MEC London Race ONE: 5K/10K/Half & Full Marathon (Boston Qualifier)

  • Date
    Saturday, 25 May, 2019
  • Time
    From 08:00 am to 02:00 pm EDT
  • Organizer
    MEC London
  • Price
  • Address
    Saint Julien Park
    40 Elgin Street
    London, ON


Update 6:38am: PROCEED with full marathon delayed until 8:30am.

if thunder/lightning persist past 7:30am another delay will be instituted. 


Update 6:00am 25-05-19: our race crew is still waiting to get on the course. Full marathon will be delayed until 8:30am for setup time. Full marathon and half marathon will both start at 8:30am. Please keep checking this page for further updates. 

Update 5:00am 25-05-19: our race crew is on site waiting for the storm to pass before we begin marking the course.

no delay is announced yet but check back at 6:00-6:30am. 

8:00AM | Full Marathon: currently delayed until 8:30am

8:30AM | Half Marathon: on time

9:00AM | 5K/10K: on time

Update: Thunderstorm risk protocol

24/05/2019: There is still a risk of thunderstorms throughout Saturday morning advised. The race director will announce a proceed/delay/cancel procedure at 6:30AM on Race morning, 90 minutes before the start of the first wave (full marathon). This announcement will be posted on this race page and announced at the race site throughout the morning.

Other races may be delayed due to risk of thunder and lightning.

23/05/2019: Environment Canada and The Weather Network are advising a high risk of thunderstorms throughout Saturday morning. Regular updates will be posted on this website and sent directly to your e-mail that you have registered with. Please check this page and your e-mail regularly for notifications on potential changes to event times or cancellation due to extreme weather as per Environment Canada guidelines.

ST. JULIEN PARK - 5k / 10k / Half Marathon / Full Marathon (Boston Qualifier)

Continue your 2019 running season and join us for MEC London Race ONE: 5K/10K/Half Marathon and Full Marathon on May 25th, 2019. Choose from a 5K, 10K or a challenging Half Marathon or Full Marathon option (Boston qualifier). All distances running alongside the Thames River.  

Distance Online In-store Race day
5K / 10K $20 $20 $30
21.1K Half Marathon  $25 $25 $35
42.2 Full Marathon  $35 $35 $45


Register online or in-store before Thursday May 23, 2019 at 1pm. 

Note: Race day registration is cash only, and is available from 7:00am - 8:45am on May 25th at the registration tent.

To Register Click Register at the bottom of the page. 



Friday May 24th 10am-7pm  Location: MEC London

Package pick up deal: Get 10% off purchases you make in store when pick up your race package.

You can still register in store on these days! You cannot register someone else if they are not there in person (to sign waiver).


Saturday, May 25th, from 7:00am - 8:45am at event site



In the event of thunder and lightning BEFORE or at the start time of the event:

The race director will make a decision to proceed, delay, or cancel 90 minutes before the start of the earliest start time. We follow Environment Canada’s extreme weather guidelines for thunder and lightning. This will be announced on the race site and posted on the race website.

In the event that thunder and lightning starts DURING the event:

  • Please seek shelter immediately. If you can hear thunder, you can get hit by lightning. When thunder roars, consider stopping your activity immediately and monitor your surroundings.
  • Locate a staff member and they will direct you to the nearest area of shelter.
  • Remain in shelter a minimum of 30 minutes after the last clap of thunder / lightning, etc.
  • Remember the 30-30 rule: When you can count 30 seconds or less between lightning and thunder, head for safe shelter.

In the event of severe weather, MEC reserves the right to cancel the event for participant safety. As per our refund policy, MEC does not offer refunds or event transfers due to experiencing inclement weather within a 24-hour window of the indicated start time. MEC reserves the right to cancel events that experience thunder, lightning, and other environmental extremes as per Environment Canada Guidelines.


8:00am: Full Marathon Start

8:30am: Half Marathon Start

9:00am: 10K / 5K Start



Saint Julien Park - London 




Help us keep our races green by bringing your own water bottle. (Compostable cups and on-site recycling and composting will also be provided.)

Race Route 



Half & Full Marathon  CLICK HERE (full marathon to complete course twice)




Know someone who wants to come cheer you on and give out high-fives? Volunteering with the MEC events team is a blast.


Here is a link to Volunteer with MEC London.


You can also email Jill Robinson on our Community Events team if you have any questions at all. All volunteers receive a free entry to an MEC RACE. 


We’ll have live unofficial live race results at Speed River Timing. Official standings will be posted on the timing site within two business days of the event. Be sure to check back!

We’ll be giving out medals to the top three male and female finishers in each distance category (no age categories awards).



Race photos will be taken on location as an extra! These awesome pictures will be posted the Wednesday following the race day. Click here to see our photos on our FLICKR page. 



Nuun at MEC Races 


Nuun's flagship hydration product, Active, is packed full of four key electrolytes meant to dial in on optimal hydration yet is low in sugar. When your body needs it the most, Nuun Active is the best way to re-hydrate or pre-hydrate! All water stations will be equipped with MEC’s electrolyte partner Nuun Hydration. train with Nuun Hydration products



Want more? See the full MEC Race Series or click on a race below.