Hellen Kimaiyo Kipkoskei (born September 8, 1968 in Moiben) is a retired runner from Kenya.

She won many continental competitions. She competed at the 1984 Summer Olympics aged less than 16 ^[1] and at the 1992 Summer Olympics. She is also a multiple Kenyan champion.^[2]

In addition, she was a successful road runner. She won the Peachtree Road Race three times a row (1996–1998) ^[1] and Dam tot Damloop four times a row (1992–1995).^[3] Kimaiyo won Zevenheuvelenloop in 1995. She won in 1994.^[4]

She held the African records for 1500 and 3000 metres.^[5]

Kimaiyo went to the Singore Girls Secondary School in Iten. She is married to Charles Kipkorir, who is also a former Kenyan runner. Soon after the 1984 Olympics she became pregnant and gave birth to her first child. She had a second child following her 1990 pregnancy.^[6]

Representing  Kenya

Year	Competition	Venue	Position	Event	Notes
1985	African Championships	Cairo, Egypt	1st	3000 m
			3rd	1500 m
1987	All-Africa Games	Nairobi, Kenya	2nd	3000 m
1989	African Championships	Lagos, Nigeria	1st	3000 m
			2nd	1500 m
1992	World Cross Country Championships	Boston, United States	11th	Long race
			1st	Team race
	Summer Olympics	Barcelona, Spain	9th	10,000 m
1993	World Cross Country Championships	Amorebieta, Spain	12th	Long race
			1st	Team race
1994	World Cross Country Championships	Budapest, Hungary	12th	Long race
			3rd	Team race

• List of African Games medalists in athletics (women)
• List of African Championships in Athletics medalists (women)

• Hellen Kimaiyo at World Athletics

Sporting positions
Preceded by Liz McColgan	Zevenheuvelenloop Women's Winner (15km) 1995	Succeeded by Marleen Renders