Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
84°
Typical Low
52°
Chance of Rain
34%
Based on US Climate Normals data from Boulder, 3 mi from the venue.
Host City
Population
106,274
as of 2023
Elevation
5,438 ft
Nearest Airport
BJC
Rocky Mountain Metropolitan Airport · 12 mi
Major Hub
DEN
Denver International Airport · 35 mi
Time Zone
Mountain Time
From Endurance Grid
A mid-size host city. Enough lodging and amenities to keep race weekend easy, without big-city sprawl.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Run for the River 5k Boulder, put it on the calendar, and turn “someday” into a start date.
Coming Up
BRR All-Comers Summer Track & Field Series #1
Less than a mile away
Sunset Trail Running Festival
Less than a mile away
14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk
Less than a mile away
BRR All-Comers Summer Track & Field Series #2
Less than a mile away
From Endurance Grid
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
Run for the River 5k Boulder
Jun 20, 2026