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| Date | Meet | Equipment | Squat (kg) | Bench (kg) | Deadlift (kg) | Total (kg) | DOTS |
|---|---|---|---|---|---|---|---|
| 2002-02-02 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 60 | — | — | 66.51 |
| 2002-04-27 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 110 | 60 | 150 | 320 | 357 |
| 2002-11-02 | Bikarmót í kraftlyftingum | Single-ply | — | 70 | 165 | — | 401.85 |
| 2002-11-30 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 170 | — | 175.51 |
| 2003-02-01 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 75 | — | — | 83.14 |
| 2003-02-08 | Reykjanesmót í réttstöðulyftu | Single-ply | — | — | 172.5 | — | 191.22 |
| 2003-07-05 | Héðinsmót í bekkpressu | Single-ply | — | 80 | — | — | 83.9 |
| 2003-11-29 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 180 | — | 187.78 |
| 2004-01-31 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 87.5 | — | — | 92.24 |
| 2004-04-24 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 140 | 90.5 | 172.5 | 403 | 417.13 |
| 2005-01-29 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 100 | — | — | 103.87 |
| 2005-11-19 | Reykjanesmót í réttstöðulyftu | Single-ply | — | — | 190 | — | 198.39 |
| 2006-04-22 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 170 | 105 | 200 | 475 | 468.33 |
| 2006-07-01 | Héðinsmót í bekkpressu | Single-ply | — | 100 | — | — | 100.57 |
| 2006-09-30 | Fógetamót í bekkpressu | Single-ply | — | 90 | — | — | 90.02 |
| 2006-11-05 | World Powerlifting Championships | Single-ply | 165 | 105 | 195 | 465 | 468.55 |
| 2007-07-07 | Héðinsmót í bekkpressu | Single-ply | — | 110 | — | — | 109.52 |
| 2007-09-29 | Fógetamót í bekkpressu | Single-ply | — | 91 | — | — | 93.39 |
| 2007-10-14 | World Powerlifting Championships | Single-ply | 180 | 102.5 | 187.5 | 470 | 492.94 |
| 2008-02-02 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 105 | — | — | 105.02 |
| 2008-04-19 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 171 | 106 | 185 | 462 | 461.37 |
| 2008-05-06 | European Powerlifting Championships | Single-ply | 180 | 105 | 170 | 455 | 462.73 |
| 2008-07-05 | Bikarmót í bekkpressu | Single-ply | — | 102.5 | — | — | 105.11 |
| 2008-10-30 | World Powerlifting Championships | Single-ply | 172.5 | 100 | 180 | 452.5 | 468.52 |
| 2008-11-22 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 180 | — | 186.15 |
| 2009-01-31 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 100 | — | — | 103.33 |
| 2009-04-18 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 160 | 102.5 | 175 | 437.5 | 450.9 |
| 2009-05-05 | European Powerlifting Championships | Single-ply | 172.5 | 95 | 170 | 437.5 | 453.03 |
| 2009-11-02 | World Powerlifting Championships | Single-ply | 155 | 95 | 167.5 | 417.5 | 434.78 |
| 2009-11-22 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 170 | — | 175.06 |
| 2009-12-31 | Akureyrarmót í bekkpressu | Single-ply | — | 103 | — | — | 104.24 |
| 2010-01-30 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 105 | — | — | 106.52 |
| 2010-03-13 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 152.5 | 103 | 175.5 | 431 | 439.4 |
| 2010-05-04 | European Open Powerlifting Championships | Single-ply | 165 | 97.5 | 165 | 427.5 | 442.68 |
| 2010-06-05 | Kópavogsmót í kraftlyftingum | Single-ply | 173 | 97.5 | 170.5 | 441 | 455.29 |
| 2010-08-28 | Nordic Powerlifting Championships | Single-ply | 165 | 102.5 | 172.5 | 440 | 455.42 |
| 2010-08-29 | Nordic Bench Press Championships | Single-ply | — | 107.5 | — | — | 110.61 |
| 2010-11-07 | World Powerlifting Championships | Single-ply | 170 | 102.5 | 167.5 | 440 | 455.03 |
| 2010-12-04 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 165 | — | 171.53 |
| 2011-01-29 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 95 | — | — | 100.09 |
| 2011-03-12 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 160 | 95 | 167.5 | 422.5 | 448.41 |
| 2011-05-03 | European Powerlifting Championships | Single-ply | 157.5 | 105 | 175 | 437.5 | 472.83 |
| 2011-11-08 | World Powerlifting Championships | Single-ply | 165 | 97.5 | 175 | 437.5 | 471.86 |
| 2011-12-03 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 176 | — | 190.21 |
| 2012-01-28 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 105.5 | — | — | 114.13 |
| 2012-05-08 | European Open Powerlifting Championships | Single-ply | 162.5 | 100 | 177.5 | 440 | 474.14 |
| 2012-09-15 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 180 | — | 191.4 |
| 2012-11-10 | World Powerlifting Championships | Single-ply | 172.5 | 97.5 | 180 | 450 | 484.92 |
| 2013-01-19 | Íslandsmeistaramót í bekkpressu | Single-ply | — | 100 | — | — | 104.46 |
| 2013-03-23 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 165 | 113 | 180.5 | 458.5 | 474.17 |
| 2013-05-07 | European Open Powerlifting Championships | Single-ply | 182.5 | 110 | 172.5 | 465 | 476.27 |
| 2013-09-14 | Íslandsmeistaramót í réttstöðulyftu | Single-ply | — | — | 190 | — | 189.6 |
| 2013-11-04 | World Powerlifting Championships | Single-ply | 180 | 112.5 | 180 | 472.5 | 472.15 |
| 2013-11-23 | Bikarmót í kraftlyftingum | Single-ply | 180 | 115 | 182.5 | 477.5 | 474.32 |
| 2014-05-07 | European Open Powerlifting Championships | Single-ply | — | 112.5 | 180 | — | — |
| 2014-08-22 | Nordic Powerlifting Championships | Single-ply | 177.5 | 110 | 177.5 | 465 | 465.27 |
| 2014-08-23 | Nordic Bench Press Championships | Single-ply | — | 107.5 | — | — | 107.48 |
| 2014-11-03 | World Powerlifting Championships | Single-ply | 180 | 105 | 182.5 | 467.5 | 469.77 |
| 2015-01-17 | Íslandsmeistaramót í bekkpressu-RIG | Single-ply | — | 110 | — | — | 109.6 |
| 2015-05-06 | European Open Women's Championships | Single-ply | 175 | 115 | 187.5 | 477.5 | 477.96 |
| 2015-05-30 | Íslandsmeistaramót í kraftlyftingum | Single-ply | 182.5 | 112.5 | 188 | 483 | 483.46 |
| 2015-11-09 | World Powerlifting Championships | Single-ply | 177.5 | 112.5 | 182.5 | 472.5 | 473.76 |
| 2016-04-30 | Bikarmót í klassískum kraftlyftingum | Raw | 112.5 | 80 | 157.5 | 350 | 348.46 |
| 2016-07-30 | Íslandsmeistaramót ungmenna og öldunga í klassískum kraftlyftingum | Raw | 107.5 | 77.5 | 155 | 340 | 342.19 |
| 2018-03-17 | Íslandsmeistaramót í klassískri bekkpressu | Raw | — | 72.5 | — | — | 84.34 |
| 2018-03-18 | Íslandsmeistaramót í klassískum kraftlyftingum | Raw | 90 | 65 | 140 | 295 | 341.13 |
| 2018-06-09 | IM ungmenna og öldunga í kraftlyftingum | Single-ply | 137.5 | 77.5 | 168.5 | 383.5 | 439.37 |
| 2018-08-11 | ÍM ungmenna og öldunga í klassískum kraftlyftingum | Raw | 95.5 | 72.5 | 158 | 326 | 376.32 |
| 2018-08-12 | IM ungmenna og öldunga í klassískri bekkpressu | Raw | — | 76 | — | — | 87.58 |
| 2018-10-02 | World Masters Powerlifting Championships | Single-ply | 142.5 | 77.5 | 160 | 380 | 438.5 |
| 2019-01-27 | Reykjavík International Games | Raw | 87.5 | 65 | 150 | 302.5 | 368.72 |
| 2019-05-18 | World Bench Press Championships | Single-ply | — | 82.5 | — | — | 95.29 |
| 2019-07-03 | European Masters Championships | Single-ply | 140 | 80 | 165 | 385 | 443.13 |
| 2020-01-26 | Reykjavik International Games | Raw | 87.5 | 65 | 145 | 297.5 | 346.28 |
| 2020-06-27 | ÍM í réttstöðulyftu | Single-ply | — | — | 165 | — | 190.03 |
| 2020-09-12 | ÍM í kraftlyftingum | Single-ply | 122.5 | 80 | 157.5 | 360 | 413.88 |
| 2021-07-10 | ÍM í réttstöðulyftu | Single-ply | — | — | 157.5 | — | 176.09 |
| 2021-07-10 | ÍM í klassískri réttstöðulyftu | Raw | — | — | 137.5 | — | 152.59 |
| 2023-04-23 | ÍM í klassískri bekkpressu | Raw | — | 55 | — | — | 56.64 |
María Guðsteinsdóttir's career best to date is 483 kg, set in 2015 at age 44. Their total grew 163 kg over 13.1 years between their first meet and that mark (~12.5 kg/year). Career variance was 70% squat-driven.
Career-best meet: Íslandsmeistaramót í kraftlyftingum · KRAFT
vs Single-ply · 72 kg class · masters-1 · drug-tested