But investors are still cautious, not least following Wall Street's fall overnight in the wake of the Boston marathon explosions.
One depression sufferer, John Lake, told me recently that he had done the London marathon and triathlon.
The call comes just days after Boston marathon bomber Dzhokar Tsarnaev was sentenced to death in the US for his role in the 2013 terrorist attack that killed three people and wounded 260.
On the day of the Boston marathon, he wrote in his column in yesterday's Sunday Times, 65 Iraqis were murdered by terrorist bombs.
Related: London Marathon 2015: fundraising tips Don't be afraid to ask questions.
In the next four months alone they're taking part in a relay marathon in Redbridge (east London), a relay from Birmingham to London, attempting to notch up yet more records at the Norway KnarvikMila where times are age-weighted, and they are joining a British team with a total age of 1,000 years at the Toronto Waterfront marathon to challenge a team of Canadian elders over a 5km course.
Just days before, he completed both the Luxemburg Interfaith marathon and the Edinburgh marathon as part of the relay team Sikhs in the City - a team of four Sikh elders with a combined age of 336.
The pay-off is spectacular Lake District scenery and the accolade of completing England's newest and highest marathon.
At 92, Harriette Thompson has become the oldest woman to run a marathon after completing the Rock'n'Roll marathon in San Diego in 7hr 24min.
David Cameron ended a marathon 36-hour eve-of-election tour across Britain by offering a promise and a warning to the British people as they go to the polls in an election he says "will define this generation".
Kiev and pro-Russia rebels agreed a peace roadmap on 12 February after marathon negotiations in Minsk involving the leaders of France, Germany, Russia and Ukraine.
