Sandra Brown (ultradistance athlete) Sandra Brown (ultradistance athlete) Sandra Brown (born 1 April 1949) is a British ultra distance walker / runner who holds a number of world records in the field of long distance walking. After a childhood which included many long family walks 'off the beaten track', Brown completed her first formal marathon in 1982 in Winchester, at age 33 years. That same year saw her enter her first 'ultra' (a race of a distance beyond the marathon's 26 miles 385 yards) with the 100 km Surrey Summits in April and a Long Distance Walkers Association (LDWA) crosscountry 100 mile event along
2012 Olympic Marathon Course as 42.195 km and specifically state that the course must not be less than this distance. The rules further state that in Olympic competition the standard distance may not be exceeded by more than 0.1%. In order for a marathon performance to be ratified as a world record by the IAAF, the course must also meet other criteria that rule-out "artificially fast times" produced on courses aided by downhill slope or tailwind: the distance between start and end points when measured in a straight line should not exceed 50% of the length of the course (21.092 km in the case