"Today's sentencing is sure to have a ripple effect across the nation, and hopefully the region at large," said lawyer Kimberly Brown, from the campaign group Equality Now, which supported the schoolgirl.
Worldwide outrage over the punishment prompted more than 1.8 million people to sign an online petition demanding justice.
The then 16-year-old victim, known by the pseudonym Liz, was reportedly attacked, beaten and then raped by six men as she returned from her grandfather's funeral in western Kenya in June 2013.
She suffered a broken back, caused either by the beating or by being hurled down into the pit, as well as serious internal injuries from the rape.
"The fact that Liz's case took so long to reach this point -- and still faced serious obstacles despite strong national and global support -- illustrates the injustices that are still suffered by survivors," Brown added.
"While Kenya boasts one of the most progressive legal and policy frameworks for addressing sexual violence, Liz's case and countless others have revealed significant failures of local authorities to adequately address sexual violence."
Other suspects are on the run, with the public prosecutor ordering they be "apprehended and brought to justice without further delay", although it has been a more than a year since arrest warrants were issued.
Sentencing had been set for last Friday but was delayed after one of the men skipped bail and failed to turn up, but police arrested him over the weekend.
Rape is a serious problem in Kenya but is seldom taken seriously by the police, rights groups say.
At the time, then police chief David Kimaiyo cast doubt on Liz's testimony, saying the time between her screams for help and villagers coming to her rescue was "too short for six assailants to have gang raped.
One study in 2013 suggested as many as 19 in every 20 rapes are not reported to the police, with victims reluctant to enter a process many feel will not lead to justice.
"Negative cultural attitudes towards women, as well as the fear and stigma associated with such crimes, make reporting of cases a daunting and often impossible task," Brown added.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
