But every November, on certain days, Carta exchanges his white lab coat for a maroon Manchester Road Race coat, or, depending on the event, a tie imprinted with little winged feet — the Manchester Road Race logo — and turns into the president of the road race. Tris Carta is a mild-mannered dentist. But every November, on certain days, Carta exchanges his white lab coat for a maroon Manchester Road Race coat, or, depending on the event, a tie imprinted with little winged feet — the Manchester Road Race logo — and turns into the president of the road race. See more videos Tris Carta is a mild-mannered dentist. But every November, on certain days, Carta exchanges his white lab coat for a maroon Manchester Road Race coat, or, depending on the event, a tie imprinted with little winged feet — the Manchester Road Race logo — and turns into the president of the road race.