Fill a shaker with ice. Add the rum, blackberry liqueur, lime juice, orange juice, and pineapple juice. Shake vigorously until the shaker is very cold.
Pour the drink into a Collins glass filled with ice.
Slowly pour the grenadine over the back of a spoon so it floats on top of the drink.
Garnish with a pineapple wedge and maraschino cherry.
Interesting Facts
The Rum Runner is believed to have originated in the 1950s at the Holiday Isle Tiki Bar in Islamorada, Florida.
The Rum Runner is often mistaken for the Zombie, a similarly fruity cocktail.
The Rum Runner is one of the most popular tropical drinks.