Rock'in Santa Half Marathon

Knoxville, TN, USA · December 12, 2026
partly-cloudy-day38°·45° high·Light·Dry
10
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Rock'in Santa Half Marathon race day weather

partly-cloudy-day
38°at start
50° high
Light
Dry
Your goal
0:00:00

Cool start, gradual warm-up

Runners will face a temperature rise from 38°F at the start to 45°F by the finish. With light winds under 8 mph, there will be minimal impact on performance, although headwinds will challenge runners in Miles 1, 5, 9, and 13. Given the cool conditions, runners should dress in layers and consider a conservative pace in the first half to conserve energy for the rolling terrain.

Race day forecast available in 18 days
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Pace Calculator

13.1mi
0:00:00
HH:MM:SS
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Common Goals:

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Rock'in Santa Half Marathon route and elevation

The Rock'in Santa Half Marathon course has about 786 ft (240 m) of climbing and 785 ft (239 m) of descent, and finishes near the elevation it starts. It is hillier than 90% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time. The hardest mile is mile 7, with 126 ft (38 m) of climbing and a 1.9% average grade.

Biggest climbs

  • Miles 2.1 to 2.6: climbs about 105 ft (32 m).
  • Miles 6.4 to 7: climbs about 115 ft (35 m).
  • Miles 10.7 to 11.3: climbs about 120 ft (37 m).

What the hills cost

  • 1:45 on a flat course is about 1:46 here (1 minute slower).
  • 2:00 on a flat course is about 2:02 here (2 minutes slower).
  • 2:15 on a flat course is about 2:17 here (2 minutes 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 1:45, 2:00 or 2:15 finish
The Rock'in Santa Half Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent1:452:002:15
125 ft114 ft7:348:389:43
248 ft38 ft7:589:0710:15
3102 ft47 ft8:219:3310:45
486 ft39 ft8:179:2810:39
534 ft101 ft7:398:449:49
647 ft74 ft7:478:5410:01
7126 ft28 ft8:439:5811:13
832 ft90 ft7:408:469:51
983 ft79 ft7:569:0310:12
1029 ft91 ft7:398:459:51
1185 ft27 ft8:239:3510:46
1270 ft97 ft7:478:5410:00
1390 ft46 ft8:169:2610:38
Last 0.115 ft2 ft1:001:091:17

Explore the Rock'in Santa Half Marathon course with the weather and your pace along the route, or compare it with other races.

Race Plan

Get your personalized Rock'in Santa Half Marathon race plan

A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

Race Pace
Weather Splits
Nutrition
Gear & Packing
T-Minus
Carb Tracker
Spectator Guide
Race Band

About the Rock'in Santa Half Marathon

The Rock'in Santa Half Marathon is a December race at Victor Ashe Park in Knoxville, Tennessee, run on the Saturday in mid-December with a 5K and a three-person half marathon relay. The half marathon is three loops of the park's greenway, each about 4.4 miles, with Christmas rock music played at the aid stations that the course passes nine times. Runners have four hours to finish, and proceeds benefit the Sunshine Ambassadors, a dance program for people with disabilities.

Race weekend

Saturday, December 12
9:00 AMHalf Marathon (13.1 mi)
9:00 AMHalf Marathon Relay (13.1 mi)
9:15 AM5K (3.1 mi)

Rock'in Santa Half Marathon FAQ

When is the 2026 Rock'in Santa Half Marathon?

The 2026 Rock'in Santa Half Marathon will be held on Saturday December 12, 2026.

What is the time limit for the Rock'in Santa Half Marathon?

The time limit for the Rock'in Santa Half Marathon is 4 hours.

What will the weather be like for the 2026 Rock'in Santa Half Marathon?

The forecast calls for a high of 52°F and a low of 35°F with a 13% chance of rain.

What is the elevation gain of the Rock'in Santa Half Marathon?

The Rock'in Santa Half Marathon course has about 786 ft (240 m) of climbing and 785 ft (239 m) of descent, and finishes near the elevation it starts.

Is the Rock'in Santa Half Marathon hilly?

Yes. It has about 60 ft (18 m) of climbing per mile. The hardest mile is mile 7, with 126 ft (38 m) of climbing and a 1.9% average grade. 2:00 on a flat course is about 2:02 here (2 minutes slower). It is hillier than 90% of the half marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Rock'in Santa Half Marathon?

Over the 5 years racecast.io has race-day weather for (2015 to 2024), it averaged 40°F at the start and 46°F by a typical finish. Rain fell during race hours in 3 of those years (2016, 2018 and 2022).

What was the hottest Rock'in Santa Half Marathon?

Of the 5 years on record, 2018 was the warmest, reaching 53°F during race hours. The coldest start was 2015, at 34°F.

What was the windiest Rock'in Santa Half Marathon?

Of the 5 years on record, 2022 was the windiest, with wind averaging 8 mph during race hours. The calmest was 2018, at 2 mph.

Rock'in Santa Half Marathon weather history

Based on 5 years of data
Avg Temp
43°F
L:40° H:46°
RunScore
10
Conditions
Rain Freq
60%
3 of 5 yrs
Wind5mph
Dew36°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2024
partly-cloudy-day
36°/47°-
10
2022
partly-cloudy-day
36°/41°Light
10
2018
cloudy
50°/53°Light
9
2016
rain
42°/44°Light
10
2015
clear-day
34°/45°-
10