Niagara Falls International Half Marathon course & pace calculator
Shares the marathon's start past Horseshoe Falls and its finish up Burning Springs Hill, with a turnaround on the Niagara Parkway about 5 km south of Chippawa. Flat along the river, with the climbing at both ends.
- Climb
- 67 m
- Descent
- 72 m
- Low – high
- 154 m – 193 m
- Terrain at 1:30
- +0:31
- Typical start
- 7°C
- Sub-1:30 needs
- 1:29:29 flat
Course time calculator
Type h:mm:ss or use the step buttons.
7°C at your start → 9°C at the finish · dew point 3°C
Heat is scored with shade WBGT from temperature and humidity, starting to cost time above about 15°C (59°F) WBGT. Slower runners lose more because they are out longer. Wind, sun and rain are not modelled.
Certified distance only. Switch on to count the metres lost to corners, crowds and aid stations.
Same effort all the way: slower up the climbs, faster down the descents.
- Flat course
- 1:29:29
- Terrain
- +0:31
- Weather
- ±0:00
- Niagara Falls finish
- 1:30:00
Average 4:16 /km on course · 4:14 /km flat
Elevation profile
67 m up, 72 m down. Hover or tap the chart for the grade and your clock time at any point.
- Climb 2%+
- Climb 0.8–2%
- Flat
- Descent 0.8–2%
- Descent 2%+
- 1Fallsview Blvd · 0.0 km
- 2Horseshoe Falls · 1.3 km
- 3Chippawa · 5.5 km
- 4Niagara Parkway turnaround · 11.0 km
- 5Burning Springs Hill · 18.6 km
- 6Convention Centre · 21.1 km
Course splits for 1:30:00
Even-effort splits with the selected weather. Climbing and descent are per split, from the smoothed profile.
| Split | Pace | Split time | Clock | Up / down |
|---|---|---|---|---|
| 1 km | 4:03 | 4:03 | 4:03 | +0 m / −39 m |
| 2 km | 4:18 | 4:18 | 8:21 | +5 m / −2 m |
| 3 km | 4:24 | 4:24 | 12:45 | +12 m / −0 m |
| 4 km | 4:19 | 4:19 | 17:04 | +6 m / −1 m |
| 5 km | 4:15 | 4:15 | 21:19 | +1 m / −1 m |
| 6 km | 4:13 | 4:13 | 25:32 | +0 m / −4 m |
| 7 km | 4:15 | 4:15 | 29:47 | +1 m / −1 m |
| 8 km | 4:14 | 4:14 | 34:02 | +0 m / −0 m |
| 9 km | 4:17 | 4:17 | 38:18 | +3 m / −0 m |
| 10 km | 4:14 | 4:14 | 42:32 | +1 m / −3 m |
| 11 km | 4:17 | 4:17 | 46:49 | +3 m / −1 m |
| 12 km | 4:14 | 4:14 | 51:03 | +1 m / −3 m |
| 13 km | 4:16 | 4:16 | 55:19 | +3 m / −1 m |
| 14 km | 4:13 | 4:13 | 59:32 | +1 m / −3 m |
| 15 km | 4:15 | 4:15 | 1:03:47 | +0 m / −0 m |
| 16 km | 4:15 | 4:15 | 1:08:02 | +1 m / −1 m |
| 17 km | 4:18 | 4:18 | 1:12:20 | +4 m / −0 m |
| 18 km | 4:15 | 4:15 | 1:16:35 | +2 m / −1 m |
| 19 km | 4:18 | 4:18 | 1:20:53 | +7 m / −6 m |
| 20 km | 4:23 | 4:23 | 1:25:15 | +10 m / −2 m |
| 21 km | 4:20 | 4:20 | 1:29:35 | +7 m / −2 m |
| Finish | 4:17 | 0:25 | 1:30:00 | +0 m / −0 m |
Race-morning weather
Air temperature and relative humidity by hour from the first wave’s 08:15 start, from 98 mornings within three days of the race date since 2011 at NIAGARA FALLS INTERNATIONAL AIRPORT, NY US. Cool and warm are about the 10th and 90th percentile mornings by heat stress. Median wind 18 km/h.
The 2026 edition introduced a new start and finish. Weather scenarios use the nearest airport, across the river in Niagara Falls, New York.
| Local time | Cool | Typical | Warm |
|---|---|---|---|
| 08:15 | 2°C · 85% | 7°C · 77% | 15°C · 73% |
| 09:15 | 3°C · 83% | 9°C · 75% | 15°C · 74% |
| 10:15 | 5°C · 80% | 9°C · 73% | 17°C · 65% |
| 11:15 | 6°C · 75% | 11°C · 60% | 18°C · 62% |
| 12:15 | 7°C · 69% | 12°C · 58% | 20°C · 51% |
| 13:15 | 6°C · 74% | 13°C · 58% | 22°C · 45% |
| 14:15 | 6°C · 82% | 12°C · 61% | 22°C · 44% |
| Date | Start | +3 hours | Peak WBGT |
|---|---|---|---|
| 2024-10-27 | 1°C · 78% | 11°C · 44% | 13°C |
| 2023-10-22 | 7°C · 73% | 7°C · 76% | 11°C |
| 2022-10-23 | 7°C · 80% | 18°C · 46% | 19°C |
Data & method
- Route: Organizer's 2026 RunGo course map (https://routes.rungoapp.com/route/i9bQAyPThU, linked from https://niagarafallsmarathon.com/half-event.html), converted to GPX. Measured at 21.07 km and scaled to 21.0975 km.
- Elevation: Copernicus GLO-30 DEM (30 m), © DLR e.V. 2010–2014 and © Airbus Defence and Space GmbH 2014–2018, provided under COPERNICUS by the European Union and ESA. Sampled every 25–50 m, with bridges set to deck height and smoothed over 200–400 m.
- Weather: hourly observations from NOAA’s Integrated Surface Database (station 72528704724).
- Small climbs on flat courses can be terrain-model noise; they add only seconds to the estimates.
Frequently asked questions
Is the Niagara Falls International Half Marathon hilly?
The course climbs about 67 m (220 ft) and descends about 72 m in total, which is gently rolling. At even effort the terrain alone changes a 1:30 flat-course half marathon by +0:31 and a 2:00 by +0:42.
What flat-course time do I need to break 1:30 at the Niagara Falls International Half Marathon?
About 1:29:29 on a flat course, assuming a typical race morning. For a sub-2 you need about 1:59:18. Switch the weather off in the calculator to see the terrain-only figure.
What is the weather usually like at the Niagara Falls International Half Marathon?
On a typical race morning it is about 7°C (45°F) at the first wave’s start and 11°C (51°F) three hours later, with a dew point near 3°C. That costs a 1:30 runner about 0:00 and a 2-hour runner about 0:00. Figures come from airport observations within three days of the race date since 2011.
How is the course-adjusted time calculated?
The course is cut into 100 m pieces. Each piece is run at your flat-course pace times a grade factor (about +3.3% per 1% uphill and −1.8% per 1% downhill) and a heat factor from shade WBGT at the time you reach it. Adding the pieces gives the course time, and the calculator works backwards from a goal the same way.