The current world record of 7:41:33 was set by Andreas Raelert at Challenge Roth in 2011. 

“The event in Roth is a European triathlon legend and racing at Challenge Roth is a highlight in every athlete’s career,” he says.

“It’s well known that the course is very fast, and i’ll do everything to ensure my dream of the world record becomes a reality.”

Event organiser, Felix Walchshöfer, says:  “I am absolutely thrilled. For us it is a huge joy and also an honour to have the world’s best triathletes race with us. The eyes of the triathlon world will be on DATEV Challenge Roth in 2016 and perhaps we will see triathlon history written once again.” 

DATEV Challenge Roth, in Germany, takes place on 17 July

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Read Jan Frodeno’s 10 top tips for stepping up to iron distance

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Here are 5 reasons why you should book your place on the start line:

1) Follow in the footsteps of the pro’s – no other event offers you the opportunity to compete on the same course as the world’s best, including home heroes Alistair and Jonny Brownlee who will be competing in their last event on home soil before the Rio 2016 Olympic Games

2) Feel the roar of the crowds – following in the footsteps of the unforgettable 2014 Tour de France Grand Départ in Leeds and Yorkshire, this event is hoping to attract thousands of spectators to watch both the amateurs and the professionals

3) A truly unique course – starting in the stunning Roundhay Park and finishing in the heart of the City centre, the ‘point-to-point’ course complete with split transitions is as unique as it is challenging

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4) The thrilling pro races – stick around after your race and soak up the electric atmosphere as the world’s greatest triathletes fly around the same course you just conquered

 5) The city of Leeds – You’ll be guaranteed a warm welcome in Leeds, with friendly residents and a fantastically cosmopolitan atmosphere. The city’s brilliant selection of eclectic shops, independent bars and rave review restaurants mean you’ll definitely experience something new and unique

To enter now with £10 off, simply click on the ‘Enter Now’ button below and enter code word WORLDTRILEEDS on the payment page.

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See you in Leeds!

“Current bicycle helmets offer protection to the skull and the brain by dissipating energy through fracture of the helmets in some collisions, but that may be their only energy dissipating mechanism,” said Ellen Arruda, professor of mechanical engineering and biomedical engineering.

 “The composite technology we developed can be used to better protect the brain in collisions in which the helmet doesn’t fracture, without sacrificing their existing energy dissipating mechanism. We believe this technology can be used to better protect the brain in all types of helmets.”

When a bike helmet breaks, it’s absorbing what’s called “impulse” – a secondary effect of an initial force. Impulse, which gives objects momentum, is what transmits kinetic energy through a system. It takes into account not just force, but also how long that force was applied. To calculate impulse, you multiply the average force by the length of time it was exerted on the subject.

For head protection to be most effective researchers say it has to block impulse.

 “Everyone is focused on the force of an impact and only the force,” Arruda said. “But they’ve found that when they measure peak force on the surface of the skull, they can’t correlate that with brain injury. The reason is that force is only part of the story.”

Scientists and doctors don’t fully understand how a blow to the head translates to brain injury, but the U-M researchers say impulse is a big factor. Arruda and her colleagues have demonstrated this.

They’ve taken one of the first close looks at the mechanical features of impacts and blasts and how helmets and other armor might be designed to do a better job protecting sensitive structures. To do that, they built two-dimensional mock cross-sections of materials that stood in for the brain and skull in various helmet shells. Then they use a table-top collision simulator to test the different samples. They compared how much energy was transmitted through to the brain-type layer in their own helmet system and the status quo. They used a high-speed camera to help them observe how the brain model deformed in both systems

In their experiments, the conventional football helmet model did little to block impulse, however their prototype reduced impulse to just 20% of what got through to the brain model in the conventional helmet.

The prototype helmet is made up of three materials; the first layer is similar to the hard polycarbonate that’s the shell of present-day helmets. The second is a flexible plastic and the third, ‘visco-elastic’, layer has the consistency of dried tar. 

“Together these substances reflect most of the initial shock wave from a collision – most of the initial force. They also do something else unique and important: They convert the frequency of that incoming pressure wave to a frequency that the next layer can, in essence, grab ahold of and dissipate by vibrating. This third ‘visco-elastic’ layer has the consistency of dried tar.”

 “We’ve come up with a totally new concept of how to make efficient impact-mitigating structures that could dissipate energy without being damaged,”said Michael Thouless, the Janine Johnson Weins Professor of Engineering in mechanical engineering and materials science and engineering.

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“And we used basic concepts of mechanics to develop a fundamental understanding of how to protect delicate structures such as the brain.”

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Junior and short distance races will be held on 13 August will host junior and short distance races, while the Challenge Turku Half Distance race will take place on Sunday 14 August.

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“We now have a really strong presence in Scandinavia with races in Finland, Iceland, Norway and Denmark,” said Challenge Family CEO Zibi Szlufcik.

“Turku’s rich cultural history and astonishing natural beauty makes it a great place to race and holiday and we’re excited to have Challenge Turku as part of the Challenge Family.”

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For further information, please visit www.challengeturku.com

Having completed triathlons in Belfast, Cardiff, Glasgow and Sheffield Greg pleased the crowds with a twirl at the finish at BBC Norwich. Greg endured some agonizing recovery sessions and ice baths alongside his endurance efforts, but was rewarded by amazing support from both the public and some familiar faces. Fellow Radio One DJ Nick Grimshaw and Example turned out to support Greg for his run through Sheffield. Bailey Matthews, recent winner of The Pride of Britain and Helen Rollason Award, also joined them in assisting Greg to cross the finish line.

Greg’s efforts were closely followed on Twitter and Instagram, with some amusing physio photos accompanying well wishes from Danny Dyer, Geoffrey Boycott and Craig David. Check out our 6 favourites below!

Check out his earlier efforts!

 

Done. For now. Bring on Belfast on Monday! #Gregathlon

A photo posted by Greg James (@gregjames17) on Feb 3, 2016 at 3:09am PST

 

Was genuinely scary this morning. A bit ‘touch and go’ as my mum would say but I overcame it thanks to your messages and support and generosity. Over £200,000 already only after days. Insane. #Gregathlon

A photo posted by Greg James (@gregjames17) on Feb 10, 2016 at 8:32am PST

 

Not an ideal start to the Sheffield cycle. My minnnnndds telling me yes, but my body, my body’s telling me NO. #Gregathlon Need your help to dig deep. Text GREG to 70703 to give £3 to @sportrelief Thank you X

A photo posted by Greg James (@gregjames17) on Feb 11, 2016 at 1:13am PST

 

Water couple of lads. @example joined me for a swim in Sheffield. The total is staggering – too tired to even comprehend how generous you all are. £380,338!

A photo posted by Greg James (@gregjames17) on Feb 11, 2016 at 8:27am PST

 

HALF A MILLION! ARE YOU JOKING?! Now for a 46 mile bike ride round Norfolk. Final day. BIG PUSH! LETS GO! #Gregathlon

A photo posted by Greg James (@gregjames17) on Feb 12, 2016 at 2:05am PST

 

5 triathlons. 5 days. 5 cities. DONE. Total so far…£816,808. Thank you everyone, so so much. Insane. X #Gregathlon

A photo posted by Greg James (@gregjames17) on Feb 12, 2016 at 12:41pm PST

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You can also help raise more money for  Sport Relief by purchasing some of the official merchandise, including one of the t-shirts, as seen on Greg James below (£10 with at least £5 going to Sport Relief, available from Sainsbury’s and sportrelief.com), and wristbands (£1 with at least 50p going to Sport Relief, available from Sainsbury’s, Oxfam and sportrelief.com).

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It starts in the shadow of Mont Orgueil castle and sights along the route include spectacular clifftops, gentle beaches, Neolithic tombs, round towers, Martello forts and German WW2 fortifications.  

Breca Jersey will have nine incredible ocean swims across the island’s iconic bays, and teams will be racing counter-clockwise around the island in a battle against Jersey’s relentless 40ft tides.

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Entries are limited to 100 teams of two. Registration is now live – sign up here.

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Athletes who have already won a medal at the 2014 and 2015 ITU Paratriathlon World Championships, and win a gold at WPE Buffalo City, WPE Yokohama or WPE Aguilas this year, will meet the automatic selection criteria.

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As with the Olympic selection policy, which many considered to be particularly tough compared to other nations, the Paralympic policy “is about ensuring we send a very strong team that is capable of delivering medal winning performances,” said a spokesman for British Triathlon.

“Brendan Purcell is the National Performance Director for both the elite and paratriathlon squads, so his input means there are some similarities between the two policies. Like the Olympic nomination policy, athletes who have a proven track record of winning medals at the highest level are able to secure automatic selection earlier than the rest of the team.”

So far out of the ParalympicsGB hopefuls, just Lauren Steadman (gold medallist at the 2014 and 2015 World Champs in PT4) and Alison Patrick (gold medallist in 2014, silver medallist in 2015 in PT5) have met the first part of the automatic selection criteria.   

Those who haven’t met the criteria for automatic selection, will be considered on their performances at the major championships during 2015/16 and the ITU World Paratriathlon Event Series up until June 2016. 

The final team will be announced by ParalympicsGB in July after selectors have also taken into consideration an athlete’s form, race times and whether their performance profile suits the Rio 2016 Paralympic course.

Paralympic hopeful Phil Hogg says: “This would be the highlight of my sporting career to date. To compete for your country at the highest level is a honour and privilege that doesn’t come easy.  

“The commitment and dedication over the last four years to throw everything I have towards my dream as at times been very difficult but equally rewarding too. 

“It goes without saying that the support I’ve received not only from all the coaching staff and other practitioner at British Triathlon but from my family, friends and the close community at home where I live. Not to mention my team mates too. I see all these people as ‘Team Hogg’ “

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To get an idea of the training required to make the Rio startline, pick up the May issue of 220, on sale 29 March, as we gain exclusive access to the GB paratri squad on camp in Lanzarote, or subscribe to the magazine here 

“I don’t think the win has sunk in yet,” said Weiss.  “It’s been approximately five years since I started taking part in Xterra Grabouw.  I started out in the Xterra Lite, and if I think back to then, I would never have dreamt about winning at the Xterra SA Champs.  It’s such a surreal feeling.  I couldn’t be more proud.” 

This is two-time Exterra World Champion Duffy‘s third straight SA title, her ninth consecutive Xterra major and her 13th win, out of 16, on the Xterra World Tour since 2013. She dominated from the onset and had the fastest swim, fastest bike by nearly seven-minutes and fastest run by four

 “Getting my third victory in Grabouw is really cool,” says Duffy.  “I won my very first Xterra here.  As I spend five months out of the year in South Africa, Grabouw is an unofficial home race for me.  The Grabouw course is phenomenal.  It’s a true Xterra course.  You have to know how to ride a mountain bike. ” 

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Here’s some of our favourite images from the event;

 

Thanks @xterrasa for the great event! All time favorite. Happy to start the season off with a win on the dirt. #noshortcuts #xterra #liveyours #luckynumberthree

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Last year proved nail-biting, as the men kicked off the season in style by taking it down to the climax of the run. Mario Mola sealed his second series title, and with half of the top 10 men heralding from the Iberian Peninsula, many eyes this year will be on the lads from Spain. Check out some top pics of last years event.

Gwen Jorgenson unleashed a dominating run to end victorious in the women’s race, and the field looks to be equally tough for the Brits his year.

The Great Britain contingent include Tom Bishop and Adam Bowden in the mens and Helen Jenkins and Jodie Stimpson for the women’s race.

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Over the coming seven months, the series is set to travel across nine venues, spanning five continents, before culminating in the ITU World Triathlon Grand Final in Cozumel.

Thinking of competing somewhere hot yourself? Check out Andy Bullock’s tips for coping with the heat