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Half Marathon Race Predictor


UPDATE: I have updated the prediction algorithm to hopefully be more accurate and a little less jumpy when going up hills or slowing down at water stations. It will use different factors to predict your finish time depending on where you are at in the race. Please let me know if you have see any issues.</p><p></p><p>Predicts your estimated half marathon finish time while you are running the race. No longer do you need to manually calculate your finish you will know 30 seconds into your race if you are on pace to crush your old PR or not. </p>


updated supported watches

Ulteriori informazioni

  • Captain Marvel Captain Marvel
  • D2™ Air D2™ Air
  • D2™ Bravo D2™ Bravo
  • D2™ Bravo Titanium D2™ Bravo Titanium
  • D2™ Charlie D2™ Charlie
  • D2™ Delta D2™ Delta
  • D2™ Delta PX D2™ Delta PX
  • D2™ Delta S D2™ Delta S
  • Darth Vader™ Darth Vader™
  • Descent™ Mk1 Descent™ Mk1
  • Descent™ MK2 Descent™ MK2, Descent™MK2i
  • Descent™ Mk2S Descent™ Mk2S
  • First Avenger First Avenger
  • ForeAthlete® 735XTJ ForeAthlete® 735XTJ
  • Forerunner® 230 Forerunner® 230
  • Forerunner® 235 Forerunner® 235
  • Forerunner® 245 Forerunner® 245
  • Forerunner® 245 Music Forerunner® 245 Music
  • Forerunner® 630 Forerunner® 630
  • Forerunner® 645 Forerunner® 645
  • Forerunner® 645 Music Forerunner® 645 Music
  • Forerunner® 735XT Forerunner® 735XT
  • Forerunner® 745 Forerunner® 745
  • Forerunner® 920XT Forerunner® 920XT
  • Forerunner® 935 Forerunner® 935
  • Forerunner® 945 Forerunner® 945
  • Forerunner® 945 LTE Forerunner® 945 LTE
  • fēnix® 3 fēnix® 3, quatix® 3, tactix® Bravo
  • fēnix® 3 HR fēnix® 3 HR
  • fēnix® 5 fēnix® 5, quatix® 5
  • fēnix® 5 Plus fēnix® 5 Plus
  • fēnix® 5S fēnix® 5S
  • fēnix® 5S Plus fēnix® 5S Plus
  • fēnix® 5X fēnix® 5X, tactix® Charlie
  • fēnix® 5X Plus fēnix® 5X Plus
  • fēnix® 6 fēnix® 6
  • fēnix® 6 Pro fēnix® 6 Pro, fēnix® 6 Sapphire
  • fēnix® 6 Pro Dual Power fēnix® 6 Pro Dual Power
  • fēnix® 6 Pro Solar fēnix® 6 Pro Solar
  • fēnix® 6 Solar fēnix® 6 Solar
  • fēnix® 6S fēnix® 6S
  • fēnix® 6S Dual Power fēnix® 6S Dual Power
  • fēnix® 6S Pro fēnix® 6S Pro, fēnix® 6S Sapphire
  • fēnix® 6S Pro Dual Power fēnix® 6S Pro Dual Power
  • fēnix® 6S Pro Solar fēnix® 6S Pro Solar
  • fēnix® 6S Solar fēnix® 6S Solar
  • fēnix® 6X Pro fēnix® 6X Pro, fēnix® 6X Sapphire, fēnix® 6X Pro Solar, tactix® Delta Sapphire, quatix® 6X Solar, tactix® Delta Solar, tactix® Delta Solar Ballistics
  • fēnix® Chronos fēnix® Chronos
  • MARQ™ Adventurer MARQ™ Adventurer
  • MARQ™ Athlete MARQ™ Athlete
  • MARQ™ Aviator MARQ™ Aviator
  • MARQ™ Captain MARQ™ Captain, MARQ™ Captain: American Magic Edition
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  • MARQ™ Driver MARQ™ Driver
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  • Mercedes-Benz Venu® Mercedes-Benz Venu®
  • quatix® 6 quatix® 6
  • quatix® 6X quatix® 6X, quatix® 6X Solar, quatix® 6X Dual Power
  • Rey™ Rey™
  • Venu® Venu®
  • vívoactive® vívoactive®
  • vívoactive® 3 vívoactive® 3
  • vívoactive® 3 Mercedes-Benz® Collection vívoactive® 3 Mercedes-Benz® Collection
  • vívoactive® 3 Music vívoactive® 3 Music
  • vívoactive® 4 vívoactive® 4, GarminActive
  • vívoactive® 4S vívoactive® 4S, GarminActive S
  • vívoactive® HR vívoactive® HR
Valutazione media: (28 valutazioni)

3 aprile 2021 | Versione 3.0.0

Very accurate. Used it today for the first time time in my long run training. At 6,9km it predicted 2:22:46 and the end result turned out to be 2:23:22, but I could for sure have gone a bit faster in the end if it had bern a race. The predicted time went up 10-20 min the three times when I walked a bit to drink and refill energy, but it came back to a good prediction again only 30 sec after I started running again.

Shane SNOWWOLF (Snowy)
30 novembre 2018 | Versione 2.1.0-upd5

you can use Training mode on 235 for this

Ricky McLeary
15 ottobre 2018 | Versione 2.1.0-upd5

Absolutely spot on, highly recommend this.

6 febbraio 2018 | Versione 2.1.0-upd5

I loved this data field on my Vivoactive. I just bought the Vivoactive 3 and I am very sad it is not compatible for Vivoactive 3...

2 aprile 2017 | Versione 2.1.0-upd5

Top for Forerunner 235

11 maggio 2016 | Versione 2.1.0-upd1

Installé sur Forerunner 235. Impossible d'ajouter l'information dans les écrans de données. Non repéré par ma montre. dommage...

11 maggio 2016 | Versione 2.1.0-upd1

Used it last Sunday on a race and it was SPOT ON. Maybe it could be in KM or just say HM for us non milers . Would love to see the SMART Predictor on the 235 as well. Anyways great field and Thank You for your efforts.

Felix Schumpelick
22 febbraio 2016 | Versione 2.1.0-upd

Thanks so much ! Works great on fenix 3 6.80 :)

22 gennaio 2016 | Versione 2.1.0

I have not used the app yet. To see this data one must add it to your data screen.

6 gennaio 2016 | Versione 2.1.0

E descargado la aplicacion en mi Fenix 3 y no aparece por ningun sitio no puedo ejecutarla porque no la veo en el Fenix 3

9 dicembre 2015 | Versione 2.1.0

Downloaded on vivoactive. Can't find anywhere on the watch. Help is appreciated. Thanks.

Андрей Заботин
25 ottobre 2015 | Versione 2.0.0-upd

I just tried it yesterday on half-marathon. Very conveniently and works great! Thanks! Попробовал вчера на полумарафоне. Удобно и работает отлично.

15 ottobre 2015 | Versione 2.0.0-upd

Can't seem to find this on my Fenix 3. I've downloaded the app but it's nowhere to be seen on the watch. It's not under my running fields and it's not shown as a stand alone app. Can you please advise me..

23 settembre 2015 | Versione 2.0.0-upd

Not appearing on my vivoactive screen!

25 agosto 2015 | Versione 2.0.0-upd

I love this data field. It is usually spot on and great for seeing how a training pace would play out for a half. Can't recommend this product enough and think it should be a standard data field

Paul Jones
14 giugno 2015 | Versione 2.0.0

Really accurate and incredibly useful !

Matthew P. Barnson
18 maggio 2015 | Versione 2.0.0

Does exactly what it says. Helped me nail my half marathon planned pace within a few seconds per mile. This is a great tool for anyone looking for exact pacing in a half marathon!

Jason Peters
26 aprile 2015 | Versione 2.0.0

Used it for the first time and it was pretty accurate.

Beth Olmstead
26 aprile 2015 | Versione 2.0.0

Help! I'm not finding it on my vivoactive to add it to my fields during an activity.

25 aprile 2015 | Versione 2.0.0

Very useful many thanks

Nick Pompei
13 aprile 2015 | Versione 1.1.3

Just used this yesterday for my first half of the year - worked flawlessly! Such a cool app and the fact that it can just be added right into a date field is perfect. Couldn't have asked for anything better, such a great app! Oh, helped me PR - 1:25:46 - thanks!

Brian Tolley
11 aprile 2015 | Versione 1.1.3

This worked awesome on my vivoactive during my half marathon. I impressed a few fellow runners when I told them our predicted total time.

8 aprile 2015 | Versione 1.1.3

Worked flawlessly at a recent half marathon.

21 febbraio 2015 | Versione 1.1.3

Can you pls do this for km as well

Dave Krom
11 febbraio 2015 | Versione 1.1.3

Very, very nice but can you make a predictor for the European runners with kilometers instead of miles? And here in holland we have a lot of 4 mile,, 10 mile and 15 km and 30 km runs. Is it possible to make a predictor for those distances also?