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BOSTON MARATHON 2025

Shannon Shillinglaw

Bib: 17432•F

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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
26:46
Rank: #20547
Start → 5K
26:46 | 8:37/mi
10K· 6.21 mi
54:50
Rank: #21580 (-1033)
5K → 10K
28:04 | 9:02/mi
15K· 9.32 mi
1:23:52
Rank: #22271 (-691)
10K → 15K
29:02 | 9:21/mi
20K· 12.43 mi
1:53:44
Rank: #22591 (-320)
15K → 20K
29:52 | 9:37/mi
Half· 13.11 mi
1:59:50
Rank: #22532 (+59)
20K → Half
6:06 | 8:56/mi
25K· 15.53 mi
2:21:49
Rank: #22149 (+383)
Half → 25K
21:59 | 9:04/mi
30K· 18.64 mi
2:51:05
Rank: #21659 (+490)
25K → 30K
29:16 | 9:25/mi
20M
3:03:37
Rank: #21375 (+284)
30K → 20M
12:32 | 9:13/mi
21M
3:13:25
Rank: #21172 (+203)
20M → 21M
9:48 | 9:48/mi
35K· 21.75 mi
3:20:12
Rank: #21051 (+121)
21M → 35K
6:47 | 9:04/mi
23M
3:31:40
Rank: #20836 (+215)
35K → 23M
11:28 | 9:09/mi
24M
3:40:41
Rank: #20706 (+130)
23M → 24M
9:01 | 9:01/mi
40K· 24.85 mi
3:48:27
Rank: #20585 (+121)
24M → 40K
7:46 | 9:05/mi
25.2M
3:51:48
Rank: #20530 (+55)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
4:00:24
Rank: #20413 (+117)
25.2M → Finish
8:36 | 8:26/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:59:50
Pace9:08 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:00:34
Pace9:12 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1026:468:3726:46
8:37
-
10K
6.21 mi11:52:1454:508:4928:04
9:02
+0:25
15K
9.32 mi12:21:161:23:529:0029:02
9:21
+0:19
20K
12.43 mi12:51:081:53:449:0929:52
9:37
+0:16
Half
13.11 mi12:57:141:59:509:086:06
8:56
-0:41
25K
15.53 mi13:19:132:21:499:0821:59
9:04
+0:08
30K
18.64 mi13:48:292:51:059:1129:16
9:25
+0:21
20M
20.00 mi14:01:013:03:379:1112:32
9:13
-0:12
21M
21.00 mi14:10:493:13:259:139:48
9:48
+0:35
35K
21.75 mi14:17:363:20:129:126:47
9:04
-0:44
23M
23.00 mi14:29:043:31:409:1211:28
9:09
+0:05
24M
24.00 mi14:38:053:40:419:129:01
9:01
-0:08
40K
24.85 mi14:45:513:48:279:117:46
9:05
+0:04
25.2M
25.20 mi14:49:123:51:489:123:21
9:43
+0:38
Finish
26.22 mi14:57:484:00:249:118:36
8:26
-1:17

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

8:26 /mi

Average Pace

9:11 /mi

Slowest Pace

9:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:05

58% of race

Time at Steady Pace

1:41:19

42% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:10 /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 mi11:24:1026:468:3726:46
8:37
#20547
10K
6.21 mi11:52:1454:508:4928:04
9:02
#21580
15K
9.32 mi12:21:161:23:529:0029:02
9:21
#22271
20K
12.43 mi12:51:081:53:449:0929:52
9:37
#22591
Half
13.11 mi12:57:141:59:509:086:06
8:56
#22532
25K
15.53 mi13:19:132:21:499:0821:59
9:04
#22149
30K
18.64 mi13:48:292:51:059:1129:16
9:25
#21659
20M
20.00 mi14:01:013:03:379:1112:32
9:13
#21375
21M
21.00 mi14:10:493:13:259:139:48
9:48
#21172
35K
21.75 mi14:17:363:20:129:126:47
9:04
#21051
23M
23.00 mi14:29:043:31:409:1211:28
9:09
#20836
24M
24.00 mi14:38:053:40:419:129:01
9:01
#20706
40K
24.85 mi14:45:513:48:279:117:46
9:05
#20585
25.2M
25.20 mi14:49:123:51:489:123:21
9:43
#20530
Finish
26.22 mi14:57:484:00:249:118:36
8:26
#20413
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi205477835783523336(Top 82%)9281(Top 76%)9281(Top 170%)
10K6.21 mi3.10 mi21580-10338378-5438378-54322523(Top 79%)8877(Top 73%)8877(Top 162%)
15K9.32 mi3.11 mi22271-6918738-3608738-36023336(Top 82%)9281(Top 76%)9281(Top 170%)
20K12.43 mi3.11 mi22591-3208902-1648902-16423253(Top 82%)9275(Top 76%)9275(Top 170%)
Half13.11 mi0.68 mi22532+598880+228880+2221585(Top 76%)8354(Top 68%)8354(Top 153%)
25K15.53 mi2.42 mi22149+3838685+1958685+19520218(Top 71%)7657(Top 63%)7657(Top 140%)
30K18.64 mi3.11 mi21659+4908436+2498436+24919626(Top 69%)7461(Top 61%)7461(Top 136%)
20M20.00 mi1.36 mi21375+2848310+1268310+12617929(Top 63%)6678(Top 55%)6678(Top 122%)
21M21.00 mi1.00 mi21172+2038214+968214+9617509(Top 62%)6545(Top 54%)6545(Top 120%)
35K21.75 mi0.75 mi21051+1218163+518163+5118607(Top 66%)7261(Top 59%)7261(Top 133%)
23M23.00 mi1.25 mi20836+2158072+918072+9117169(Top 60%)6547(Top 54%)6547(Top 120%)
24M24.00 mi1.00 mi20706+1308019+538019+5317497(Top 62%)6774(Top 55%)6774(Top 124%)
40K24.85 mi0.85 mi20585+1217972+477972+4716822(Top 59%)6502(Top 53%)6502(Top 119%)
25.2M25.20 mi0.35 mi20530+557947+257947+2515800(Top 56%)6011(Top 49%)6011(Top 110%)
Finish26.22 mi1.02 mi20413+1177898+497898+4915881(Top 56%)5970(Top 49%)5970(Top 109%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23336

Females

9281

F18-39

9281

5K→10K

3.1 - 6.2 mi

Top 79%
×5stories
+79ft-138ft

Overall

22523

Females

8877

F18-39

8877

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23336

Females

9281

F18-39

9281

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23253

Females

9275

F18-39

9275

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21585

Females

8354

F18-39

8354

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

20218

Females

7657

F18-39

7657

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19626

Females

7461

F18-39

7461

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

17929

Females

6678

F18-39

6678

20M→21M

20.0 - 21.0 mi

Top 62%
×8stories
+106ft-24ft

Overall

17509

Females

6545

F18-39

6545

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

18607

Females

7261

F18-39

7261

35K→23M

21.8 - 23.0 mi

Top 60%
×5stories
+23ft-63ft

Overall

17169

Females

6547

F18-39

6547

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17497

Females

6774

F18-39

6774

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16822

Females

6502

F18-39

6502

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15800

Females

6011

F18-39

6011

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2stories
+22ft-21ft

Overall

15881

Females

5970

F18-39

5970

Passing Analysis

Category:
Athletes Passed
2472
Passed By
2338
Net Change
+134
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20547
5K → 10K441077-1033#20547#21580
10K → 15K62753-691#21580#22271
15K → 20K86406-320#22271#22591
20K → Half689+59#22591#22532
Half → 25K39714+383#22532#22149
25K → 30K51121+490#22149#21659
30K → 20M2862+284#21659#21375
20M → 21M21310+203#21375#21172
21M → 35K13110+121#21172#21051
35K → 23M2183+215#21051#20836
23M → 24M1399+130#20836#20706
24M → 40K13312+121#20706#20585
40K → 25.2M572+55#20585#20530
25.2M → Finish12710+117#20530#20413
TOTALS24722338+134
📊

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