Kipruto finished third in 2018 Tokyo Marathon.
They termed his win a surprise.
It was sweet victory for the sole Kenyan representative in the race.
Jepkosgei of Kenya had to settle for second place.
Kenswed, a brain child of the marathoner, started 10 years ago.
Brasher said that it was a great honour hosting the World's greatest marathoner to plant the first tree.
Korir is happy with the progress made towards the hosting of the two championships.
Kenyan women have won the last six editions of the race.
The London Marathon is set for Sunday.
Keru Nderi (4:36:39) said she was inspired by Kenya’s elite athletes.