Career
She represented Italy internationally in cross country running early in her career, but later moved on to road events. She has appeared at the IAAF World Half Marathon Championships on three occasions and ran in the marathon for Italy at the 2008 Beijing Olympics. Her personal best of 2:29:51 hours, set in 2008, came at the latter race.
She started her international career as a cross country runner: she ran as a junior at the 1998 IAAF World Cross Country Championships, made her senior debut at the European Cross Country Championships in 2001, and ran in the short race at the 2003 World Cross Championships.
She recorded a half marathon best of 1:13:42 hours at the Napoli Half Marathon and represented Italy in that event at the 2004 IAAF World Half Marathon Championships, coming 34th. She was 45th at the European Cross Country Championships that December.
Sicari had her best placing at the World Cross Country Championships in 2005, placing 40th in the long race. She was runner-up at the Stramilano half marathon in April, setting a personal best of 1:12:39 minutes behind Anikó Kálovics.
She was selected to compete on the track at the 2005 Mediterranean Games and she was sixth over 10,000 m.
She also represented Italy at the World Half Marathon and the European Cross Country Championships that year. Her debut marathon run came in October 2006 at the Italian Marathon in Carpi. She used the event to test her fitness over the distance and she came third.
A run at the Florence Marathon followed and she fought off a challenge from Gloria Marconi to take a clear victory in 2:34:52 hours, although she slowed in the latter stages due to liver problems.
She eased to victory at the Scalata al Castello 5 km and stated that she was keen to form part of the national marathon team for the 2007 World Championships in Athletics. However, she missed out on the squad and instead had to make do with an appearance at the 2007 IAAF World Road Running Championships in Udine (where she was 24th).
An attempt to gain an Olympic place at the Rome City Marathon failed after she dropped out of the race. On her debut Olympic appearance at the 2008 Beijing Olympics Marathon she came 29th with a time of 2:33:31 hours.
She competed in a number of half marathons in 2009, winning the Valli e Pinete Half Marathon and the Maratonina di Cremona, as well as having a top five finish at the Stramilano.