María Fernanda Mackenna Cooper (born 2 December 1986, in Santiago) is a Chilean sprinter who competes in the 200 and 400 metres.^[2] She has won multiple medals at regional revel.

Year	Competition	Venue	Position	Event	Notes
Representing  Chile
2001	South American Junior Championships	Santa Fe, Argentina	8th	100 m	12.91
			10th (h)	200 m	25.99
			4th	4 × 100 m relay	47.49
			4th	4 × 400 m relay	3:51.05
2002	South American Games	Belém, Brazil	5th	100 m	12.33
			6th	200 m	25.21
			3rd	4 × 100 m relay	47.11
			4th	4 × 400 m relay	3:49.09
	South American Junior Championships	Belém, Brazil	5th	100 m	12.33
			6th	200 m	25.21
			3rd	4 × 100 m relay	47.11
			4th	4 × 400 m relay	3:49.09
	South American Youth Championships	Asunción, Paraguay	4th	100 m	12.63
			3rd	200 m	25.02 (w)
			5th	4 × 100 m relay	51.3
			3rd	4 × 400 m relay	2:15.83
2003	South American Junior Championships	Guayaquil, Ecuador	1st	4 × 100 m relay	46.54
			4th	4 × 400 m relay	3:52.37
	Pan American Junior Championships	Bridgetown, Barbados	6th	4 × 100 m relay	46.38
2004	South American U23 Championships	Barquisimeto, Venezuela	2nd	200 m	24.47
			2nd	4 × 100 m relay	45.67
			2nd	4 × 400 m relay	3:48.38
	Ibero-American Championships	Huelva, Spain	9th (h)	200 m	25.28
			–	4 × 100 m relay	DQ
2005	South American Championships	Cali, Colombia	6th	400 m	55.52
			3rd	4 × 100 m relay	44.77
			3rd	4 × 400 m relay	3:40.49
	Pan American Junior Championships	Windsor, Canada	7th	400 m	55.13
	South American Junior Championships	Rosario, Argentina	4th	200 m	24.53 (w)
			3rd	400 m	55.23
			5th	4 × 100 m relay	47.97
			4th	4 × 400 m relay	3:47.66
2006	South American Games / South American U23 Championships	Buenos Aires, Argentina	2nd	4 × 100 m relay	46.63
			4th	4 × 400 m relay	3:46.22
2007	South American Championships	São Paulo, Brazil	6th	200 m	24.47
			5th	400 m	55.43
			3rd	4 × 100 m relay	45.34
			3rd	4 × 400 m relay	3:55.13
	Pan American Games	Toronto, Canada	21st (h)	200 m	24.97
			10th (h)	4 × 100 m relay	45.50
2011	South American Championships	Buenos Aires, Argentina	6th	200 m	24.56
			6th	400 m	55.80
			3rd	4 × 100 m relay	46.42
			3rd	4 × 400 m relay	3:49.51
2012	Ibero-American Championships	Barquisimeto, Venezuela	9th (h)	200 m	23.91
2013	South American Championships	Cartagena, Colombia	7th	200 m	23.91
			4th	4 × 100 m relay	45.53
	Bolivarian Games	Trujillo, Peru	4th	400 m	54.99
			4th	4 × 100 m relay	45.31
			3rd	4 × 400 m relay	3:41.74
2014	South American Games	Santiago, Chile	4th	200 m	24.01
			4th	400 m	53.49
			2nd	4 × 100 m relay	45.09
			3rd	4 × 400 m relay	3:37.42
	Ibero-American Championships	São Paulo, Brazil	4th	400 m	54.47
2015	South American Championships	Lima, Peru	4th	400 m	54.96
			3rd	4 × 100 m relay	44.83
			3rd	4 × 400 m relay	3:40.56
	Pan American Games	Toronto, Canada	10th (h)	4 × 100 m relay	45.38
			12th (h)	4 × 400 m relay	3:41.35
2016	Ibero-American Championships	Rio de Janeiro, Brazil	7th	400 m	54.60
			3rd	4 × 400 m relay	3:36.16
2017	South American Championships	Asunción, Paraguay	11th (h)	200 m	24.48
			10th (h)	400 m	56.67
			3rd	4 × 400 m relay	3:40.00
	Bolivarian Games	Santa Marta, Colombia	3rd	400 m	54.05
			1st	4 × 400 m relay	3:37.93
2018	South American Games	Cochabamba, Bolivia	3rd	400 m	53.60
			2nd	4 × 400 m relay	3:33.42
	Ibero-American Championships	Trujillo, Peru	4th	200 m	24.54
			6th	400 m	54.52
			5th	4 × 400 m relay	3:43.56
2019	World Relays	Yokohama, Japan	6th (B)	4 × 400 m relay	3:33.54
	South American Championships	Lima, Peru	6th	400 m	54.27
			4th	4 × 400 m relay	3:37.35
	Pan American Games	Lima, Peru	7th	4 × 400 m relay	3:39.95
2020	South American Indoor Championships	Cochabamba, Bolivia	2nd	200 m	24.24
			2nd	400 m	54.45
2021	World Relays	Chorzów, Poland	14th (h)	4 × 400 m relay	3:41.28
	South American Championships	Guayaquil, Ecuador	6th	400 m	55.45
			2nd	4 × 400 m relay	3:34.89
2023	Pan American Games	Santiago, Chile	6th	4 × 400 m relay	3:37.00

Outdoor

• 100 metres – 11.85 (+1.5 m/s, Santiago 2012)
• 200 metres – 23.67 (+0.9 m/s, Santiago 2012)
• 400 metres – 53.13 (Santiago 2018)

Indoor

• 200 metres – 24.53 (Albuquerque 2016)
• 400 metres – 54.45 (Cochabamba, 2020)