Ciara Mageean's 2020 season got underway with a national indoor 1500-metre record in Boston at the Indoor Grand Prix.

The Down runner broke her own record with a run of 4:06.42, which was good enough for third place behind Australia's Jessica Hull and Konstanze Klosterhalfen of Germany, who ran 4:04.14 and 4:04.38 respectively.

Speaking afterwards, Mageean, fresh off an altitude training camp in New Mexico, expressed her delight with her seasonal bow.

"Starting my season with a 4:06 indoors! I would have taken that with any outdoor season, so I am over the moon," said the 27-year-old.

With her focus trained on Tokyo, Mageean is not running the World Indoor Championships this year, but will run again in Athlone, Madrid and the Irish championships in February before switching the focus to outdoors. 

"Big year ahead, everything geared towards the Olympics," said Mageean. "I am feeling very strong and this is the best shape I have ever been in in January, which is great in an Olympic year."