Half marathon

A half marathon is a road running event of 21.0975 kilometres (13.1094 mi). It is half the distance of a marathon and usually run on roads. Participation in half marathons has grown steadily. One of the main reasons for this is that it is a challenging distance, but does not require the same level of training that a marathon does. In 2008, Running USA reported that the half marathon is the fastest growing type of race. A 2010 article by Universal Sports echoed the growing popularity of the distance. It is common for a half marathon event to be held concurrently with a marathon, using almost the same course with a late start, an early finish or shortcuts. The half marathon is also known as a 21K, 21.1K or 13.1 miles, although these values are rounded and not formally correct.

World record progression

World records in the half marathon are ratified by the International Association of Athletics Federations, the international governing body for the sport of athletics.

The official IAAF world record for men is 58:23, set by Zersenay Tadese of Eritrea on March 21, 2010 at the Lisbon half marathon in Portugal, and for women is 1:05:09, set by Florence Kiplagat of Kenya on February 15, 2015, in Barcelona, Spain.

CyanogenMod

CyanogenMod (pronounced /saɪ.ˈæn.oʊ.ˌdʒɛn.mɒd/ or sigh-ah-no-gen-mod), usually abbreviated to CM, is an open-source operating system for smartphones and tablet computers, based on the Android mobile platform. It is developed as free and open source software based on the official releases of Android by Google, with added original and third-party code. It is based on a rolling release development model.

CyanogenMod offers features and options not found in the official firmware distributed by mobile device vendors. Features supported by CyanogenMod include native theming support,FLAC audio codec support, a large Access Point Name list, an OpenVPN client, Privacy Guard (per-application permission management application), support for tethering over common interfaces, CPU overclocking and other performance enhancements, unlockable bootloader and root access, soft buttons and other "tablet tweaks", toggles in the notification pull-down (such as Wi-Fi, Bluetooth and GPS), and other interface enhancements. CyanogenMod does not contain spyware or bloatware, according to its developers. CyanogenMod is also said to increase performance and reliability compared with official firmware releases.

OnePlus One

The OnePlus One (also abbreviated to OPO) is an Android smartphone manufactured by OnePlus, a Chinese startup company co-founded by former Oppo vice president Pete Lau. Unveiled in April 2014, it is the first product by OnePlus. The One was designed to compare favorably – in performance, quality, and price – to flagship devices by leading smartphone manufacturers. The One ships to most markets with a commercial variant of the CyanogenMod operating system pre-installed.

The phone was first made available for sale on 25 April 2014, exclusively from the OnePlus website, but previously required prospective customers to obtain an invitation before they could purchase it. These invitations were primarily distributed by the company through contests, some of which attracted attention for their unconventional or controversial nature. On 6 June 2014, the device was available for general sale.

As of 20 April 2015, the device no longer requires an invite to purchase.

Development