Natalie Dormer(Margaery) starts the 2016 Virgin London Marathon(April 24th) – – #MargaeryTyrell#NatalieDormer#London#Marathon#GoTSeason6#GameofThrones A photo posted by Game of Thrones (@thronesfeed) on Apr 24, 2016 at 4:37am PDT

Among the thousands of participants at Sunday morning’s London Marathon were a handful of celebrities including English actress Natalie Dormer, a star on the HBO television series, Game of Thrones. She completed the 42.195K distance on the same day that season six of the show premiered.

Dormer, 34, plays Margaery Tyrell on the hit series, which she has starred in since 2012. Tyrell is a supporting character in the books but plays a more prominent role in the television series. The actress also appeared in two Hunger Games films.

The television star was running for ChildLine, a 24-hour counselling service for children and young people. She completed Sunday’s race in 3:51:21, negative splitting the race (second half faster than the first).

She also ran the race in 2014 in an almost-identical 3:50:57.

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According to the Telegraph, Dormer will relax this evening by watching the season premiere of the show.

RELATED: Kimmy Gibbler from Full House is an avid marathon runner.

Natalie Dormer is in one of most popular TV shows ever, but unaffected by fame. Lovely lady #GOT #londonmarathon pic.twitter.com/tmwmg2E5bq — Sonja McLaughlan (@Sonjamclaughlan) April 24, 2016

Meanwhile, astronaut Tim Peake also took part in the London Marathon, but from space. He finished the marathon in world record time, clocking 3:35:21. See select moments from his run below:

42 km, while @Space_Station flew almost 100000 km. Congratulations to everyone in #LondonMarathon & #teamastronaut…gonna sleep well tonight! — Tim Peake (@astro_timpeake) April 24, 2016

Below is what Peake’s run looked like as he virtually followed along with competitors running in London on Sunday morning:

RELATED: Ben Affleck and Matt Damon starting running reality show with prize of $1 million.

Cover photo via Gage Skidmore and licensed under Attribution-ShareAlike 2.0.