Foundation 5k to benefit Speed of Light - The ASTRO Foundation
About the Event
Embark on the sunrise journey for health and innovation with the Foundation 5K, an inspiring run or walk that supports groundbreaking research in radiation oncology. Set to take place on Monday, September 28, this year's event promises a vibrant morning experience along Boston’s scenic routes during the ASTRO Annual Meeting. Participants will traverse iconic sites of Boston for a 5k route filled with historical landmarks and bustling energy. Whether you're a seasoned runner or prefer a more leisurely pace, the Foundation 5K welcomes all to join in this non-competitive event that celebrates community spirit while raising funds for Speed of Light – The ASTRO Foundation. Speed of Light accelerates bold ideas and innovative research aimed at improving access to top-tier treatments for every individual. By participating in the Foundation 5K, you contribute directly to advancing critical work in radiation medicine, ensuring better health outcomes for patients around the world. Registration offers two options: a group run on Monday, September 28, starting at 7:00 AM, or a virtual 5k where participants can complete their own route at any time. All registrants will receive exclusive SWAG and access to curated routes highlighting Boston's most famous sites via the event’s Strava page. Pricing tiers are designed to accommodate all budgets: - $40 from May 14 – June 25 - $45 from June 26 – August 13 - $50 until race day on September 28 Join as an individual or team, and your contribution will help propel vital research forward. The event is casual in nature; no official timing is provided, and runners should adhere to all traffic laws. For more information about Speed of Light – The ASTRO Foundation’s mission and achievements, visit [SpeedofLightFoundation.org](http://speedoflightfoundation.org). Connect with the foundation on social media platforms like X (@SpeedofLightFdn), Facebook (Speed of Light Foundation), and LinkedIn (Speed of Light Foundation) to stay updated. The Foundation 5K is your chance to make a meaningful impact while enjoying Boston’s picturesque scenery. Don’t miss out—register now!
Races Offered
IN-PERSON 5K
Sep 28, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
30 days remaining
sell
$50.00
VIRTUAL 5K
Sep 28, 2026
straighten
Distance —
5K
terrain
Type —
Running
timer
30 days remaining
sell
$50.00
Weather History
These values represent the 3-year monthly averages for September in Boston.
thermostatTemperature
14.5° / 22.9°
wb_sunnyFeels like
13.6° / 22.1°
light_mode
Avg sunshine hours
9h 6m
water_drop
Avg rainfall
3.7 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
10.5 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.0)
humidity_mid
Humidity
77.1%
wb_twilight
Sunrise
06:25
nightlight
Sunset
18:52
About Boston
Learn more about the host city, Boston.
A city of history and tradition, Boston offers a proud legacy of culture, education, and numerous sporting championships. The "shining city on a hill"s independent spirit has been displayed to the world ever since colonists were angry over a British tax on their beloved tea and dumped shiploads of it into the harbor in protest.