Solar 5k/15k
About this race
Welcome to the 13th Solar 5k/15k. (formerly the Polar Vortex)
Team Brunazzi Event's low key summer race.
Registration: 7am-8:00am
Awards: Top 3 M & F overall, masters M/F, top 3 in each age group: 10 and under,11-14,15-19,20-24,25-29,30-34,35-39, 40-44,45-49,50-54,55-59,60-64,65-69,70+ (no duplications, medals will not be mailed)
Are you a cross country coach looking for a race for your team? Ask us about special cross country team pricing. (Middle/High School)
Course: Flat rails to trails trail on crushed limestone
Water Stops: Mile 1.55 at the 5k turn around and mile 4.66 at the 15k turn around.
Proceeds: Elizabeth Forward Meals on Wheels
Please no headphones or pets.
Sanctioned by USATF.
Race Refund & Transfer Policy (effective 01-01-2016)
Team Brunazzi Events LLC has a zero refund policy.
You may transfer race or distance at any time before the race. You may NOT change distances after the race has started. Please email TBE at Teambrunazzi@gmail.com with your transfer request. You will have to pay any additional amounts associated with the change.
Shirt Policy (effective 01-01-2016)
Preregistered runners receive a shirt if they sign up by a specified date when the shirts are ordered. After that extra shirts are first come, first serve.
After a race, shirts of runners that did not show up will be given to those runners that signed up race day. If you want your shirt but cannot make the race, please have another runner pick yours up.
No shirts will be ordered after the race. No shirts will be mailed.
Pick your distance
Running
5k
15k
Run ONLY.
Typical race-day weather
Based on 13 years of historical conditions on this event's race dates in Boston.
Course
Route map and elevation profile
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Other races near Boston
Different organizers, within 40 miles, in the next three months
Harvest 5k/10k/Half Marathon
Yough-n-Roll
Brendan's Angels In the Infield Monster Mash 5k
Mother of Mercy's Howl-o-ween Spooktacular 5k Walk/Run and Kids 1 Mile Fun Run
🏃 Plan Your Next Race in Boston
Find upcoming events by distance:
- Boston 5K Races 2 races
- Boston Running Calendar 2026 2 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 3 Boston events
Spotted something wrong? Tell us and we'll fix it.