Congratulations if you're running the Virgin Money London Marathon this year.
Guinness World Records is partnered with the Virgin Money London Marathon to provide runners with record verification on the day of the race.
At the 2013 event there were over 70 official Guinness World Records attempts, ranging from the Fastest Marathon Carrying an 80lb pack to the Fastest Marathon in a Two-Person Pantomime Horse Costume.
An official Guinness World Records attempt is a great way of enhancing your Virgin Money London Marathon experience, as well as potentially raising awareness and money for your chosen charity.
You can help make the 2014 Virgin Money London Marathon the best yet by attempting to break a world record on the day.
It's a great way of raising awareness and funds for your charity; and who knows, you might make history!
If you wish to attempt a record, please make a free application.
The deadline for applications is Friday 21 March 2014.
Below is a full list of the 23 records that were broken at the 2013 Virgin Money London Marathon.
Fastest marathon in film character costume (male)
David Stone (as Jack Sparrow)
Fastest marathon in a nurse's uniform (female)
Fastest marathon in a nurse's uniform (male)
Fastest marathon dressed as a sailor
Fastest marathon in a suit
Fastest marathon dressed as a lifeguard
Fastest marathon in school uniform (female)
Fastest marathon in school uniform (male)
Fastest marathon dressed as an astronaut
Fastest marathon dressed as an insect (female)
Laura Bartlett (as a bee)
Fastest marathon wearing a wetsuit
Fastest marathon carrying a 40-lb pack
Fastest marathon in martial arts uniform (female)
Fastest marathon in a full-body animal costume (male)
Fastest marathon in a military dress uniform (male)
Olivier Hamar (as Napoleon)
Fastest marathon dressed as a love heart (male)
Fastest marathon dressed as a doctor (female)
Fiona Smith Jenkinson
Fastest marathon by a mascot (female)
Wendy Shaw (as Alfie, Guide Dogs mascot)
Fastest marathon dressed as an organ (female)
Katherine Stephens (as a brain)
Fastest marathon dressed as a shoe (female)
Fastest marathon dribbling a football
Fastest marathon carrying an 80-lb pack
Longest scarf knitted whilst running a marathon
2.05m (time of 5:54:23)