Tackle tough obstacle courses and prepare to transform into a mud monster - we've shortlisted autumn's most adrenaline-fuelled adventure races.
The Beast 5 (Leicestershire, September 19)
With 33 obstacles usually designed for horses, this is a trail race with a difference. Canter along one five-mile lap or push yourself to a double ten mile challenge as you clamber and climb over high fences and hills, along muddy trails and with a few watery moments to boot. After a fierce gallop you can relax with a well-earned complimentary Beast beer and treat tired legs to a free sports massage. Enter online now.
In a quiet corner of the Peak District there lies a grueling obstacle course just waiting for hundreds of runners to unleash their inner Neanderthal. Slide through the menacingly-named Swamp of Doom, tackle scramble nets and fly through the air on rope swings in this adrenaline fuelled cross country 10k or 5k. Enter as a team and keep all the family amused at the bustling event village with its bouncy castle and climbing wall. The only thing that won't quicken your pulse rate is the bargain price tag with includes chip timing, a technical T-shirt and a goody bag. Enter online now.
Bring all the family along for this adventure deep in the heart of Wendover Woods. After a briefing for the team captain, the race is on to reach as many checkpoints as you can within 2 hours and 30 minutes. Each team must contain one adult and one child and there's a maximum team size of four. With goodie bags all round everyone's a winner - not that that should stop you from attempting to lead your merry crew to points-based glory and the all-important winner's prize. Combine great trail racing with quality family time on this fun weekend jaunt. Enter online now.
Race past some of the nation's most terrifying rides in this epic new fun run around Alton Towers. All those maddening crowds will be safely at home and you can enjoy having the theme park to yourself as you sweep past iconic rides including Air and Nemesis in this single lap 5k. Expect a festival atmosphere as the night sky is illuminated with the sea of free glow in the dark bracelets. Plus with a ride on the new Sonic Spinball, T-shirt and goody bag included, you can indulge your inner child and raise money for sight charity Focus Birmingham all at the same time. Enter online now.
Find two fearless teammates and you could take part in the ultimate trail adventure. Cover 10k of testing trails, then its time to jump onto your mountain bike for a grueling 25k cycle before a final kayak along flat water. Just remember to save some energy for their infamous Slippery Wall - the only fiendish obstacle standing between you and the finish line. You don't need any orienteering skills or a bike (you can hire one) but you will need enthusiasm and determination. Once you've got this monster twenty-mile challenge under your belt, you can collect the all-important goody bag and T-shirt. Enter online now.
Think you can handle this ultimate off-road test designed by the British Military Fitness team? Expect a fast and furious slalom of recklessly steep hills, tough rope assisted climbs and ditches waist deep with mud. Kiss PBs goodbye but with more new obstacles this year and camaraderie strong enough to rival our boys in khaki, you won't be watching the clock anyway. Choose between the 5k option or tap into your inner warrior with the tough 10k course. Victorious finishers can accept their medal and T-shirt with pride and treat what remains of their mud-splattered limbs to a well-earned massage. Enter online now.