NAIROBI, March 29 (Xinhua) -- Kenya's veteran road runner Mathew Kisorio and Bornes Kitur spearhead the elite group of Prague Marathon on May 5.

Kenya's Kisorio, who ran his best time of 2:04:53 in finishing third in Valencia last year, could challenge the course record of 2:05:39.

"I am in top form and will first seek to shake off the opposition and secure the victory, then see if I can run faster time. The course record is not hard to challenge, I will take it in my strides," said Kisorio on Friday.

Morocco's El Mahjoub Dazz, who was just behind Kisorio in Valencia in 2:05:26 and Kenya's Amos Kipruto, who has a best time of 2:06:23, could also challenge.

Kisorio's brother Peter Kimeli Some, a former Paris marathon champion, Yego Solomon Kirwa and Paul Maina are others to watch for.

European runners are led by Oleksandr Sitkovskyy, who has run 2:09:11.

In the women's race, Kenya's Bornes Kitur is back to defend her title, which she won when she ran her best time of 2:24:19.

However, she must give her best show in order to beat Israel and European 10,000m champion Lonah Salpeter who is two seconds quicker than Kitur. Salpeter, who switched from Kenya to Israel after marriage, had pitched camp in Iten to train.