Exhibit 99.1

Contacts:

Investor Relations: John Heller, 952-229-7427, ir@lifetimefitness.com

Media Relations: Jason Thunstrom, 952-229-7435, pr@lifetimefitness.com

FOR IMMEDIATE RELEASE

LIFE TIME FITNESS ANNOUNCES THIRD QUARTER 2013 FINANCIAL RESULTS

Revenue Grew 7.2%, Net Income Grew 7.0% and Diluted EPS was $0.83

CHANHASSEN, Minn. (October 24, 2013) –Life Time Fitness, Inc. (NYSE: LTM), The Healthy Way of Life Company, today reported its financial results for the third quarter ended September 30, 2013.

Third quarter 2013 revenue grew 7.2% to $316.0 million from $294.9 million during the same period last year. Revenue for the first nine months of 2013 grew 7.4% to $914.9 million from $851.6 million during the same period last year.

Net income for the quarter was $34.4 million, or $0.83 per diluted share, compared to net income of $32.1 million, or $0.77 per diluted share, for 3Q 2012. Net income for the first nine months of 2013 was $95.7 million, or $2.30 per diluted share, compared to net income of $88.1 million, or $2.10 per diluted share for the prior-year period.

“Our focus in 2013 continues to be upon improving the operational execution and consistency with which we deliver our broad range of programs, services and products in health, fitness and nutrition,” said Bahram Akradi, chairman, president and chief executive officer. “At the same time, our unwavering efforts to establish Life Time as the definitive Healthy Way of Life Company and brand are taking hold as communities, organizations and individuals alike select our offerings. As we look toward the acceleration of our new center expansion in 2014, we are well positioned to provide even more value to our customers.”

During the quarter, the Company opened its fourth center in Virginia, located in Reston (Washington D.C. market). The Company’s final planned 2013 new center opening will occur in November in Montvale, New Jersey (Greater New York market), representing the third Life Time location in New Jersey. In 2014, plans call for six new center openings in existing and new markets.

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Life Time Announces Third Quarter 2013 Results – Page 2

Three and Nine Months Ended September 30, 2013, Financial Highlights:

Total revenue for the third quarter grew 7.2% to $316.0 million from $294.9 million in 3Q 2012. Total revenue for the first nine months of 2013 grew 7.4% to $914.9 million from $851.6 million during the prior-year period.

Total memberships grew 0.7% to 801,851 at September 30, 2013, from 796,102 at September 30, 2012.

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Life Time Announces Third Quarter 2013 Results – Page 3

Total operating expenses during 3Q 2013 were $253.2 million compared to $235.5 million for 3Q 2012. Total operating expenses for the first nine months of 2013 were $738.9 million compared to $687.3 million in 2012.

Net income for 3Q 2013 was $34.4 million, or $0.83 per diluted share, compared to net income of $32.1 million, or $0.77 per diluted share, for 3Q 2012. Net income for the first nine months of 2013 was $95.7 million, or $2.30 per diluted share, compared to net income of $88.1 million, or $2.10 per diluted share, for the prior-year period.

EBITDA for 3Q 2013 was $93.2 million compared to $89.2 million in 3Q 2012. For the first nine months of 2013, EBITDA was $266.3 million compared with $250.7 million in the prior-year period.

Cash flows from operating activities for the first nine months of 2013 totaled $190.8 million compared to $202.9 million in the prior-year period. This reduction is driven primarily by changes in operating assets and liabilities.

Weighted average fully diluted shares for 3Q 2013 totaled 41.6 million compared to 41.9 million in 3Q 2012. For the first nine months of 2013, weighted average fully diluted shares totaled 41.6 million compared to 41.9 million for the prior-year period.

2013 Business Outlook:

The following statements are based on the Company’s current expectations for fiscal year 2013 and incorporate 2013 operating trends. These 2013 expectations are subject to the risks and uncertainties further described in the Company’s forward-looking statements:

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Life Time Announces Third Quarter 2013 Results – Page 4

As announced on October 17, 2013, the Company will hold a conference call today at 10:00 a.m. ET to discuss its third quarter 2013 results. Bahram Akradi, Michael Robinson, executive vice president and chief financial officer, and John Heller, vice president, Finance and Investor Relations, will host the conference call. The conference call will be webcast and may be accessed via the Company’s Investor Relations section of its website at lifetimefitness.com. A replay of the call will be available the same day via the Company’s website beginning at approximately 2:00 p.m. ET.

About Life Time Fitness, Inc.

As The Healthy Way of Life Company, Life Time Fitness (NYSE:LTM) helps organizations, communities and individuals achieve their total health objectives, athletic aspirations and fitness goals by engaging in their areas of interest — or discovering new passions — both inside and outside of Life Time’s distinctive and large sports, professional fitness, family recreation and spa destinations, most of which operate 24 hours a day, seven days a week. The Company’s Healthy Way of Life approach enables customers to achieve this by providing the best programs, people and places of uncompromising quality and value. As of October 24, 2013, the Company operated 107 centers under the LIFE TIME FITNESS^® and LIFE TIME ATHLETIC^® brands in the United States and Canada. Additional information about Life Time centers, programs and services is available at lifetimefitness.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements can usually be identified by the use of terminology such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “evolve,” “expect,” “forecast,” “intend,” “looking ahead,” “may,” “opinion,” “plan,” “possible,” “potential,” “project,” “should,” “will” and similar words or expressions. Forward-looking statements are subject to certain risks and uncertainties that could cause the Company’s actual results in the future to differ materially from its historical results and those presently anticipated or projected. Among these factors are attracting and retaining members, risks related to our debt levels and debt covenants, the ability to access our existing credit facility and obtain additional financing, strains on our business from continued and future growth, including potential acquisitions and other strategic initiatives, risks related to maintenance and security of our data, potential recognition of compensation expense related to performance-based stock grants, competition from other health and fitness centers, identifying and acquiring suitable sites for new centers, delays in opening new centers and other factors set forth in the risk factor section of the Company’s annual report on Form 10-K filed with the Securities and Exchange Commission.

The Company cautions investors not to place undue reliance on any such forward-looking statements, which speak only as of the date on which such statements were made. The Company undertakes no obligation to update such statements to reflect events or circumstances arising after such date. All remarks made during the Company’s preliminary financial results webcast will be current at the time of the webcast and the Company is under no obligation to update the recording.

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Life Time Announces Third Quarter 2013 Results – Page 5

LIFE TIME FITNESS, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In thousands)

(Unaudited)

Life Time Announces Third Quarter 2013 Results – Page 6

LIFE TIME FITNESS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands except per share data)

(Unaudited)

Life Time Announces Third Quarter 2013 Results – Page 7

LIFE TIME FITNESS, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited)

Life Time Announces Third Quarter 2013 Results – Page 8

Non-GAAP Financial Measures

This release and the related conference call disclose certain non-GAAP financial measures.

EBITDA. Earnings Before Interest, Income Taxes and Depreciation and Amortization (EBITDA) is a non-GAAP measure consisting of net income plus interest expense, net, provision for income taxes and depreciation and amortization. This term, as the Company defines it, may not be comparable to a similarly titled measure used by other companies and is not a measure of performance presented in accordance with GAAP. The Company uses EBITDA as a measure of operating performance. The funds depicted by EBITDA are not necessarily available for discretionary use if they are reserved for particular capital purposes, to maintain compliance with debt covenants, to service debt or to pay taxes. EBITDA should not be considered as a substitute for net income, net cash provided by operating activities or other income or cash flow data prepared in accordance with GAAP. Additional details related to EBITDA are provided in the Form 8-K that the Company filed with the Securities and Exchange Commission on the date of this press release. The following table provides a reconciliation of net income, the most directly comparable GAAP measure, to EBITDA:

RECONCILIATION OF NET INCOME TO EBITDA

(In thousands)

(Unaudited)

Free Cash Flow. Free cash flow is a non-GAAP measure consisting of net cash provided by operating activities, less purchases of property and equipment, excluding acquisitions. This term, as the Company defines it, may not be comparable to a similarly titled measure used by other companies and does not represent the total increase or decrease in the cash balance presented in accordance with GAAP. The Company uses free cash flow as a measure of cash generated after spending on property and equipment. Free cash flow should not be considered as a substitute for net cash provided by operating activities prepared in accordance with GAAP. Additional details related to free cash flow are provided in the Form 8-K that the Company filed with the Securities and Exchange Commission on the date of this press release. The following table provides a reconciliation of net cash provided by operating activities, the most directly comparable GAAP measure, to free cash flow:

RECONCILIATION OF NET CASH PROVIDED BY OPERATING ACTIVITIES TO FREE CASH FLOW

(In thousands)

(Unaudited)