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.
Your race plan
Awaiting your goalSet 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
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Build your splits ahead of race day — sorted by date.
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.
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Pick a race or upload a GPX
Every World Major plus dozens of city marathons and halfs, each with a real course profile.
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Set a goal and a strategy
Even, negative, or positive splits. Kilometres or miles. Change anything and the plan updates live.
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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
Point-to-point from Hopkinton to Boylston, with fast early downhills before the Newton Hills and Heartbreak
New York City Marathon
New York, NY
Five-borough route from Staten Island to Central Park, with bridge climbs shaping the rhythm from the Verrazzano onward
Chicago Marathon
Chicago, IL
Flat, fast Grant Park loop through 29 Chicago neighborhoods, built for steady pacing and loud crowd sections
London Marathon
London, UK
Mostly flat route from Greenwich to The Mall, passing Cutty Sark, Tower Bridge, the Embankment, and Buckingham Palace
Berlin Marathon
Berlin, Germany
Berlin’s record-hunting course: very little elevation, long straight sections, and the final push through the Brandenburg Gate
Tokyo Marathon
Tokyo, Japan
Fast city course from the Tokyo Metropolitan Government Building to Tokyo Station, linking Shinjuku, Nihombashi, Asakusa, and Ginza
Sydney Marathon
Sydney, Australia
Scenic harbour course over the Sydney Harbour Bridge, through the city, and into an Opera House Forecourt finish
Ottawa International Marathon
Ottawa, ON
Scenic capital course, mostly flat
Toronto Waterfront Marathon
Toronto, ON
Flat lakeshore course, fast and certified
Buffalo Marathon
Buffalo, NY
Flat urban course through downtown Buffalo and Delaware Park
Vancouver Marathon
Vancouver, BC
Scenic seawall and neighbourhoods, some rolling hills
Calgary Marathon
Calgary, AB
Flat river valley course through Calgary neighbourhoods
Stockholm Marathon
Stockholm, Sweden
Urban course through central Stockholm
Amsterdam Marathon
Amsterdam, Netherlands
Flat course past canals and the Vondelpark, finishing inside the Olympic Stadium
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
Singapore Marathon
Singapore
Flat course past Marina Bay and the civic district, run into the morning in tropical heat and humidity
Frankfurt Marathon
Frankfurt, Germany
Flat, fast loop through the city and suburbs with an indoor finish inside the Festhalle
Auckland Marathon
Auckland, New Zealand
Harbour Bridge crossing early, then waterfront and city streets to a downtown finish
Gold Coast Marathon
Gold Coast, QLD
Flat, fast out-and-back along the Gold Coast oceanfront, a renowned personal-best course
Hong Kong Marathon
Hong Kong
Bridge and tunnel course from Tsim Sha Tsui through Kowloon, with long flyover climbs and a harbour-tunnel section
Osaka Marathon
Osaka, Japan
City course past Osaka Castle and through central Osaka, mostly flat with a few bridge rises
Seoul Marathon
Seoul, South Korea
Fast point-to-point through central Seoul, finishing with a lap of the Jamsil Olympic Stadium
Paris Marathon
Paris, France
From the Champs-Élysées through the Louvre and Bastille to the Bois de Boulogne, gently rolling with cobbled sections
Rotterdam Marathon
Rotterdam, Netherlands
Flat, fast course over the Erasmus Bridge and through the city, long a target for quick times
Manchester Marathon
Manchester, UK
Flat, wide loop through south Manchester and Trafford, the UK's second-largest marathon
Seville Marathon
Seville, Spain
Europe's flattest big-city marathon, a single loop through historic Seville
Barcelona Marathon
Barcelona, Spain
Flat city-centre loop past the Sagrada Família, Camp Nou, and the Mediterranean seafront
Melbourne Marathon
Melbourne, VIC
Flat course through the CBD and along Port Phillip Bay, finishing with a lap inside the MCG
California International Marathon
Sacramento, CA
Net downhill point-to-point from Folsom to the State Capitol, a renowned Boston-qualifier course
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
Dublin Marathon
Dublin, Ireland
Loop of the Irish capital through the Phoenix Park and Georgian streets, with a long drag around 18 miles
Grandma's Marathon
Duluth, MN
Point-to-point along the Lake Superior shore from Two Harbors into Duluth, gently net downhill
Hamburg Marathon
Hamburg, Germany
Flat, fast loop around the Alster lakes and the harbour, one of Germany's quickest courses
Honolulu Marathon
Honolulu, HI
Early-morning start past Waikiki and Diamond Head, warm and humid with a climb over the crater
Houston Marathon
Houston, TX
Flat, fast city loop, a US Olympic Trials course and a reliable winter personal-best race
Indianapolis Monumental Marathon
Indianapolis, IN
Flat, wide downtown course, one of the fastest Boston-qualifier races in the US
Mexico City Marathon
Mexico City, Mexico
Large city course run at 2,240 m altitude, from the university stadium to the Zócalo
Mumbai Marathon
Mumbai, India
Out-and-back along Marine Drive and the Bandra–Worli Sea Link, flat but warm and humid
Philadelphia Marathon
Philadelphia, PA
Historic-district start, then an out-and-back along the Schuylkill River to Manayunk, mostly flat
Prague Marathon
Prague, Czech Republic
Fast cobbled loop through the old town and along the Vltava, with several bridge crossings
Rome Marathon
Rome, Italy
Sightseeing loop past the Colosseum, Vatican, and Trevi Fountain, flat with long cobbled sections
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
Vienna City Marathon
Vienna, Austria
Flat course along the Danube and Ringstrasse past the city's landmarks
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
Copenhagen Marathon
Copenhagen, Denmark
Flat two-lap city course through the central districts and along the harbour
Cape Town Marathon
Cape Town, South Africa
Flat, fast city-bowl loop below Table Mountain, an Abbott World Marathon Majors candidate
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
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
Miami Marathon
Miami, FL
Flat loop through Miami and Miami Beach, crossing the MacArthur and Venetian causeways past Biscayne Bay
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
Budapest Marathon
Budapest, Hungary
Loops both banks of the Danube, crossing between Buda and Pest, finishing near Heroes’ Square
Xiamen Marathon
Xiamen, China
A coastal loop around Xiamen Island along Huandao Road, widely rated one of the most scenic marathons in China
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
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
Buenos Aires Marathon
Buenos Aires, Argentina
Flat loop from Palermo through the city centre and back, one of the fastest marathons in South America
Richmond Marathon
Richmond, VA
"America's Friendliest Marathon" — rolling city loop that crosses the James River and finishes downhill to Brown's Island
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
Munich Marathon
Munich, Germany
Flat loop from the Olympic Park through the city centre and the English Garden, finishing inside the Olympic Stadium
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
Copenhagen Half Marathon
Copenhagen, Denmark
Flat, fast loop through central Copenhagen and the harbour
Ottawa Half Marathon
Ottawa, ON
Scenic capital course through Gatineau Park
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
The Big Half
London, UK
London Marathon Events' half over Tower Bridge and through the East End, flat and fast
Cardiff Half Marathon
Cardiff, UK
Flat city loop past Cardiff Castle and around Cardiff Bay, a popular personal-best course
Delhi Half Marathon
New Delhi, India
Fast loop through Lutyens' Delhi past India Gate, flat with a world-class elite field
Valencia Half Marathon
Valencia, Spain
A former half marathon world-record course: flat, wide, and fast through the city centre
Lisbon Half Marathon
Lisbon, Portugal
Starts across the 25 de Abril Bridge with a downhill opening, then flat along the Tagus to Belém
NYC Half Marathon
New York, NY
Prospect Park to Central Park via Times Square, with bridge and tunnel climbs
Prague Half Marathon
Prague, Czech Republic
Flat, fast loop along both banks of the Vltava, a SuperHalfs race
Berlin Half Marathon
Berlin, Germany
Flat city-centre loop past the Brandenburg Gate, a fast spring race
Gothenburg Half Marathon
Gothenburg, Sweden
Göteborgsvarvet — historically the world's largest half, a rolling city loop with a hill at Örgryte
Paris Half Marathon
Paris, France
One of Europe's biggest halves — a flat city loop through eastern Paris and along the Seine
Barcelona Half Marathon
Barcelona, Spain
Flat, fast course through central Barcelona and along the seafront, one of the fastest halves in the world
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
FAQ
Questions runners ask
Short answers on how the calculator builds a plan.