Motivating Trainers. Structured Workouts. Guaranteed Results. Ultimate Bootcamp provides fun, motivating outdoor workout programs to adults in Greater Boston & MetroWest Massachusetts. Our popular 4-week fitness programs have been scientifically proven to help reach your goals FASTER! Whether you want to lose weight, tone muscle or increase your sports performance, the personable Fitness Trainers at Ultimate Bootcamp will give you a personalized experience that gets you results....guaranteed.