Zersenay Tadesse ran a sensational race to win the elite men's race in a new world best time in Newcastle.
In the women's race, Deratu Tulu's speed was too much for her rivals and takes victory from Worknesh Kidane despite tiring in the closing stages.
Conditions were warm and dry, with a slight tailwind pushing the elite fields to quick times.
Around 50,000 amateur runners also took part on the 25th anniversary of the first running of the race.
1129 BST:Tadesse sprints down the final 300m to take the win and smash the world best for the half-marathon by just one second. Berhanu takes second.
1129 BST:Tadesse goes through 12 miles in 54.01. Victory seems assured - but he now has a chance to run the fastest half-marathon of all time
1129 BST: Tadesse still looks strong, and Berhanu shows no sign of closing the gap. But the leader is coming to the toughest part of the course - the long run-in along the sea-front.
1121 BST: Tadesse is running the greatest run of his life - he goes through 10 miles in 44.34, the fastest at this stage in a half-marathon in history.
1118 BST: Tulu hangs on to take the win, with Kidane fighting back for second place. Catherine Ndereba struggles home in seventh place.
1118 BST:Tulu still leads going into the final two miles, but she looks tired. Kidane in second is also struggling, but the gap is closing.
1114 BST: Tadesse runs 4.15 for the seventh mile and has dropped Berhanu. The Olympic 10,000m bronze medallist is on course to smash the course record - but with over half the race to go, has he gone too soon?
1110 BST: Britain's David Weir wins the men's wheelchair race with a dominant performance, while Shelly Woods wins the women's event.
1103 BST: Tadesse and Berhanu are running at an incredible pace - going through six miles in 27.30.
1102 BST: Tadesse makes a move at the six-mile point in the men's elite race and takes the lead from Berhanu for the first time.
1106 BST: Kidane cannot cope with Tulu's speed and a gap begins to open up.
1102 BST: Now it is Adere's turn to come under pressure. Tulu is pushing hard on a fast downhill section and only Kidane can go with her.
1059 BST: Edith Masai has been dropped by the three Ethiopians - Tulu, Adere and Kidane.
1050 BST: Berhanu, confident pre-race, leads at three miles from Zersenay Tadesse.
1050 BST: Berhanu has started like a rocket, dropping all his major rivals within the first mile.
1045 BST: Tulu maintains the fast pace, going through the fifth mile in 5:07 - and she has dropped Ndereba. The athletes are taking on water as the weather warms up.
1041 BST: The men's elite field and the 50,000 amateur runners are underway, with the race started by England cricketer Paul Collingwood.
1038 BST: The main field is almost ready to go - including 20 men dressed as bananas.
1031 BST: The pace at the front slackens, but only fractionally - 5 mins 12 secs for the second mile and 5:14 for the third. All the favourites are in the lead group - Tulu, Ndereba, Adere and Masai.
1021 BST: Tulu tows the leading bunch through the first mile in around five minutes five seconds, a fast pace in good conditions.
1015 BST: The women's elite race is underway in sunny conditions in Newcastle. Deratu Tulu goes to the front as the leaders settle into their rhythm.