The 20th edition of the Semi-Marathon Boulogne-Billancourt Christian Granger will see Ethiopia’s Yitayal Atnafu defend his title at the IAAF Bronze Label Road Race tomorrow. Last year’s edition was cancelled following the horrendous series of terrorist attacks which struck Paris on 13 November 2015. Atnafu will be defending the title he won in 2014 when he ran a PB of 1:01:03….