Staged over the course of January and February, the series includes stops in Karlsruhe on February 2, Torun on February 6, Madrid on February 8 and Birmingham  on February 16 before reaching its final destination Düsseldorf on February 20 where the series winners will be crowned.

This is the fourth edition of this Tour and it appears to be gaining in popularity. 

The events in Karlsruhe, Birmingham and Dusseldorf have sold out well in advance, the Polish meeting is on target to host yet another sell-out crowd of 5,200 at Torun Arena and Madrid is set for a near-capacity crowd.

A total of 11 disciplines will be contested during the Tour with the overall winners receiving $20,000 (£15,000/€17,500) in prize money and a wildcard entry into next year's IAAF World Indoor Championships in Nanjing.

Greece's Olympic pole vault champion Katerina Stefanidi is among the leading names taking part in the New Balance Indoor Grand Prix at the Reggie Lewis Track and Athletic Center in Boston. 

Germany's 2015 world shot put champion Christina Schwanitz is another high-quality entry. 

Ethiopia's Yomif Kejelcha, winner of the 3,000 metres at the 2016 and 2018 IAAF World Indoor Championships, is due to compete in the men's mile in Boston against a field that includes New Zealand's Nick Willis, an Olympic silver and bronze medallist in the 1500m at Beijing 2008 and Rio 2016. 

Also scheduled to compete is Sydney McLaughlin, who reached the semi-finals of the 400m hurdles at the 2016 Olympic Games in Rio de Janeiro as a high school junior, the youngest American track and field Olympian in 36 years.

McLaughlin, given the IAAF Female Rising Star Award last year after setting a world junior record in the 400m hurdles of 52.75sec, is set to run in the 500m tomorrow.

Now in its 24th year, the New Balance Indoor Grand Prix has played host to nine world records and 13 American records.