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BOSTON MARATHON 2025

Serena Sullivan

Bib: 9831•F

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 26%
Gender (Female)
#0 / 12228
Top 9%
Masters (Masters Women)
#0 / 6759
Top 3%
Division (F40-44)
#0 / 1718
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:22
Rank: #6915
Start → 5K
21:22 | 6:53/mi
10K· 6.21 mi
42:49
Rank: #7093 (-178)
5K → 10K
21:27 | 6:54/mi
15K· 9.32 mi
1:04:28
Rank: #7216 (-123)
10K → 15K
21:39 | 6:58/mi
20K· 12.43 mi
1:26:24
Rank: #7191 (+25)
15K → 20K
21:56 | 7:04/mi
Half· 13.11 mi
1:31:07
Rank: #7187 (+4)
20K → Half
4:43 | 6:55/mi
25K· 15.53 mi
1:48:31
Rank: #7173 (+14)
Half → 25K
17:24 | 7:11/mi
30K· 18.64 mi
2:12:08
Rank: #7270 (-97)
25K → 30K
23:37 | 7:36/mi
20M
2:22:47
Rank: #7330 (-60)
30K → 20M
10:39 | 7:50/mi
21M
2:31:13
Rank: #7394 (-64)
20M → 21M
8:26 | 8:26/mi
35K· 21.75 mi
2:36:53
Rank: #7406 (-12)
21M → 35K
5:40 | 7:34/mi
23M
2:46:49
Rank: #7484 (-78)
35K → 23M
9:56 | 7:56/mi
24M
2:54:32
Rank: #7515 (-31)
23M → 24M
7:43 | 7:43/mi
40K· 24.85 mi
3:01:04
Rank: #7467 (+48)
24M → 40K
6:32 | 7:38/mi
25.2M
3:03:54
Rank: #7446 (+21)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:11:14
Rank: #7396 (+50)
25.2M → Finish
7:20 | 7:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:07
Pace6:57 /mi
2nd Half
Distance13.11 mi
Time1:40:07
Pace7:38 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0021:226:5321:22
6:53
-
10K
6.21 mi11:08:2742:496:5321:27
6:54
+0:01
15K
9.32 mi11:30:061:04:286:5521:39
6:58
+0:04
20K
12.43 mi11:52:021:26:246:5721:56
7:04
+0:06
Half
13.11 mi11:56:451:31:076:574:43
6:55
-0:09
25K
15.53 mi12:14:091:48:316:5917:24
7:11
+0:16
30K
18.64 mi12:37:462:12:087:0523:37
7:36
+0:25
20M
20.00 mi12:48:252:22:477:0810:39
7:50
+0:14
21M
21.00 mi12:56:512:31:137:128:26
8:26
+0:36
35K
21.75 mi13:02:312:36:537:135:40
7:34
-0:52
23M
23.00 mi13:12:272:46:497:159:56
7:56
+0:22
24M
24.00 mi13:20:102:54:327:167:43
7:43
-0:13
40K
24.85 mi13:26:423:01:047:176:32
7:38
-0:05
25.2M
25.20 mi13:29:323:03:547:182:50
8:13
+0:35
Finish
26.22 mi13:36:523:11:147:187:20
7:12
-1:01

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

6:53 /mi

Average Pace

7:18 /mi

Slowest Pace

8:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:51

61% of race

Time at Steady Pace

43:32

23% of race

Time at Slower Pace

31:51

17% of race

Average Pace: 7:18 /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 mi10:47:0021:226:5321:22
6:53
#6915
10K
6.21 mi11:08:2742:496:5321:27
6:54
#7093
15K
9.32 mi11:30:061:04:286:5521:39
6:58
#7216
20K
12.43 mi11:52:021:26:246:5721:56
7:04
#7191
Half
13.11 mi11:56:451:31:076:574:43
6:55
#7187
25K
15.53 mi12:14:091:48:316:5917:24
7:11
#7173
30K
18.64 mi12:37:462:12:087:0523:37
7:36
#7270
20M
20.00 mi12:48:252:22:477:0810:39
7:50
#7330
21M
21.00 mi12:56:512:31:137:128:26
8:26
#7394
35K
21.75 mi13:02:312:36:537:135:40
7:34
#7406
23M
23.00 mi13:12:272:46:497:159:56
7:56
#7484
24M
24.00 mi13:20:102:54:327:167:43
7:43
#7515
40K
24.85 mi13:26:423:01:047:176:32
7:38
#7467
25.2M
25.20 mi13:29:323:03:547:182:50
8:13
#7446
Finish
26.22 mi13:36:523:11:147:187:20
7:12
#7396
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi69156636637440(Top 26%)851(Top 7%)851(Top 50%)
10K6.21 mi3.10 mi7093-178716-53716-537277(Top 26%)772(Top 6%)772(Top 45%)
15K9.32 mi3.11 mi7216-123755-39755-397440(Top 26%)851(Top 7%)851(Top 50%)
20K12.43 mi3.11 mi7191+25761-6761-67267(Top 26%)859(Top 7%)859(Top 50%)
Half13.11 mi0.68 mi7187+4763-2763-27074(Top 25%)799(Top 7%)799(Top 47%)
25K15.53 mi2.42 mi7173+14779-16779-167446(Top 26%)1018(Top 8%)1018(Top 59%)
30K18.64 mi3.11 mi7270-97853-74853-748466(Top 30%)1580(Top 13%)1580(Top 92%)
20M20.00 mi1.36 mi7330-60898-45898-459286(Top 33%)2104(Top 17%)2104(Top 122%)
21M21.00 mi1.00 mi7394-64957-59957-5910059(Top 35%)2625(Top 21%)2625(Top 153%)
35K21.75 mi0.75 mi7406-12986-29986-299167(Top 32%)2189(Top 18%)2189(Top 127%)
23M23.00 mi1.25 mi7484-781052-661052-669538(Top 34%)2504(Top 20%)2504(Top 146%)
24M24.00 mi1.00 mi7515-311103-511103-519219(Top 32%)2417(Top 20%)2417(Top 141%)
40K24.85 mi0.85 mi7467+481118-151118-157721(Top 27%)1847(Top 15%)1847(Top 108%)
25.2M25.20 mi0.35 mi7446+211122-41122-47194(Top 25%)1710(Top 14%)1710(Top 100%)
Finish26.22 mi1.02 mi7396+501133-111133-117044(Top 25%)1662(Top 14%)1662(Top 97%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7440

Females

851

F40-44

851

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7277

Females

772

F40-44

772

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7440

Females

851

F40-44

851

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7267

Females

859

F40-44

859

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

7074

Females

799

F40-44

799

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7446

Females

1018

F40-44

1018

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8466

Females

1580

F40-44

1580

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

9286

Females

2104

F40-44

2104

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

10059

Females

2625

F40-44

2625

21M→35K

21.0 - 21.8 mi

Top 32%
×7stories
+17ft-86ft

Overall

9167

Females

2189

F40-44

2189

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9538

Females

2504

F40-44

2504

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

9219

Females

2417

F40-44

2417

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7721

Females

1847

F40-44

1847

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7194

Females

1710

F40-44

1710

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2stories
+22ft-21ft

Overall

7044

Females

1662

F40-44

1662

Passing Analysis

Category:
Athletes Passed
1223
Passed By
1704
Net Change
-481
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6915
5K → 10K130308-178#6915#7093
10K → 15K103226-123#7093#7216
15K → 20K149124+25#7216#7191
20K → Half2016+4#7191#7187
Half → 25K122108+14#7187#7173
25K → 30K147244-97#7173#7270
30K → 20M83143-60#7270#7330
20M → 21M57121-64#7330#7394
21M → 35K5466-12#7394#7406
35K → 23M72150-78#7406#7484
23M → 24M6293-31#7484#7515
24M → 40K9143+48#7515#7467
40K → 25.2M4019+21#7467#7446
25.2M → Finish9343+50#7446#7396
TOTALS12231704-481
📊

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