The Spring Thaw
About this race
The winter's first big race is back for its 51st incredible year. The Spring Thaw is the longest continuously run race in Pennsylvania, and you get to be a part of that history when you sign up!
The Spring Thaw starts and finishes at North Park's iconic boathouse and follows counterclockwise loops around the lake with 5, 10, 15, and 20 mile race options. This race is a great training/test event for the 2026 Pittsburgh Marathon or any other spring race!
Race Start - all distances - 10:00am. Course closes at 2pm.
The GCXCPa Promise: give back with every race:
We are proud to continue to support 412 Food Rescue. CLICK HERE for full details on how to help support their mission.
Pick your distance
Running
5 Mile
10 Miles
This live race will take place from the iconic North Park Boathouse.
15 Miles
20 Miles
Typical race-day weather
Based on 6 years of Open-Meteo archive data for this event's race dates in Allison Park, plus the 3 days either side.
The sun rises at 6:56 AM and sets at 6:08 PM local time (EST) in Allison Park on February 27, 2027 — 11h 12m of daylight.
Course
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
Done this event?
If you've participated in this event, share your experience with other runners
Results — The Spring Thaw
Other races near Allison Park
Different organizers, within 40 miles, in the next three months
Haee 5k
Dirt Monster Trail Fest
Paws Against Domestic Violence Pet Walk - 10 AM to 1 PM
North Ridge Nightmare
🏃 Plan Your Next Race in Allison Park
Find upcoming events by distance:
- Allison Park 5K Races 23 races
- Allison Park Half Marathons 2 races
- Allison Park Running Calendar 2026 35 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, 37 Allison Park events
Spotted something wrong? Tell us and we'll fix it.