukraine

Long: Silver last time 2010, Trondheim, Norway
Middle: Silver last time 2017, Tartu, Estonia
Sprint: Bronze 2010, Trondheim, Norway
Relay: Gold 2009, Miskolc, Hungary

2. place: 2 times

WC Overall 2009
WC Overall 2006

3 silver medals

2006, Sprint, Otepää, Estonia
2006, Middle, Otepää, Estonia
2004, Relay, Roskilde, Denmark

Long: 7. place 2006, Otepää, Estonia
Middle: Silver 2006, Otepää, Estonia
Sprint: Silver 2006, Otepää, Estonia
Relay: Silver 2004, Roskilde, Denmark
MixedRelay: DSQ 2016, Jesenik, Czech Republic

2 silver medals

2009, Middle, Salo, Finland
2005, Relay, Notodden, Norway

2 bronze medals

2009, Sprint, Salo, Finland
2009, Relay, Salo, Finland

Long: 5. place 2005, Notodden, Norway
Middle: Silver 2009, Salo, Finland
Sprint: Bronze 2009, Salo, Finland
Relay: Silver 2005, Notodden, Norway

1. place: Once

2006, WC no. 10, Auvergne, FRA, Middle

2. place: 13 times

2017, WC no. 6, Elva-Vitipalu, EST, Middle, WOC
2010, WC no. 8, Trondheim, NOR, Long, WOC
2009, WC no. 7, Miskolc, HUN, Long, WOC
2009, WC no. 5, Miskolc, HUN, Middle, WOC
2009, WC no. 4, Oslo - O-festival, NOR, Long
2009, WC no. 3, Oslo - O-festival, NOR, Middle
2009, WC no. 1, Salo, FIN, Middle, NOC
2008, WC no. 8, Olomouc, CZE, Long, WOC
2007, WC no. 5, Mjölby - O-Ringen, SWE, Sprint
2006, WC no. 7, Århus, DEN, Middle, WOC
2006, WC no. 6, Århus, DEN, Long, WOC
2006, WC no. 2, Otepää, EST, Middle, EOC
2006, WC no. 1, Otepää, EST, Sprint, EOC

3. place: 7 times

2010, WC no. 9, Trondheim, NOR, Middle, WOC
2010, WC no. 7, Trondheim, NOR, Sprint, WOC
2010, WC no. 6, NORT, NOR, Middle
2009, WC no. 9, Postfinancesprint, SUI, Sprint
2009, WC no. 2, Salo, FIN, Sprint, NOC
2007, WC no. 6, Kiev, UKR, Middle, WOC
2005, WC no. 9, Subiaco, ITA, Middle

Individual results:
2001: Springcup, 40. place
Relays:
2011: Venla 2011, 29. place (3. leg, Out: 53. place, In: 11. place, Konnerud IL)
2010: Venla 2010, 9. place (4. leg, Out: 18. place, In: 9. place, Konnerud IL)
2009: Venla 2009, 20. place (4. leg, Out: 42. place, In: 20. place, Konnerud IL)
2008: Venla 2008, 2. place (4. leg, Out: 9. place, In: 2. place, Nydalens SK)
2006: Venla 2006, 3. place (4. leg, Out: 3. place, In: 3. place, Nydalens SK)
2005: Venla 2005, 6. place (4. leg, Out: 3. place, In: 6. place, Nydalens SK)
2002: Venla 2002, 27. place (4. leg, Out: 18. place, In: 27. place, NTNUI)
2001: Venla 2001, 33. place (4. leg, Out: 38. place, In: 33. place, NTNUI)

IOF World Ranking:
World Ranking position: Middle/Long 21 / Sprint 1007 (as of 21/12/2024)
See also all IOF WRE results for Marianne Andersen including updated WR position