World Marathon record holder Eliud Kipchoge has prioritised recovery before making a decision on his next marathon.
Kipchoge, who flagged off the the London marathon men's elite race last Sunday that was won by Kenya's Kelvin Kiptum, said he is firmly focused on the challenges ahead.
"Thank you London for having me. I felt inspired to meet so many runners from around the world. Their energy motivates me for the challenges ahead. I'm heading back to Kenya to recover and make plans for my next marathon," Kipchoge posted on his twitter account.
Kipchoge has won the London and Berlin Marathons four times apiece.
Speaking on BBC One before flagging off the race, he said: "I love being in London. The crowd is always wonderful and it's great to see how the running community is coming together. London is like home to me and it is the place to be for a marathon.
On Sunday April 16, Kipchoge finished sixth in the Boston marathon where he was making his debut. The 38-year-old who is a two-time Olympic champion, failed to sparkle in the much-hyped marathon.
Defending champion Evans Chebet won the Boston Marathon, surging to the front at Heartbreak Hill to cut the tape in a time of 2:05:54.