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BOSTON MARATHON 2025

Stacey Middlebrooks

Bib: 19286•F

GA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 48%
Gender (Female)
#0 / 12228
Top 33%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:07
Rank: #14490
Start → 5K
24:07 | 7:46/mi
10K· 6.21 mi
48:21
Rank: #14607 (-117)
5K → 10K
24:14 | 7:48/mi
15K· 9.32 mi
1:12:38
Rank: #14566 (+41)
10K → 15K
24:17 | 7:49/mi
20K· 12.43 mi
1:37:20
Rank: #14511 (+55)
15K → 20K
24:42 | 7:57/mi
Half· 13.11 mi
1:42:37
Rank: #14455 (+56)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
2:01:53
Rank: #14278 (+177)
Half → 25K
19:16 | 7:57/mi
30K· 18.64 mi
2:27:52
Rank: #14138 (+140)
25K → 30K
25:59 | 8:22/mi
20M
2:39:15
Rank: #14008 (+130)
30K → 20M
11:23 | 8:23/mi
21M
2:48:20
Rank: #13971 (+37)
20M → 21M
9:05 | 9:05/mi
35K· 21.75 mi
2:54:16
Rank: #13869 (+102)
21M → 35K
5:56 | 7:56/mi
23M
3:04:43
Rank: #13770 (+99)
35K → 23M
10:27 | 8:21/mi
24M
3:12:49
Rank: #13675 (+95)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:19:56
Rank: #13605 (+70)
24M → 40K
7:07 | 8:19/mi
25.2M
3:23:08
Rank: #13594 (+11)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:31:19
Rank: #13570 (+24)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:37
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:48:42
Pace8:18 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2724:077:4624:07
7:46
-
10K
6.21 mi11:39:4148:217:4724:14
7:48
+0:02
15K
9.32 mi12:03:581:12:387:4824:17
7:49
+0:01
20K
12.43 mi12:28:401:37:207:5024:42
7:57
+0:08
Half
13.11 mi12:33:571:42:377:505:17
7:45
-0:12
25K
15.53 mi12:53:132:01:537:5119:16
7:57
+0:12
30K
18.64 mi13:19:122:27:527:5625:59
8:22
+0:25
20M
20.00 mi13:30:352:39:157:5811:23
8:23
+0:01
21M
21.00 mi13:39:402:48:208:019:05
9:05
+0:42
35K
21.75 mi13:45:362:54:168:015:56
7:56
-1:09
23M
23.00 mi13:56:033:04:438:0210:27
8:21
+0:25
24M
24.00 mi14:04:093:12:498:028:06
8:06
-0:15
40K
24.85 mi14:11:163:19:568:037:07
8:19
+0:13
25.2M
25.20 mi14:14:283:23:088:043:12
9:17
+0:58
Finish
26.22 mi14:22:393:31:198:048:11
8:02
-1:15

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:45 /mi

Average Pace

8:04 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:02

94% of race

Time at Steady Pace

9:05

4% of race

Time at Slower Pace

3:12

2% of race

Average Pace: 8:04 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:15:2724:077:4624:07
7:46
#14490
10K
6.21 mi11:39:4148:217:4724:14
7:48
#14607
15K
9.32 mi12:03:581:12:387:4824:17
7:49
#14566
20K
12.43 mi12:28:401:37:207:5024:42
7:57
#14511
Half
13.11 mi12:33:571:42:377:505:17
7:45
#14455
25K
15.53 mi12:53:132:01:537:5119:16
7:57
#14278
30K
18.64 mi13:19:122:27:527:5625:59
8:22
#14138
20M
20.00 mi13:30:352:39:157:5811:23
8:23
#14008
21M
21.00 mi13:39:402:48:208:019:05
9:05
#13971
35K
21.75 mi13:45:362:54:168:015:56
7:56
#13869
23M
23.00 mi13:56:033:04:438:0210:27
8:21
#13770
24M
24.00 mi14:04:093:12:498:028:06
8:06
#13675
40K
24.85 mi14:11:163:19:568:037:07
8:19
#13605
25.2M
25.20 mi14:14:283:23:088:043:12
9:17
#13594
Finish
26.22 mi14:22:393:31:198:048:11
8:02
#13570
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi144904208420814521(Top 51%)4322(Top 35%)4322(Top 79%)
10K6.21 mi3.10 mi14607-1174304-964304-9614820(Top 52%)4439(Top 36%)4439(Top 81%)
15K9.32 mi3.11 mi14566+414295+94295+914521(Top 51%)4322(Top 35%)4322(Top 79%)
20K12.43 mi3.11 mi14511+554295429514542(Top 51%)4385(Top 36%)4385(Top 80%)
Half13.11 mi0.68 mi14455+564270+254270+2513839(Top 49%)3978(Top 33%)3978(Top 73%)
25K15.53 mi2.42 mi14278+1774202+684202+6813498(Top 48%)3938(Top 32%)3938(Top 72%)
30K18.64 mi3.11 mi14138+1404183+194183+1913921(Top 49%)4319(Top 35%)4319(Top 79%)
20M20.00 mi1.36 mi14008+1304148+354148+3513013(Top 46%)3984(Top 33%)3984(Top 73%)
21M21.00 mi1.00 mi13971+374149-14149-114015(Top 49%)4637(Top 38%)4637(Top 85%)
35K21.75 mi0.75 mi13869+1024116+334116+3311829(Top 42%)3568(Top 29%)3568(Top 65%)
23M23.00 mi1.25 mi13770+994100+164100+1612341(Top 43%)3924(Top 32%)3924(Top 72%)
24M24.00 mi1.00 mi13675+954078+224078+2211933(Top 42%)3772(Top 31%)3772(Top 69%)
40K24.85 mi0.85 mi13605+704065+134065+1312327(Top 43%)4096(Top 33%)4096(Top 75%)
25.2M25.20 mi0.35 mi13594+114066-14066-113386(Top 47%)4695(Top 38%)4695(Top 86%)
Finish26.22 mi1.02 mi13570+244078-124078-1213101(Top 46%)4489(Top 37%)4489(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

14521

Females

4322

F18-39

4322

5K→10K

3.1 - 6.2 mi

Top 52%
×5stories
+79ft-138ft

Overall

14820

Females

4439

F18-39

4439

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

14521

Females

4322

F18-39

4322

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

14542

Females

4385

F18-39

4385

20K→Half

12.4 - 13.1 mi

Top 49%
×2stories
+19ft-37ft

Overall

13839

Females

3978

F18-39

3978

Half→25K

13.1 - 15.5 mi

Top 48%
×4stories
+66ft-88ft

Overall

13498

Females

3938

F18-39

3938

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13921

Females

4319

F18-39

4319

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

13013

Females

3984

F18-39

3984

20M→21M

20.0 - 21.0 mi

Top 49%
×8stories
+106ft-24ft

Overall

14015

Females

4637

F18-39

4637

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11829

Females

3568

F18-39

3568

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

12341

Females

3924

F18-39

3924

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11933

Females

3772

F18-39

3772

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12327

Females

4096

F18-39

4096

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13386

Females

4695

F18-39

4695

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

13101

Females

4489

F18-39

4489

Passing Analysis

Category:
Athletes Passed
2278
Passed By
1358
Net Change
+920
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14490
5K → 10K243360-117#14490#14607
10K → 15K214173+41#14607#14566
15K → 20K225170+55#14566#14511
20K → Half6913+56#14511#14455
Half → 25K25073+177#14455#14278
25K → 30K318178+140#14278#14138
30K → 20M18151+130#14138#14008
20M → 21M12386+37#14008#13971
21M → 35K11715+102#13971#13869
35K → 23M15859+99#13869#13770
23M → 24M13843+95#13770#13675
24M → 40K11444+70#13675#13605
40K → 25.2M4231+11#13605#13594
25.2M → Finish8662+24#13594#13570
TOTALS22781358+920
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing