LATEST: Actress Katie Holmes has denied reports she is planning to take part in the Boston, Massachusetts marathon. The Hollywood star was rumoured to have registered for the 26.2 mile (42.2 kilometre) race, which takes place in April (08), following her successful run in the New York City marathon in November (07). She completed that race in five hours and 30 minutes. But Holmes' publicist insists the claims are false, simply telling, "Not true!"