Exhibit 99.1

MARTEN TRANSPORT ANNOUNCES SECOND QUARTER RESULTS

Marten Transport, Ltd. (Nasdaq/GS:MRTN) today reported an increase in net income to $7.9 million, or 24 cents per diluted share, in the second quarter ended June 30, 2014, from $7.7 million, or 23 cents per diluted share, in the second quarter of 2013. For the six-month period ended June 30, 2014, net income was $13.2 million, or 39 cents per diluted share, compared with $14.9 million, or 45 cents per diluted share, in the 2013 six-month period.

Operating revenue, consisting of revenue from truckload and logistics operations, increased to $168.4 million in the second quarter of 2014 from $161.4 million in the second quarter of 2013, and increased to $327.8 million in the 2014 six-month period from $325.9 million in the 2013 six-month period. Operating revenue, net of fuel surcharges and MW Logistics, LLC (MWL) revenue, increased 4.6% to $135.7 million in the 2014 quarter from $129.7 million in the 2013 quarter, and increased 2.9% to $263.2 million in the 2014 six-month period from $255.8 million in the 2013 six-month period. Fuel surcharge revenue increased to $32.7 million in the second quarter of 2014 from $31.7 million in the 2013 quarter, and increased to $64.6 million in the 2014 six-month period from $63.4 million in the 2013 six-month period. With the March 2013 deconsolidation of MWL, no MWL revenue was included in the first six months of 2014 or in the second quarter of 2013, compared with $6.7 million in the first six months of 2013.

Operating expenses as a percentage of operating revenue, with both amounts net of fuel surcharge revenue, was 90.5% in the second quarter of 2014 compared with the 89.9% ratio achieved in the second quarter of 2013. The ratio was 91.8% in the 2014 six-month period compared with 90.2% in the 2013 six-month period.

Chairman and Chief Executive Officer Randolph L. Marten said, “We remain confident that we are well positioned for the remainder of 2014 and beyond with our rate initiatives that will continue through this year’s third quarter, as the operating environment is becoming more favorable with tightening capacity. We are encouraged by our strong June 2014 performance with net income for the month of $3.1 million, and our opportunity for further profitability growth with our diverse service infrastructure. We continue to drive gains in our key operating measures as our revenue per tractor increased 4.1% over the second quarter of 2013, our seventeenth consecutive quarterly increase.”

“We also utilized our credit facility in the second quarter of 2014 to acquire a larger regional operating facility in southern California, which we believe will give us the ability to further expand our footprint in that market.”

Marten Transport, with headquarters in Mondovi, Wis., is one of the leading temperature-sensitive truckload carriers in the United States. Marten specializes in transporting and distributing food and other consumer packaged goods that require a temperature-controlled or insulated environment. Marten offers service in the United States, Canada and Mexico, concentrating on expedited movements for high-volume customers. Marten’s common stock is traded on the Nasdaq Global Select Market under the symbol MRTN.

Since 2004, Marten Transport’s results and consolidated financial statements have included the accounts of MWL, a third-party provider of logistics services to the transportation industry. On March 28, 2013, a member of MWL made a capital contribution to MWL. As a result, it was determined that MWL was no longer required to be consolidated. Accordingly, Marten deconsolidated MWL and started accounting for its ownership interest in MWL under the equity method of accounting, effective as of that date.

This press release contains certain statements that may be considered forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These statements by their nature involve substantial risks and uncertainties, and actual results may differ materially from those expressed in such forward-looking statements. Important factors known to the Company that could cause actual results to differ materially from those discussed in the forward-looking statements are discussed in Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2013. The Company undertakes no obligation to correct or update any forward-looking statements, whether as a result of new information, future events or otherwise.

CONTACTS: Tim Kohl, President, and Jim Hinnendael, Chief Financial Officer, of Marten Transport, Ltd., 715-926-4216.

MARTEN TRANSPORT, LTD.

CONSOLIDATED CONDENSED BALANCE SHEETS

(Unaudited)

	June 30,			December 31,
(In thousands, except share information)	2014			2013
ASSETS
Current assets:
Cash and cash equivalents	$	956		$	13,650
Receivables:
Trade, net		75,176			70,869
Other		6,459			4,142
Prepaid expenses and other		13,949			15,274
Deferred income taxes		3,545			3,415
Total current assets		100,085			107,350
Property and equipment:
Revenue equipment, buildings and land, office equipment and other		632,693			579,925
Accumulated depreciation		(174,627	)		(164,916	)
Net property and equipment		458,066			415,009
Other assets		3,991			3,443
TOTAL ASSETS	$	562,142		$	525,802
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable and accrued liabilities	$	42,063		$	38,624
Insurance and claims accruals		15,012			14,404
Total current liabilities		57,075			53,028
Long-term debt, less current maturities		16,757			-
Deferred income taxes		115,918			113,637
Total liabilities		189,750			166,665
Stockholders’ equity:
Preferred stock, $.01 par value per share; 2,000,000 shares authorized; no shares issued and outstanding		-			-
Common stock, $.01 par value per share; 48,000,000 shares authorized; 33,398,329 shares at June 30, 2014, and 33,301,048 shares at December 31, 2013, issued and outstanding		334			333
Additional paid-in capital		86,787			85,077
Retained earnings		285,271			273,727
Total stockholders’ equity		372,392			359,137
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	562,142		$	525,802

MARTEN TRANSPORT, LTD.

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS

(Unaudited)

	Three Months Ended June 30,						Six Months  Ended June 30,
(In thousands, except per share information)	2014			2013			2014			2013
OPERATING REVENUE	$	168,423		$	161,413		$	327,832		$	325,887
OPERATING EXPENSES (INCOME):
Salaries, wages and benefits		44,667			42,345			88,399			84,470
Purchased transportation		30,739			28,129			58,869			62,313
Fuel and fuel taxes		40,494			40,596			80,320			80,919
Supplies and maintenance		10,351			9,998			20,786			19,531
Depreciation		16,865			16,219			33,236			31,907
Operating taxes and licenses		1,728			1,825			3,441			3,595
Insurance and claims		6,663			5,808			12,788			11,619
Communications and utilities		1,311			1,262			2,744			2,545
Gain on disposition of revenue equipment		(1,278	)		(1,237	)		(1,941	)		(3,652	)
Other		3,951			3,347			7,618			6,981
Total operating expenses		155,491			148,292			306,260			300,228
OPERATING INCOME		12,932			13,121			21,572			25,659
OTHER		(612	)		(153	)		(710	)		(168	)
INCOME BEFORE INCOME TAXES		13,544			13,274			22,282			25,827
Less: Income before income taxes attributable to noncontrolling interest		-			-			-			84
INCOME BEFORE INCOME TAXES ATTRIBUTABLE TO MARTEN TRANSPORT, LTD.		13,544			13,274			22,282			25,743
PROVISION FOR INCOME TAXES		5,618			5,607			9,069			10,874
NET INCOME	$	7,926		$	7,667		$	13,213		$	14,869
BASIC EARNINGS PER COMMON SHARE	$	0.24		$	0.23		$	0.40		$	0.45
DILUTED EARNINGS PER COMMON SHARE	$	0.24		$	0.23		$	0.39		$	0.45
DIVIDENDS DECLARED PER COMMON SHARE	$	0.025		$	0.017		$	0.050		$	0.033

MARTEN TRANSPORT, LTD.

SEGMENT INFORMATION

(Unaudited)

	Three Months Ended June 30,						Dollar Change Three Months Ended June 30,			Percentage Change Three Months Ended June 30,
(Dollars in thousands)	2014			2013			2014 vs. 2013			2014 vs. 2013
Operating revenue:
Truckload revenue, net of fuel surcharge revenue	$	102,161		$	99,996		$	2,165			2.2	%
Truckload fuel surcharge revenue		26,944			26,856			88			0.3
Total Truckload revenue		129,105			126,852			2,253			1.8
Logistics revenue, net of intermodal fuel surcharge revenue		33,518			29,721			3,797			12.8
Intermodal fuel surcharge revenue		5,800			4,840			960			19.8
Total Logistics revenue		39,318			34,561			4,757			13.8
Total operating revenue	$	168,423		$	161,413		$	7,010			4.3	%
Operating income:
Truckload	$	11,843		$	11,376		$	467			4.1	%
Logistics		1,089			1,745			(656	)		(37.6	)
Total operating income	$	12,932		$	13,121		$	(189	)		(1.4	)%
Operating ratio:
Truckload		90.8	%		91.0	%
Logistics		97.2			95.0
Consolidated operating ratio		92.3	%		91.9	%

MARTEN TRANSPORT, LTD.

SEGMENT INFORMATION

(Unaudited)

	Six Months Ended June 30,						Dollar Change Six  Months Ended June 30,			Percentage Change Six  Months Ended June 30,
(Dollars in thousands)	2014			2013			2014 vs. 2013			2014 vs. 2013
Operating revenue:
Truckload revenue, net of fuel surcharge revenue	$	199,691		$	194,961		$	4,730			2.4	%
Truckload fuel surcharge revenue		53,478			53,625			(147	)		(0.3	)
Total Truckload revenue		253,169			248,586			4,583			1.8
Logistics revenue, net of intermodal fuel surcharge revenue		63,527			67,481			(3,954	)		(5.9	)
Intermodal fuel surcharge revenue		11,136			9,820			1,316			13.4
Total Logistics revenue		74,663			77,301			(2,638	)		(3.4	)
Total operating revenue	$	327,832		$	325,887		$	1,945			0.6	%
Operating income:
Truckload	$	19,343		$	21,376		$	(2,033	)		(9.5	)%
Logistics		2,229			4,283			(2,054	)		(48.0	)
Total operating income	$	21,572		$	25,659		$	(4,087	)		(15.9	)%
Operating ratio:
Truckload		92.4	%		91.4	%
Logistics		97.0			94.5
Consolidated operating ratio		93.4	%		92.1	%

MARTEN TRANSPORT, LTD.

OPERATING STATISTICS

(Unaudited)

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Truckload Segment:
Total Truckload revenue (in thousands)	$	129,105		$	126,852		$	253,169		$	248,586
Average truckload revenue, net of fuel surcharges, per tractor per week(1)	$	3,601		$	3,459		$	3,551		$	3,414
Average tractors(1)		2,183			2,224			2,175			2,209
Average miles per trip		605			598			610			612
Non-revenue miles percentage(2)		9.0	%		10.5	%		8.7	%		10.6	%
Total miles – company-employed drivers (in thousands)		56,140			57,031			110,502			111,926
Total miles – independent contractors (in thousands)		1,057			1,373			2,114			2,314
Logistics Segment:
Total Logistics revenue (in thousands)	$	39,318		$	34,561		$	74,663		$	77,301
Brokerage:
Marten Transport Revenue (in thousands)	$	13,112		$	12,813		$	24,767		$	27,282
Loads		8,611			8,602			16,319			18,032
MWL
Revenue (in thousands)	$	-		$	-		$	-		$	6,676
Loads		-			-			-			3,758
Intermodal:
Revenue (in thousands)	$	26,206		$	21,748		$	49,896		$	43,343
Loads		12,032			8,916			22,555			17,506
Average tractors		121			85			110			81
At June 30, 2014 and June 30, 2013:
Total tractors(1)		2,311			2,317
Average age of company tractors (in years)		1.8			1.9
Total trailers		4,225			4,111
Average age of company trailers (in years)		2.5			2.4
Ratio of trailers to tractors(1)		1.8			1.8

	Three Months Ended June 30,				Six Months Ended June 30,
(In thousands)	2014		2013		2014		2013
Net cash provided by operating activities	$	13,187	$	25,816	$	40,695	$	47,810
Net cash used for investing activities		48,149		41,331		69,533		54,416
Weighted average shares outstanding:
Basic		33,369		33,210		33,355		33,196
Diluted		33,696		33,378		33,662		33,344

(1)	Includes tractors driven by both company-employed drivers and independent contractors. Independent contractors provided 35 and 53 tractors as of June 30, 2014, and 2013, respectively.
(2)	Represents the percentage of miles for which the company is not compensated.