Triathlons are a great way to keep active as they're a multi-discipline sport comprising of swimming, cycling and running. Distances vary depending on the venue but a great way to get started is to sign up for a GO TRI event. Here are just some of the triathlon, aquathon and duathon events taking place in April and May, listed in alphabetical order.

APRIL EVENTS

Bristol - GO TRI Easton Aquathlon 12 (29th April): Ideal an introduction to multi sports but also for those wanting to improve their skills. There are 3 distances to choose from 300m/2km, 500m/5km and 500m/8km. GO TRI Sri Chinmoy Swim-Run (29th April): Swim 200m and run 3km. Devon - GO TRI Torbay (22nd April): One for absolute beginners with a 300m swim (where you can stop as often as you like), a flat bike course of 7.5km with a 2.5km parkland run to finish. Aquathlon Series - Race 3 (29th April): Exeter Triathlon Club - Aquathlon (Swim > Run) Series - Event 3. Novice Race - 300m swim, 2.5km run. Sprint Race - 600m swim, 5km run. Kent - GO TRI Herne Bay (28th April): Suitable for beginners and intermediates. Consists of a 200m swim, 6km bike and 2k run.

Lancashire - Ribby Hall Triathlon (15th April): A flat, fast triathlon on quiet lanes and around the village, one of the lowest cost triathlons in the UK. Salt Ayre Junior Duathlon (15th April): A duathlon for Juniors organised and hosted by City of Lancaster Triathlon as part of the NW Junior Series. Lincolnshire - GO TRI Grantham # 1 (21st April): An aquathon suitable for age 8 and upwards. Consists of a 50m to 200m swim and a run of between 600m and 3km. GO TRI Aquathlon Scunthorpe (22nd April): A new aquathlon with a 200m swim and a 2km run - longer distance for over 16's of a 400m swim and a 4km run.

London - GO TRI Velo Park Duathlon (17th April): A duathlon in the Velo Park in Queen Elizabeth II Park in Stratford - home of the London 2012 Olympic Games. Hampshire - GO TRI Royal Victoria Country Park Duathlon (15th April): This duathlon consists of a 2km run, 9km bike and 2km run. It's designed for those looking to give multi sport a go for the first time. Reading - GO TRI The Oratory (15th April): This aquathon (swim and a run) is a relaxed introduction into multi discipline sport with various distances on offer. The event is held in the school grounds, using the school pool and playing fields (a mix of grass, tarmac and path). Suffolk - St Eds Tri - the Greene & Greene Triathlon Festival (29th April): Bury St Edmunds triathlon featuring an aquathon, triathlon and duathlon. Races distances start from aged 8 up to adults.

Surrey - GO TRI at the Arena supported by Specsavers (22nd April): The ideal challenge for beginners with a 200m swim, 8k bike and 2km run. Sussex - Crowborough Triathlon and Duathlon (29th April): Standard, Sprint and Supersprint event with 'snake swim' style, cycle on wide main roads and country roads through the Ashdown Forest with a lapping run course to follow. GO TRI Chichester Westgate Ladies Only Triathlon (29th April): Ideal for anyone who wants to have a go at a triathlon over a short distance, in a non-competitive and supportive environment. Worcestershire - GO TRI Redditch Super Sprint Triathlon (22nd April): This event is 400m in the pool, an 11k bike ride and a 2.5k multi-terrain run. Yorkshire - Epworth Early Sprint Triathlon (15th April): With a 400m pool swim, 20km bike and 5km run, this event is ideal for your first triathlon and run by triathletes. The GO TRI Temple Newsam (15th April) consists of a 1.9k run, 5k bike and 1.9k run. Part of the course is off road so a mountain or hybrid bike is necessary. GO TRI Morley (21st April): Open to anyone over 15, this event includes a 200m swim, 5km bike (on spin bike) and 2km run. GO TRI Doncaster (28th April): Great for novice adults and juniors over 9 with the duathlon (2.5km run, 6km bike, 2.5km or the short course is 1km run, 2km bike, 400m run).

MAY EVENTS

Bristol - Sri Chinmoy Somerset Try-a-Tri & Sprint Triathlon (27th May): Tailor-made for beginners, there are manageable distances with the combination of a pool swim and a flat run course. Cotswolds - Cotswolds Lake 62 Novice Events (20th May): Options include a triathlon (400m swim, 14km bike and 3km run), aquabike or aquathon (400m swim, 4.5km run). The swim takes place in a lake. County Durham - GO TRI Darlington Aquathlon (15th May): Ideal for novices and for those who are completely new to triathlon - swim 200m and run 2km. Cumbria - GO TRI Whinlatter Forest Duathlon Series (13th May): Two routes to choose from. Beginner is 1.5km trail run, 5km off-road bike (forest road) and 1.5km trail run with intermediate 4km trail run, 10km off-road bike and 2.5km trail run. Junior race (12-14 years) 1.5km trail run, 5km off road bike and 500m trail run.

Hampshire - GO TRI Holly Hill (1st May): Swim 12 lengths in a new 25m pool before heading off to do a 3km run or walk. New Forest Triathlon (6th May): A 1.1km lake swim & 1km transition run; 33km cycle on road through the New Forest National Park; 9km run - mainly traffic free on New Forest Trails.
Plus Novice version of the event with a shortened swim of 400m & run of 5km and new duathlon event 5km/33km/5km. GO TRI Bayside Tri Aquathlon (25th May): The pool location provides a safe environment in which you can breaststroke/front crawl 300m and there's a 3km run (2 x 1.5km loops). Kent - GO TRI Maidstone (16th May): The emphasis is on enjoyment and completion rather than "racing". The 300m swim and 7k bike sections will be timed and you will have time to change in-between. GO TRI Whitstable (19th May): A 200m pool swim, an almost completely flat 5km cycle and a flat 2km run along the seafront.

Lancashire - St Anne's Triathlon (20th May): Fast sprint triathlon on quiet country lanes and around the St Annes Promenade. Ideal for first timers or those wanting an early season PB. GO TRI St Helens - 3 (26th May): A 200m pool swim, 5km cycle and 2km run outdoors. Lincolnshire - Grantham Sprint Triathlon (13th May): Sprint triathlon for beginners to experienced triathletes - 400m pool swim, 18km bike and 5km run.

Nottinghamshire - GO TRI Colwick Park Aquathlon (26th May): There are two events at Colwick Park, the aquathlon (200m swim, 1.4km run) and the GO TRI challenger aquathlon (750m swim, 4.2km run). Staffordshire - GO TRI Triathlon Rugeley (13th May): Over 16's only. Comprises of 250m swim; 7.5 km bike on local roads and 2.4 km run on grass and paths. Surrey - GO TRI Woking race 2 (6th May): Great for beginners and those looking to get more practice. Pool in the Park is the venue for the 200m swim with a short run and lapped run course to follow. Sussex - Steyning Triathlon (6th May): Pool based triathlon in South Downs National Park with 800m swim, 39km cycle and 8km run. Relay and sprint distances also available. East Ginstead Sprint Tri (13th May): Sprint Triathlon, Ladies Tri-a-Tri and Youths and Juniors Super Sprint Triathlon.

Wales - GO TRI Aneurin Leisure Aquathlon (6th May): An event for beginners with a 400m pool swim and a 5km flat course through the valleys of South Wales. West Midlands - GO TRI Warley WASPS Open Water Aquathlon (14th May): A 400m open water swim, followed by a 3km run on multi terrain/canal towpaths which is very flat. Yorkshire - GO TRI Fearnville 3 (17th May): Two races on offer, one for adults (15+) and one for juniors (10-14). The open adult race will include a 100 metre swim, a 3.6km bike and a 1km run whereas the junior race will include a 50 metre swim, a 1.2km bike and a 500 metre run. GO TRI Skipton (20th May): A 200m pool swim followed by a 9km bike route finishing with a 2.5km run. GO TRI Rothwell 3 (26th May): There are two races on the day, the open adult race (15+) and the junior race (10-14). The open adult race will include a 200 metre swim, a 5km bike and a 3km run. The junior race is a 50 metre swim, a 3km bike and a 1km run.

For more triathlon, duathlon and aquathon events, at all levels from beginner to elite, visit British Triathlon. If you're looking for a training guide, check out these tips from Rick Kiddle who was one of the first ever triathletes in Britain. There's a training plan along with advice on goals, kit (including Zoggs Predator Flex goggles) and diet.