Exhibit 99.1.



Outlook

     The  outlook regarding Marathon's upstream revenues and income  is  largely
dependent upon future prices and volumes of liquid hydrocarbons and natural gas.
Prices  have  historically been volatile and have frequently  been  affected  by
unpredictable  changes  in  supply and demand  resulting  from  fluctuations  in
worldwide economic activity and political developments in the world's major  oil
and  gas producing and consuming areas.  Any significant decline in prices could
have  a  material  adverse  effect on the Company's results  of  operations.   A
prolonged  decline in such prices could also adversely affect  the  quantity  of
crude  oil  and natural gas reserves that can be economically produced  and  the
amount of capital available for exploration and development.

     In 2002, worldwide production is expected to average 430,000 barrels of oil
equivalent  per day, split evenly between liquid hydrocarbons and  natural  gas,
including  Marathon's  proportionate share of equity investee's  production  and
future acquisitions.

     On  January  3,  2002, Marathon completed its acquisition of  CMS  Energy's
interests in Equatorial Guinea.  For a total cash consideration of $993 million,
excluding working capital adjustments, Marathon acquired:

     * a  52.4  percent interest in, and operations of, the offshore Alba Block,
       which  contains  the  currently producing  Alba  gas  field  as  well  as
       undeveloped  oil  and  gas discoveries and several  possible  exploration
       prospects;

     * a 37.6 percent interest in the adjacent offshore Block D;

     * a 52.4 percent interest in an onshore condensate separation facility;

     * a  45  percent  interest in a joint venture onshore  methanol  production
       plant;

     * a  43.2 percent interest in an onshore liquefied petroleum gas processing
       plant.

     In 2002, Marathon plans to drill, or complete drilling operations on, three
or  four deepwater wells in the Gulf of Mexico, including the appraisal  of  the
Ozona Deep discovery.

     Other  major  upstream  projects, which are  currently  underway  or  under
evaluation and are expected to improve future income streams, include:

     * Norway,   where  Marathon  has  completed  the  acquisition  of   various
       interests in five licenses in the Norwegian sector of the North Sea;

     * Alaska,  where  Marathon  recently had a natural  gas  discovery  on  the
       Ninilchik  Unit on the Kenai Peninsula.  Additional drilling  is  planned
       in 2002.

     * Angola,  where Marathon expects to participate in the drilling of  up  to
       three exploration wells during 2002.

     On  February  28,  2002,  Marathon announced proposed  plans  for  a  major
liquefied natural gas ("LNG") re-gasification and power generation complex  near
Tijuana  in  the Mexican State of Baja California.  The proposed  complex  would
consist  of  a  LNG  marine  terminal,  an  off-loading  terminal,  onshore  LNG
re-gasification facilities, and pipeline infrastructure necessary  to  transport
the natural gas.  In addition, a 400 megawatt natural gas-fired power generation
plant  would  be constructed on the site.  The complex would supply natural  gas
and  electricity  for  local use as well as for export to  Southern  California.
Completion and potential start-up is projected for 2005.

     On February 28, 2002, Marathon announced plans to lead an initiative for  a
new  North Sea natural gas pipeline designed to provide additional gas  for  the
U.K.  market.  The proposed 675 kilometer dry natural gas pipeline would connect
the Norwegian Heimdal area of the North Sea to Bacton, on the southeast coast of
the U.K.  The pipeline would pass through the Brae complex and pass adjacent  to
other large gas processing/transportation facilities in the U.K. North Sea.  The
pipeline  would terminate at or near the existing Bacton Terminal.  The pipeline
would  allow  gas  to be aggregated from numerous U.K. and Norwegian  North  Sea
producers  for  transportation  to  Bacton  where  it  would  then  be  sold  to
commercial, industrial and residential customers.  Marathon estimates  that  the
pipeline could begin operations in 2005.



     On  April  8,  2002, Marathon announced it had experienced and contained  a
well-control event caused by an influx of gas at Marathon's Annapolis  deepwater
exploratory  well off shore Nova Scotia. The Annapolis B-24 well is located  215
miles  south  of  Halifax  in 5,700 feet of water.  Drilling  of  the  well  was
suspended on March 24 when the gas influx occurred at an intermediate well depth
of  11,469 feet. The well has been plugged and abandoned for mechanical  reasons
and  drilling  has commenced on a new Annapolis G-24 well located  approximately
1,633  feet  NNE of the previous surface location. Marathon holds a  30  percent
interest in the Annapolis prospect and serves as operator.

     On April 11, 2002, Marathon announced it signed a definitive agreement with
XTO  Energy  Inc. ("XTO"), whereby Marathon will exchange certain  oil  and  gas
properties in east Texas and north Louisiana for XTO coalbed methane  assets  in
the  Powder  River Basin of northern Wyoming and southern Montana. These  assets
will allow Marathon to leverage its expertise in coalbed methane development  in
this core area.  The transaction is expected to close May 1, 2002.  In addition,
XTO  will purchase Marathon's production interests in the San Juan Basin of  New
Mexico  for $43 million and this transaction is expected to close July 1,  2002.
As  a  result  of the asset trade, Marathon is expected to add some 110  billion
cubic  feet  of  proven  reserves.  Marathon also  expects  to  reduce  per-unit
operating  expenses  by leveraging economies of scale in  this  core  area.  The
overall effect on 2002 worldwide annual production is expected to be neutral  or
slightly incremental. These agreements are part of a trade auction announced  in
late February to market selected properties in a competitive process designed to
establish a greater presence in core areas where Marathon's size, infrastructure
and   regional   expertise  will  create  additional  value.  Additional   trade
transactions are also being pursued.

     On  April 17, 2002, the U.K. announced a proposed supplementary 10  percent
tax on profits from North Sea oil and gas production. Marathon has approximately
19  percent  of  current  year production coming from the  UK.   If  enacted  as
proposed  the  potential effects of these tax changes could add approximately  2
percent to Marathon's effective tax rate, excluding a one-time non-cash deferred
tax catch-up adjustment.

     The  above  discussion includes forward-looking statements with respect  to
the timing and levels of Marathon's worldwide liquid hydrocarbon and natural gas
production,  the exploration drilling program, the planned construction  of  LNG
and pipeline facilities, the anticipated closing for the exchange of oil and gas
properties  for coalbed methane assets and sale of production assets, additional
reserves  and  reductions  in  operating  expenses.   Some  factors  that  could
potentially  affect worldwide liquid hydrocarbon and natural gas production  and
the  exploration drilling program include acts of war or terrorist acts and  the
governmental  or  military response, pricing, supply and  demand  for  petroleum
products,   amount  of  capital  available  for  exploration  and   development,
occurrence  of  acquisitions/dispositions of oil and gas properties,  regulatory
constraints,  timing  of  commencing production from  new  wells,  drilling  rig
availability and other geological, operating and economic considerations.   Some
factors  that  could affect the planned construction of the LNG re-gasification,
power  generation  and  related facilities, as well as the  North  Sea  pipeline
transportation  and  related  facilities,  include,  but  are  not  limited  to,
unforeseen difficulty in the negotiation of definitive agreements among  project
participants, identification of additional participants to reach optimum  levels
of  participation,  inability  or delay in obtaining  necessary  government  and
third-party  approvals,  arranging sufficient project  financing,  unanticipated
changes  in  market  demand  or supply, competition with  similar  projects  and
environmental  and permitting issues.  Additionally, the LNG  project  could  be
impacted  by  the availability or construction of sufficient LNG  vessels.   The
forward-looking  information related to the exchange of oil and  gas  properties
for  coalbed methane assets and sale of production assets, reserve additions and
anticipated  operating  expense  reduction  is  based  on  certain  assumptions,
including,  among others, closing of the transactions, presently known  physical
data  concerning  size  and  character of reservoirs,  economic  recoverability,
technology development, future drilling success, production experience, industry
economic   conditions,  levels  of  cash  flow  from  operations  and  operating
conditions.  The foregoing factors (among others) could cause actual results  to
differ materially from those set forth in the forward-looking statements.

     Marathon's  downstream income is largely dependent upon  the  refining  and
wholesale  marketing margin for refined products, the retail  gross  margin  for
gasoline and distillates, and the gross margin on retail merchandise sales.  The
refining  and  wholesale  marketing margin reflects the difference  between  the
wholesale  selling  prices of refined products and the  cost  of  raw  materials
refined,  purchased  product  costs and manufacturing  expenses.   Refining  and
wholesale  marketing margins have been historically volatile and vary  with  the
level  of  economic  activity  in the various marketing  areas,  the  regulatory
climate,  the  seasonal  pattern  of certain product  sales,  crude  oil  costs,
manufacturing costs, the available supply of crude oil and refined products, and
logistical  constraints.  The retail gross margin for gasoline  and  distillates
reflects the difference between the retail selling prices of these products  and
their  wholesale cost, including secondary transportation.  Retail gasoline  and
distillate  margins  have  also  been historically  volatile,  but  tend  to  be
countercyclical  to  the  refining  and  wholesale  marketing  margin.   Factors
affecting  the  retail  gasoline and distillate margin include  seasonal  demand
fluctuations, the available wholesale supply, the level of economic activity  in
the  marketing areas and weather situations that impact driving conditions.  The
gross  margin  on  retail merchandise sales tends to be less volatile  than  the
retail  gasoline and distillate margin.  Factors affecting the gross  margin  on
retail  merchandise sales include consumer demand for merchandise items and  the
level of economic activity in the marketing area.

     At  its  Catlettsburg,  Kentucky refinery, MAP has initiated  a  multi-year
integrated  investment program to upgrade product yield realizations and  reduce
fixed and variable manufacturing expenses.  This program involves the expansion,
conversion  and  retirement  of  certain refinery  processing  units  which,  in
addition  to improving profitability, will reduce the refinery's total  gasoline
pool  sulfur  below  30 ppm, thereby eliminating the need for  additional  clean
fuels  program  investments  at the refinery.  The project  is  expected  to  be
completed in 2004.

     MAP  is working to improve its logistics network, and Marathon Ashland Pipe
Line  LLC has been designated operator of the Centennial Pipeline, owned jointly
by  Panhandle Eastern Pipe Line Company, a subsidiary of CMS Energy Corporation,
MAP,  and TE Products Pipe Line Company, Limited Partnership.  The new pipeline,
which connects the Gulf Coast refiners with the Midwest market, has the capacity
to transport approximately 210,000 barrels per day of refined petroleum products
and began deliveries of refined products on April 4, 2002.

     A  MAP  subsidiary, Ohio River Pipe Line LLC ("ORPL"),  plans  to  build  a
pipeline from Kenova, West Virginia to Columbus, Ohio.  ORPL is a common carrier
pipeline company and the pipeline will be an interstate common carrier pipeline.
The  pipeline is currently known as Cardinal Products Pipe Line and is  expected
to  initially  move about 50,000 barrels per day of refined petroleum  into  the
central  Ohio  region.   As  of  December 2001, ORPL  has  secured  all  of  the
rights-of-way  required to build the pipeline.  Applications for  the  remaining
construction  permits  have been filed.  Construction is currently  planned  for
summer  2002 pending receipt of permits, with start-up of the pipeline  expected
to follow in the first half of 2003.

     The  above  discussion includes forward-looking statements with respect  to
the  Catlettsburg  refinery and the Cardinal Products Pipe  Line  system.   Some
factors  that  could potentially cause the actual results from the  Catlettsburg
investment  program to differ materially from current expectations  include  the
price of petroleum products, levels of cash flows from operations, obtaining the
necessary  construction and environmental permits, unforeseen  hazards  such  as
weather conditions and regulatory approval constraints.  Some factors that could
impact  the Cardinal Products Pipe Line include obtaining the necessary  permits
and completion of construction.  These factors (among others) could cause actual
results  to  differ  materially  from those set  forth  in  the  forward-looking
statements.