Rend Lake Marathon
Rend Lake Marathon race day weather
Cool start, warming finish
Runners will face temperatures starting at 46°F and rising to 58°F by midday, with light winds from the south at 9 mph. The humidity is moderate at 55%, so runners should consider adjusting their pace as they warm up. The toughest conditions will occur in miles 8-11 with headwinds, while miles 19-23 will benefit from a tailwind, making it crucial to strategize pacing accordingly.
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Rend Lake Marathon route and elevation
The Rend Lake Marathon course has about 1,042 ft (318 m) of climbing and 1,042 ft (318 m) of descent, and finishes near the elevation it starts. It is hillier than 55% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 9, with 108 ft (33 m) of climbing and a 1.6% average grade.
Biggest climbs
- Miles 1.8 to 2: climbs about 55 ft (16 m).
- Miles 8 to 9: climbs about 90 ft (27 m).
- Miles 14.5 to 20.5: climbs about 105 ft (31 m).
What the hills cost
- 3:30 on a flat course is about 3:31 here (1 minute slower).
- 4:00 on a flat course is about 4:01 here (1 minute slower).
- 4:30 on a flat course is about 4:31 here (1 minute slower).
Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.
Even-effort splits for a 3:30, 4:00 or 4:30 finish
| Mile | Climb | Descent | 3:30 | 4:00 | 4:30 |
|---|---|---|---|---|---|
| 1 | 52 ft | 33 ft | 8:06 | 9:16 | 10:26 |
| 2 | 96 ft | 38 ft | 8:27 | 9:39 | 10:51 |
| 3 | 62 ft | 80 ft | 7:53 | 9:01 | 10:08 |
| 4 | 49 ft | 65 ft | 7:54 | 9:01 | 10:09 |
| 5 | 50 ft | 54 ft | 7:57 | 9:05 | 10:13 |
| 6 | 46 ft | 43 ft | 7:59 | 9:07 | 10:16 |
| 7 | 52 ft | 60 ft | 7:55 | 9:04 | 10:11 |
| 8 | 51 ft | 80 ft | 7:51 | 8:58 | 10:06 |
| 9 | 108 ft | 21 ft | 8:42 | 9:56 | 11:10 |
| 10 | 46 ft | 102 ft | 7:44 | 8:51 | 9:58 |
| 11 | 50 ft | 44 ft | 8:01 | 9:09 | 10:17 |
| 12 | 49 ft | 75 ft | 7:51 | 8:58 | 10:06 |
| 13 | 17 ft | 39 ft | 7:52 | 9:00 | 10:08 |
| 14 | 63 ft | 48 ft | 8:05 | 9:15 | 10:23 |
| 15 | 59 ft | 29 ft | 8:13 | 9:22 | 10:33 |
| 16 | 12 ft | 15 ft | 7:57 | 9:06 | 10:14 |
| 17 | 21 ft | 20 ft | 7:58 | 9:06 | 10:14 |
| 18 | 31 ft | 25 ft | 8:01 | 9:10 | 10:19 |
| 19 | 26 ft | 20 ft | 8:00 | 9:09 | 10:17 |
| 20 | 20 ft | 13 ft | 8:01 | 9:10 | 10:19 |
| 21 | 40 ft | 17 ft | 8:09 | 9:19 | 10:29 |
| 22 | 44 ft | 93 ft | 7:46 | 8:52 | 9:59 |
| 23 | 43 ft | 33 ft | 8:03 | 9:12 | 10:20 |
| 24 | 16 ft | 40 ft | 7:52 | 8:59 | 10:07 |
| 25 | 64 ft | 37 ft | 8:11 | 9:21 | 10:31 |
| 26 | 24 ft | 53 ft | 7:50 | 8:57 | 10:05 |
| Last 0.2 | 10 ft | 23 ft | 1:42 | 1:57 | 2:11 |
Explore the Rend Lake Marathon course with the weather and your pace along the route, or compare it with other races.
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About the Rend Lake Marathon
Gorgeous paved paths, stunning views and rolling country roads make this course the Marathon to remember!
Rend Lake, IL, located in the heart of southern Illinois, is a natural haven for wildlife and a recreational haven for visitors. Rend Lake consists of 18,900 acres of water and 20,000 acres of land. Campers will delight in the nearly 800 sites found in 5 public campgrounds on Rend Lake. Boaters are provided access to the lake through the numerous boat ramps. Beaches, picnic sites and trails provide the perfect backdrop for outdoor fun.
The course then will take you across the lake for one of the best panoramic views in Illinois, before connecting to the bike path which passes South Sandusky Beach, the Marina, Rend Lake Visitors Center, the amazing spillway and dozens of other spectacular views of Rend Lake. From there you will continue on country roads winding through beautiful vistas including both Lake Hamilton and Lake Benton. Finally you will get back on the bike path and end at the stunning North Marcum Beach.
We can't wait to see you finish your next great adventure with us!