ST JUDE MEMPHIS MARATHON HALF MARATHON 2025

Marda Isbell

North Little Rock, AR

Bib: 12572 F

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 6843

Top 15%

Gender (Female)

#0 / 3868

Top 8%

Masters (Masters Women)

#0 / 1487

Top 6%

Division (F40-44)

#0 / 397

Top 11%

Race Day Weather

35°/25°F

mist

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Mile 5 · 261 ft

Start

0:00

Race begins

258 ft elev

5K· 3.11 mi

8:42/mi

27:03

↑ 118 ft↓ 72 ft0.3% grade

304 ft elev

10K· 6.21 mi

8:32/mi

53:34

↑ 105 ft↓ 119 ft

290 ft elev

6:52/mi

1:05:50

↑ 35 ft↓ 76 ft0.4% grade

245 ft elev

10M

9:05/mi

1:24:00

↑ 45 ft↓ 35 ft

254 ft elev

11M

9:22/mi

1:33:22

↑ 29 ft↓ 24 ft

260 ft elev

Finish· 13.11 mi

10:10/mi

1:54:49

↑ 73 ft↓ 70 ft

262 ft elev

Course Elevation

407ft

Total climb

79ft

Range

237 to 316 ft

403ft

Total descent

About the height of a seven-story building

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The Course

Half Splits

1st Half· via 10K

53:348:37 /mi⚡ faster

2nd Half

1:01:158:53 /mi+14.3%

Positive split — 14.3% slower in the second half

AI Race Performance Report

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	27:03	8:42	3.11 mi	27:03	8:42	-
10K	53:34	8:37	3.10 mi	26:31	8:32	-0:10
8M	1:05:50	8:14	1.79 mi	12:16	6:52	-1:40
10M	1:24:00	8:24	2.00 mi	18:10	9:05	+2:13
11M	1:33:22	8:29	1.00 mi	9:22	9:22	+0:17
Finish(13.11 mi)	1:54:49	8:46	2.11 mi	21:27	10:10	+0:48

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Checkpoints & Pacing

Pace Line

Fastest Pace

6:52 /mi

Average Pace

8:46 /mi

Slowest Pace

10:10 /mi

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Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

38:47

34% of race

Time at Steady Pace

54:35

48% of race

Time at Slower Pace

21:27

19% of race

Average Pace: 8:45 /mi

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Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

Heatmap

0mi3.3mi6.6mi9.8mi13.1mi

Pace:

Faster

Steady

Slower

Checkpoint and Segment Rankings

Checkpoint	Seg. Dist	Overall	Females	F40-44	Seg. Overall	Seg. Females	Seg. F40-44
5K	3.11 mi	1051	334	334	1051	334	334
10K	3.10 mi	968+83	304+30	304+30	912	279	279
8M	1.79 mi	942+26	295+9	295+9	924	268	268
10M	2.00 mi	968-26	304-9	304-9	1106	349	349
11M	1.00 mi	1000-32	314-10	314-10	1273	417	417
Finish(13.11 mi)	2.11 mi	1039-39	327-13	327-13	1335	481	481

481

Passing Analysis

No position changes recorded for this athlete.

All Results

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Public Race Data

Enhanced athlete results built from publicly available data.

Race managed by

ALSAC / St. Jude Children's Research Hospital

Race timed by

Sportstats