BOSTON—Kenya’s Benson Kipruto won the pandemic-delayed Boston Marathon on Monday when the race returned from a 30-month absence with a smaller, socially distanced feel and moved from the spring for the first time in its 125-year history. Although organizers put runners through COVID-19 protocols and asked spectators to keep their distance, large crowds lined the 26.2-mile course from Hopkinton to Boston as an early drizzle cleared and temperatures rose to the low 60s for a beautiful fall day. They watched Kipruto run away from the lead pack as it turned onto Beacon Street with about three miles to go and break the tape in 2 hours, 9 minutes, 51 seconds. Diana Kipyogei won the women’s race to complete the eighth Kenyan sweep since 2000. A winner in Prague and Athens who finished 10th in Boston in 2019, Kipruto waited out an early breakaway by American CJ Albertson, who led by …