The 37-year-old continued his dominant start to the Wheelchair Series XV of the Abbott World Marathon Majors as he looks to win his fifth series and third in a row.

His experience helped him prevail through the wet conditions, completing the race in 1 hour 17min 6sec.

In second was Daniel Romanchuk of the USA, who finished in 1:27:45, while rounding off the podium was Jetze Plat of the Netherlands, who completed the race in 1:28:35.

"It was difficult in these conditions but I was prepared for rain and everything went perfect," said Hug.

"I just tried to go as fast as I could and see what was possible. 

"To do this fast time on this course in these conditions is incredible. 

"You have to break softly in the wet, and crossing the tram lines was also difficult, and the up-hills were really tough but in downhills you have time to recover."

Hug continues a streak of first place finishes that started in 2021, where he came second behind Romanchuk in the Chicago Marathon.

In the women's edition, Scaroni finally managed to win her first title in nine Boston Marathon appearances.

The Tokyo 2020 champion won the race comfortably, finishing five minutes ahead of second-placed Madison de Rozario of Australia, while in third was Japan's Wakako Tsuchida.

"I was super disappointed, but I’ve done marathons where I didn’t have a key, so I learned to carry one," said Scaroni.

"I just tightened as much as I could and hoped I could maintain my gap. 

"I’m happy it didn’t get loose again.

"I have come to Boston since I was 12, it’s been one of my all-time favourite courses but it challenged me, the rain challenged me and the crowds are here rain or shine here to support you."

Switzerland's Manuela Schaer, who won the last three editions of the Boston Marathon, was unable to finish the race.

The series now heads to London on April 23.