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BOSTON MARATHON 2025

Shannon Sullivan

MA

Bib: 27729 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 40%
Gender (Female)
#0 / 12228
Top 24%
Division (F18-39)
#0 / 5469
Top 40%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:57/mi
24:42
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:42/mi
48:38
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:30/mi
1:11:57
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:36/mi
1:35:34
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:31/mi
1:40:42
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:40/mi
1:59:18
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:51/mi
2:23:41
↑ 181↓ 1480.2%
138 ft elev
20M
8:01/mi
2:34:34
↑ 64↓ 500.2%
148 ft elev
21M
8:09/mi
2:42:43
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:44/mi
2:48:30
↑ 17↓ 861.7%
156 ft elev
23M
8:10/mi
2:58:43
↑ 23↓ 630.6%
116 ft elev
24M
7:50/mi
3:06:33
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:03/mi
3:13:26
↓ 200.3%
20 ft elev
25.2M
8:30/mi
3:16:22
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:18/mi
3:23:48
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:42
Pace7:41 /mi
2nd Half
Distance13.11 mi
Time1:43:06
Pace7:52 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:1124:427:5724:42
7:57
-
10K
6.21 mi12:06:0748:387:5023:56
7:42
-0:15
15K
9.32 mi12:29:261:11:577:4323:19
7:30
-0:12
20K
12.43 mi12:53:031:35:347:4123:37
7:36
+0:06
Half
13.11 mi12:58:111:40:427:415:08
7:31
-0:05
25K
15.53 mi13:16:471:59:187:4118:36
7:40
+0:09
30K
18.64 mi13:41:102:23:417:4224:23
7:51
+0:11
20M
20.00 mi13:52:032:34:347:4410:53
8:01
+0:10
21M
21.00 mi14:00:122:42:437:458:09
8:09
+0:08
35K
21.75 mi14:05:592:48:307:455:47
7:44
-0:25
23M
23.00 mi14:16:122:58:437:4610:13
8:10
+0:26
24M
24.00 mi14:24:023:06:337:467:50
7:50
-0:20
40K
24.85 mi14:30:553:13:267:476:53
8:03
+0:13
25.2M
25.20 mi14:33:513:16:227:482:56
8:30
+0:27
Finish
26.22 mi14:41:173:23:487:477:26
7:18
-1:12

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

7:18 /mi

Average Pace

7:47 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:37

86% of race

Time at Steady Pace

28:11

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:46 /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 mi11:42:1124:427:5724:42
7:57
#16191
10K
6.21 mi12:06:0748:387:5023:56
7:42
#15019
15K
9.32 mi12:29:261:11:577:4323:19
7:30
#13919
20K
12.43 mi12:53:031:35:347:4123:37
7:36
#13284
Half
13.11 mi12:58:111:40:427:415:08
7:31
#13203
25K
15.53 mi13:16:471:59:187:4118:36
7:40
#12852
30K
18.64 mi13:41:102:23:417:4224:23
7:51
#12336
20M
20.00 mi13:52:032:34:347:4410:53
8:01
#12137
21M
21.00 mi14:00:122:42:437:458:09
8:09
#11870
35K
21.75 mi14:05:592:48:307:455:47
7:44
#11809
23M
23.00 mi14:16:122:58:437:4610:13
8:10
#11728
24M
24.00 mi14:24:023:06:337:467:50
7:50
#11611
40K
24.85 mi14:30:553:13:267:476:53
8:03
#11538
25.2M
25.20 mi14:33:513:16:227:482:56
8:30
#11474
Finish
26.22 mi14:41:173:23:487:477:26
7:18
#11278
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi161915254525411814(Top 42%)2808(Top 23%)2808(Top 51%)
10K6.21 mi3.10 mi15019+11724559+6954559+69513928(Top 49%)3915(Top 32%)3915(Top 72%)
15K9.32 mi3.11 mi13919+11003919+6403919+64011814(Top 42%)2808(Top 23%)2808(Top 51%)
20K12.43 mi3.11 mi13284+6353595+3243595+32411640(Top 41%)2805(Top 23%)2805(Top 51%)
Half13.11 mi0.68 mi13203+813559+363559+3611977(Top 42%)2927(Top 24%)2927(Top 54%)
25K15.53 mi2.42 mi12852+3513389+1703389+17011337(Top 40%)2765(Top 23%)2765(Top 51%)
30K18.64 mi3.11 mi12336+5163178+2113178+21110291(Top 36%)2433(Top 20%)2433(Top 44%)
20M20.00 mi1.36 mi12137+1993104+743104+7410532(Top 37%)2706(Top 22%)2706(Top 49%)
21M21.00 mi1.00 mi11870+2673006+983006+988311(Top 29%)1870(Top 15%)1870(Top 34%)
35K21.75 mi0.75 mi11809+612995+112995+1110349(Top 36%)2774(Top 23%)2774(Top 51%)
23M23.00 mi1.25 mi11728+812996-12996-111132(Top 39%)3289(Top 27%)3289(Top 60%)
24M24.00 mi1.00 mi11611+1172976+202976+2010090(Top 36%)2854(Top 23%)2854(Top 52%)
40K24.85 mi0.85 mi11538+732966+102966+1010581(Top 37%)3205(Top 26%)3205(Top 59%)
25.2M25.20 mi0.35 mi11474+642953+132953+138906(Top 31%)2490(Top 20%)2490(Top 46%)
Finish26.22 mi1.02 mi11278+1962894+592894+597778(Top 27%)1976(Top 16%)1976(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11814

Females

2808

F18-39

2808

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

13928

Females

3915

F18-39

3915

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11814

Females

2808

F18-39

2808

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

11640

Females

2805

F18-39

2805

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11977

Females

2927

F18-39

2927

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11337

Females

2765

F18-39

2765

25K→30K

15.5 - 18.6 mi

Top 36%
×9story building
+181ft-148ft

Overall

10291

Females

2433

F18-39

2433

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

10532

Females

2706

F18-39

2706

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

8311

Females

1870

F18-39

1870

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

10349

Females

2774

F18-39

2774

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11132

Females

3289

F18-39

3289

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10090

Females

2854

F18-39

2854

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10581

Females

3205

F18-39

3205

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8906

Females

2490

F18-39

2490

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2story building
+22ft-21ft

Overall

7778

Females

1976

F18-39

1976

Passing Analysis

Category:
Athletes Passed
5221
Passed By
308
Net Change
+4913
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16191
5K → 10K120836+1172#16191#15019
10K → 15K11044+1100#15019#13919
15K → 20K6438+635#13919#13284
20K → Half865+81#13284#13203
Half → 25K37322+351#13203#12852
25K → 30K54630+516#12852#12336
30K → 20M22425+199#12336#12137
20M → 21M27811+267#12137#11870
21M → 35K8120+61#11870#11809
35K → 23M14665+81#11809#11728
23M → 24M14629+117#11728#11611
24M → 40K10936+73#11611#11538
40K → 25.2M7511+64#11538#11474
25.2M → Finish2026+196#11474#11278
TOTALS5221308+4913
📊

Passing Visuals

Category:
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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