The sign-up period for this year's The Straits Times Run has been extended by two weeks to June 28 to allow more of those interested to take part in the July 16 event.

The extension comes as preparations for the run enter the final stretch. Over the next few weeks, participants who have signed up for the run can look forward to clinics on the medical aspects of running as well as go on a run with national marathoner Mok Ying Ren, who has been helming a training programme for participants.

Doctors from Mount Elizabeth Hospitals will be sharing running and health tips in three free clinics.

The first will be held on June 24, from 2.30pm to 4.30pm, at the Singapore Management University's B3 Bistro in Stamford Road.

Orthopaedic surgeons Lim Mui Hong and Ramesh Subramaniam will be sharing their expertise at the clinic. Dr Lim will be talking about how runners can best prepare for, and recover after, the run.

"Pre-run preparation is important as it minimises the risk of injury and allows runners' bodies to properly adapt to the demands of the race," he said. "Likewise for (post-run) recovery - the body needs to recover from fatigue and the amount of stress placed on the joints."

Dr Ramesh will be talking about common running injuries, such as Achilles tendinitis.

The June 24 clinic is limited to 50 slots and those interested can sign up at www.straitstimesrun.com. Those who want to sign up for the run can also do so at the same website. However, do note that participants will not be able to personalise their race bibs if they sign up after June 15.

The next two clinics and the run with Mok will be held at the weekends of July 1 and July 8.

The run's race pack collection will be held from July 6 to 9, between 11am and 8pm, at the Suntec City North Atrium.