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MarathonSplits.
🇺🇸 New York City Marathon

Free marathon & half marathon pace calculator

Visualize your race.

See your whole race before you run it: splits shaped by every climb, your corral start, the race-day forecast, and when to take each gel.

Same effort start to finish.
0%

Adds the time of day to every split.

Carbs per hourSuggested 70 g

Your race plan

Awaiting your goal

Set a goal time to build your splits

  • Splits shaped by the course's climbs and descents
  • Even, negative, or positive split strategies
  • Send the plan straight to your watch

Race calendar

Upcoming races

Build your splits ahead of race day — sorted by date.

  1. Oct25🇩🇪 Frankfurt MarathonSun, Oct 25
  2. Oct25🇺🇸 Marine Corps MarathonSun, Oct 25
  3. Oct25🇮🇪 Dublin MarathonSun, Oct 25
  4. Oct25🇪🇸 Valencia Half MarathonSun, Oct 25
  5. Nov1🇺🇸 New York City MarathonMajorSun, Nov 1
  6. Nov1🇳🇿 Auckland MarathonSun, Nov 1

Why elevation matters

Marathon pacing that accounts for the course

Even splits are easy to calculate, but courses rarely ask for even effort. Marathon Splits uses GPX elevation data to shape a plan around climbs, descents, and flat sections while still hitting your target time.

  1. 01

    Pick a race or upload a GPX

    Every World Major plus dozens of city marathons and halfs, each with a real course profile.

  2. 02

    Set a goal and a strategy

    Even, negative, or positive splits. Kilometres or miles. Change anything and the plan updates live.

  3. 03

    Race it from your wrist

    Send the plan to Paceboard for Apple Watch, Garmin or COROS, or share a link with your crew.

New to pacing strategy? Read the marathon pacing guide.

Goal times

Marathon pace targets

Start from a classic goal and see exactly what pace it takes.

Course library

Marathon pace calculators

58 marathon courses with real elevation profiles.

Boston Marathon

Boston, MA

Major

Point-to-point from Hopkinton to Boylston, with fast early downhills before the Newton Hills and Heartbreak

↑130m↓260m

New York City Marathon

New York, NY

Major

Five-borough route from Staten Island to Central Park, with bridge climbs shaping the rhythm from the Verrazzano onward

↑75m↓100m

Chicago Marathon

Chicago, IL

Major

Flat, fast Grant Park loop through 29 Chicago neighborhoods, built for steady pacing and loud crowd sections

↑5m↓6m

London Marathon

London, UK

Major

Mostly flat route from Greenwich to The Mall, passing Cutty Sark, Tower Bridge, the Embankment, and Buckingham Palace

↑51m↓87m

Berlin Marathon

Berlin, Germany

Major

Berlin’s record-hunting course: very little elevation, long straight sections, and the final push through the Brandenburg Gate

↑29m↓28m

Tokyo Marathon

Tokyo, Japan

Major

Fast city course from the Tokyo Metropolitan Government Building to Tokyo Station, linking Shinjuku, Nihombashi, Asakusa, and Ginza

↑195m↓223m

Sydney Marathon

Sydney, Australia

Major

Scenic harbour course over the Sydney Harbour Bridge, through the city, and into an Opera House Forecourt finish

↑198m↓265m

Ottawa International Marathon

Ottawa, ON

Scenic capital course, mostly flat

↑88m↓89m

Toronto Waterfront Marathon

Toronto, ON

Flat lakeshore course, fast and certified

↑72m↓75m

Buffalo Marathon

Buffalo, NY

Flat urban course through downtown Buffalo and Delaware Park

↑119m↓120m

Vancouver Marathon

Vancouver, BC

Scenic seawall and neighbourhoods, some rolling hills

↑149m↓221m

Calgary Marathon

Calgary, AB

Flat river valley course through Calgary neighbourhoods

↑74m↓72m

Stockholm Marathon

Stockholm, Sweden

Urban course through central Stockholm

↑137m↓138m

Amsterdam Marathon

Amsterdam, Netherlands

Flat course past canals and the Vondelpark, finishing inside the Olympic Stadium

↑50m↓51m

Valencia Marathon

Valencia, Spain

One of the fastest courses in the world: flat, wide roads, few turns, finishing over the water by the City of Arts and Sciences

↑50m↓56m

Singapore Marathon

Singapore

Flat course past Marina Bay and the civic district, run into the morning in tropical heat and humidity

↑148m↓149m

Frankfurt Marathon

Frankfurt, Germany

Flat, fast loop through the city and suburbs with an indoor finish inside the Festhalle

↑43m↓42m

Auckland Marathon

Auckland, New Zealand

Harbour Bridge crossing early, then waterfront and city streets to a downtown finish

↑114m↓115m

Gold Coast Marathon

Gold Coast, QLD

Flat, fast out-and-back along the Gold Coast oceanfront, a renowned personal-best course

↑84m↓89m

Hong Kong Marathon

Hong Kong

Bridge and tunnel course from Tsim Sha Tsui through Kowloon, with long flyover climbs and a harbour-tunnel section

↑226m↓214m

Osaka Marathon

Osaka, Japan

City course past Osaka Castle and through central Osaka, mostly flat with a few bridge rises

↑51m↓69m

Seoul Marathon

Seoul, South Korea

Fast point-to-point through central Seoul, finishing with a lap of the Jamsil Olympic Stadium

↑75m↓100m

Paris Marathon

Paris, France

From the Champs-Élysées through the Louvre and Bastille to the Bois de Boulogne, gently rolling with cobbled sections

↑100m↓80m

Rotterdam Marathon

Rotterdam, Netherlands

Flat, fast course over the Erasmus Bridge and through the city, long a target for quick times

↑52m↓47m

Manchester Marathon

Manchester, UK

Flat, wide loop through south Manchester and Trafford, the UK's second-largest marathon

↑69m↓59m

Seville Marathon

Seville, Spain

Europe's flattest big-city marathon, a single loop through historic Seville

↑34m↓34m

Barcelona Marathon

Barcelona, Spain

Flat city-centre loop past the Sagrada Família, Camp Nou, and the Mediterranean seafront

↑113m↓130m

Melbourne Marathon

Melbourne, VIC

Flat course through the CBD and along Port Phillip Bay, finishing with a lap inside the MCG

↑85m↓75m

California International Marathon

Sacramento, CA

Net downhill point-to-point from Folsom to the State Capitol, a renowned Boston-qualifier course

↑35m↓136m

Marine Corps Marathon

Washington, DC

Rolling tour of the DC monuments from the Pentagon to the Marine Corps War Memorial, with a hill at the finish

↑99m↓92m

Dublin Marathon

Dublin, Ireland

Loop of the Irish capital through the Phoenix Park and Georgian streets, with a long drag around 18 miles

↑161m↓162m

Grandma's Marathon

Duluth, MN

Point-to-point along the Lake Superior shore from Two Harbors into Duluth, gently net downhill

↑70m↓105m

Hamburg Marathon

Hamburg, Germany

Flat, fast loop around the Alster lakes and the harbour, one of Germany's quickest courses

↑108m↓108m

Honolulu Marathon

Honolulu, HI

Early-morning start past Waikiki and Diamond Head, warm and humid with a climb over the crater

↑87m↓87m

Houston Marathon

Houston, TX

Flat, fast city loop, a US Olympic Trials course and a reliable winter personal-best race

↑30m↓26m

Indianapolis Monumental Marathon

Indianapolis, IN

Flat, wide downtown course, one of the fastest Boston-qualifier races in the US

↑73m↓70m

Mexico City Marathon

Mexico City, Mexico

Large city course run at 2,240 m altitude, from the university stadium to the Zócalo

↑79m↓131m

Mumbai Marathon

Mumbai, India

Out-and-back along Marine Drive and the Bandra–Worli Sea Link, flat but warm and humid

↑139m↓144m

Philadelphia Marathon

Philadelphia, PA

Historic-district start, then an out-and-back along the Schuylkill River to Manayunk, mostly flat

↑102m↓94m

Prague Marathon

Prague, Czech Republic

Fast cobbled loop through the old town and along the Vltava, with several bridge crossings

↑86m↓86m

Rome Marathon

Rome, Italy

Sightseeing loop past the Colosseum, Vatican, and Trevi Fountain, flat with long cobbled sections

↑106m↓110m

Twin Cities Marathon

Minneapolis, MN

Scenic point-to-point from Minneapolis to St Paul past the city lakes, with a climb in the final 5 miles

↑117m↓119m

Vienna City Marathon

Vienna, Austria

Flat course along the Danube and Ringstrasse past the city's landmarks

↑123m↓108m

Athens Marathon

Athens, Greece

The original marathon route from the town of Marathon to the Panathenaic Stadium, with a long climb from 10 km to 31 km

↑289m↓230m

Copenhagen Marathon

Copenhagen, Denmark

Flat two-lap city course through the central districts and along the harbour

↑94m↓94m

Cape Town Marathon

Cape Town, South Africa

Flat, fast city-bowl loop below Table Mountain, an Abbott World Marathon Majors candidate

↑148m↓152m

Los Angeles Marathon

Los Angeles, CA

"Stadium to the Sea" — point-to-point from Dodger Stadium through Hollywood, Sunset Boulevard, and Beverly Hills to Century City

↑165m↓227m

Walt Disney World Marathon

Lake Buena Vista, FL

Runs through all four Walt Disney World theme parks — Magic Kingdom, Animal Kingdom, Hollywood Studios, and Epcot

↑24m↓24m

Miami Marathon

Miami, FL

Flat loop through Miami and Miami Beach, crossing the MacArthur and Venetian causeways past Biscayne Bay

↑23m↓23m

Edinburgh Marathon

Edinburgh, UK

Britain's flattest marathon — a point-to-point along the Firth of Forth coastline from Edinburgh to Musselburgh and back through Prestonpans

↑59m↓146m

Budapest Marathon

Budapest, Hungary

Loops both banks of the Danube, crossing between Buda and Pest, finishing near Heroes’ Square

↑100m↓95m

Xiamen Marathon

Xiamen, China

A coastal loop around Xiamen Island along Huandao Road, widely rated one of the most scenic marathons in China

↑56m↓56m

Brighton Marathon

Brighton, UK

Point-to-point from Preston Park to Hove Lawns, with its main climbs done by mile 11 and a long, flat seafront finish

↑86m↓108m

Lisbon Marathon

Lisbon, Portugal

Coastal point-to-point from Carcavelos along the Tagus estuary to Praça do Comércio, flat and fast almost all the way

↑106m↓108m

Buenos Aires Marathon

Buenos Aires, Argentina

Flat loop from Palermo through the city centre and back, one of the fastest marathons in South America

↑89m↓90m

Richmond Marathon

Richmond, VA

"America's Friendliest Marathon" — rolling city loop that crosses the James River and finishes downhill to Brown's Island

↑130m↓161m

Austin Marathon

Austin, TX

Rolling loop that starts and finishes by the Texas Capitol, with some of the steepest climbs of any big US city marathon

↑187m↓184m

Munich Marathon

Munich, Germany

Flat loop from the Olympic Park through the city centre and the English Garden, finishing inside the Olympic Stadium

↑85m↓98m

Half marathon pace calculators

16 half marathon courses.

Toronto Waterfront Half Marathon

Toronto, ON

Downtown loop and a Lake Shore out-and-back, finishing on Bay St by City Hall

↑51m↓54m

Copenhagen Half Marathon

Copenhagen, Denmark

Flat, fast loop through central Copenhagen and the harbour

↑19m↓19m

Ottawa Half Marathon

Ottawa, ON

Scenic capital course through Gatineau Park

↑63m↓64m

Great North Run

Newcastle, UK

The world's largest half marathon, point-to-point from Newcastle to the coast at South Shields, net downhill with a late climb

↑74m↓105m

The Big Half

London, UK

London Marathon Events' half over Tower Bridge and through the East End, flat and fast

↑29m↓33m

Cardiff Half Marathon

Cardiff, UK

Flat city loop past Cardiff Castle and around Cardiff Bay, a popular personal-best course

↑53m↓47m

Delhi Half Marathon

New Delhi, India

Fast loop through Lutyens' Delhi past India Gate, flat with a world-class elite field

↑18m↓21m

Valencia Half Marathon

Valencia, Spain

A former half marathon world-record course: flat, wide, and fast through the city centre

↑24m↓28m

Lisbon Half Marathon

Lisbon, Portugal

Starts across the 25 de Abril Bridge with a downhill opening, then flat along the Tagus to Belém

↑27m↓31m

NYC Half Marathon

New York, NY

Prospect Park to Central Park via Times Square, with bridge and tunnel climbs

↑72m↓79m

Prague Half Marathon

Prague, Czech Republic

Flat, fast loop along both banks of the Vltava, a SuperHalfs race

↑21m↓20m

Berlin Half Marathon

Berlin, Germany

Flat city-centre loop past the Brandenburg Gate, a fast spring race

↑23m↓22m

Gothenburg Half Marathon

Gothenburg, Sweden

Göteborgsvarvet — historically the world's largest half, a rolling city loop with a hill at Örgryte

↑99m↓103m

Paris Half Marathon

Paris, France

One of Europe's biggest halves — a flat city loop through eastern Paris and along the Seine

↑48m↓44m

Barcelona Half Marathon

Barcelona, Spain

Flat, fast course through central Barcelona and along the seafront, one of the fastest halves in the world

↑53m↓51m

Brooklyn Half Marathon

Brooklyn, NY

The largest half in the US — Prospect Park's hills first, then a flat run down Ocean Parkway to the Coney Island boardwalk

↑49m↓85m

FAQ

Questions runners ask

Short answers on how the calculator builds a plan.

How do I calculate marathon splits?

Choose a marathon course or distance, enter your goal finish time, select kilometers or miles, and generate a split-by-split pacing plan.

Should marathon pace change on hills?

A hill-adjusted plan usually slows the target pace on climbs and allows faster splits on descents so the effort stays more even across the course.

What is an elevation-adjusted pace plan?

An elevation-adjusted pace plan uses the course profile to distribute effort by split instead of assuming the same pace for every kilometer or mile. The goal is to slow slightly on climbs, recover time on descents, and still hit your target finish time.