From the Organizer
RACE LOCATION - CITY PARK / FOSTERS PLACE
FULL DETAILS CAN BE FOUND ON OUR WEBSITE AT https://www.slackerhalfmarathon.com/
Events
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
75°
Typical Low
45°
Chance of Rain
36%
Based on US Climate Normals data from Georgetown.
Host City
Population
1,082
as of 2023
Elevation
8,518 ft
Nearest Airport
BJC
Rocky Mountain Metropolitan Airport · 34 mi
Major Hub
DEN
Denver International Airport · 55 mi
Time Zone
Mountain Time
From Endurance Grid
A small town race. Lodging near the start could be limited, so book early.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at Slacker Half Marathon-Relay-4-Mile Races, put it on the calendar, and turn “someday” into a start date.
19
Days to train
Coming Up
Session Series #3 - Floyd Hill
14 miles away
Blue Sky Ascent & Round Trip (formerly the Mt. Evans Ascent)
6 miles away
Georgetown SUP-Athlon
Less than a mile away
Rendezvous Run for Independence
14 miles 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.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
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)
Slacker Half Marathon-Relay-4-Mile Races
Jun 27, 2026