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BOSTON MARATHON 2025

Margaret Swan

Bib: 17338•F

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 34%
Gender (Female)
#0 / 12228
Top 17%
Division (F18-39)
#0 / 5469
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:52
Rank: #10958
Start → 5K
22:52 | 7:22/mi
10K· 6.21 mi
45:36
Rank: #10670 (+288)
5K → 10K
22:44 | 7:19/mi
15K· 9.32 mi
1:08:23
Rank: #10549 (+121)
10K → 15K
22:47 | 7:20/mi
20K· 12.43 mi
1:31:18
Rank: #10281 (+268)
15K → 20K
22:55 | 7:23/mi
Half· 13.11 mi
1:36:14
Rank: #10221 (+60)
20K → Half
4:56 | 7:14/mi
25K· 15.53 mi
1:54:26
Rank: #10153 (+68)
Half → 25K
18:12 | 7:30/mi
30K· 18.64 mi
2:18:33
Rank: #9990 (+163)
25K → 30K
24:07 | 7:46/mi
20M
2:29:17
Rank: #9908 (+82)
30K → 20M
10:44 | 7:54/mi
21M
2:37:28
Rank: #9788 (+120)
20M → 21M
8:11 | 8:11/mi
35K· 21.75 mi
2:43:11
Rank: #9764 (+24)
21M → 35K
5:43 | 7:38/mi
23M
2:53:05
Rank: #9716 (+48)
35K → 23M
9:54 | 7:54/mi
24M
3:00:44
Rank: #9639 (+77)
23M → 24M
7:39 | 7:39/mi
40K· 24.85 mi
3:07:31
Rank: #9611 (+28)
24M → 40K
6:47 | 7:56/mi
25.2M
3:10:30
Rank: #9601 (+10)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:18:05
Rank: #9548 (+53)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:14
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:41:51
Pace7:46 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:1922:527:2222:52
7:22
-
10K
6.21 mi11:36:0345:367:2022:44
7:19
-0:03
15K
9.32 mi11:58:501:08:237:2022:47
7:20
+0:01
20K
12.43 mi12:21:451:31:187:2122:55
7:23
+0:03
Half
13.11 mi12:26:411:36:147:204:56
7:14
-0:09
25K
15.53 mi12:44:531:54:267:2218:12
7:30
+0:16
30K
18.64 mi13:09:002:18:337:2624:07
7:46
+0:16
20M
20.00 mi13:19:442:29:177:2810:44
7:54
+0:08
21M
21.00 mi13:27:552:37:287:308:11
8:11
+0:17
35K
21.75 mi13:33:382:43:117:305:43
7:38
-0:33
23M
23.00 mi13:43:322:53:057:329:54
7:54
+0:16
24M
24.00 mi13:51:113:00:447:327:39
7:39
-0:15
40K
24.85 mi13:57:583:07:317:336:47
7:56
+0:17
25.2M
25.20 mi14:00:573:10:307:342:59
8:39
+0:43
Finish
26.22 mi14:08:323:18:057:347:35
7:26
-1:13

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

7:14 /mi

Average Pace

7:34 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:55

94% of race

Time at Steady Pace

8:11

4% of race

Time at Slower Pace

2:59

2% of race

Average Pace: 7:33 /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 mi11:13:1922:527:2222:52
7:22
#10958
10K
6.21 mi11:36:0345:367:2022:44
7:19
#10670
15K
9.32 mi11:58:501:08:237:2022:47
7:20
#10549
20K
12.43 mi12:21:451:31:187:2122:55
7:23
#10281
Half
13.11 mi12:26:411:36:147:204:56
7:14
#10221
25K
15.53 mi12:44:531:54:267:2218:12
7:30
#10153
30K
18.64 mi13:09:002:18:337:2624:07
7:46
#9990
20M
20.00 mi13:19:442:29:177:2810:44
7:54
#9908
21M
21.00 mi13:27:552:37:287:308:11
8:11
#9788
35K
21.75 mi13:33:382:43:117:305:43
7:38
#9764
23M
23.00 mi13:43:322:53:057:329:54
7:54
#9716
24M
24.00 mi13:51:113:00:447:327:39
7:39
#9639
40K
24.85 mi13:57:583:07:317:336:47
7:56
#9611
25.2M
25.20 mi14:00:573:10:307:342:59
8:39
#9601
Finish
26.22 mi14:08:323:18:057:347:35
7:26
#9548
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi109582261226110278(Top 36%)2011(Top 16%)2011(Top 37%)
10K6.21 mi3.10 mi10670+2882144+1172144+11710501(Top 37%)2061(Top 17%)2061(Top 38%)
15K9.32 mi3.11 mi10549+1212096+482096+4810278(Top 36%)2011(Top 16%)2011(Top 37%)
20K12.43 mi3.11 mi10281+2682004+922004+929701(Top 34%)1831(Top 15%)1831(Top 33%)
Half13.11 mi0.68 mi10221+601977+271977+279465(Top 33%)1708(Top 14%)1708(Top 31%)
25K15.53 mi2.42 mi10153+681981-41981-410039(Top 35%)2115(Top 17%)2115(Top 39%)
30K18.64 mi3.11 mi9990+1631949+321949+329644(Top 34%)2118(Top 17%)2118(Top 39%)
20M20.00 mi1.36 mi9908+821944+51944+59739(Top 34%)2315(Top 19%)2315(Top 42%)
21M21.00 mi1.00 mi9788+1201923+211923+218505(Top 30%)1940(Top 16%)1940(Top 35%)
35K21.75 mi0.75 mi9764+241940-171940-179660(Top 34%)2435(Top 20%)2435(Top 45%)
23M23.00 mi1.25 mi9716+481960-201960-209357(Top 33%)2424(Top 20%)2424(Top 44%)
24M24.00 mi1.00 mi9639+771963-31963-38804(Top 31%)2230(Top 18%)2230(Top 41%)
40K24.85 mi0.85 mi9611+281984-211984-219716(Top 34%)2775(Top 23%)2775(Top 51%)
25.2M25.20 mi0.35 mi9601+102002-182002-189746(Top 34%)2872(Top 23%)2872(Top 53%)
Finish26.22 mi1.02 mi9548+532022-202022-208798(Top 31%)2436(Top 20%)2436(Top 45%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

10278

Females

2011

F18-39

2011

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

10501

Females

2061

F18-39

2061

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

10278

Females

2011

F18-39

2011

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9701

Females

1831

F18-39

1831

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

9465

Females

1708

F18-39

1708

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

10039

Females

2115

F18-39

2115

25K→30K

15.5 - 18.6 mi

Top 34%
×9stories
+181ft-148ft

Overall

9644

Females

2118

F18-39

2118

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9739

Females

2315

F18-39

2315

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8505

Females

1940

F18-39

1940

21M→35K

21.0 - 21.8 mi

Top 34%
×7stories
+17ft-86ft

Overall

9660

Females

2435

F18-39

2435

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

9357

Females

2424

F18-39

2424

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8804

Females

2230

F18-39

2230

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9716

Females

2775

F18-39

2775

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9746

Females

2872

F18-39

2872

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8798

Females

2436

F18-39

2436

Passing Analysis

Category:
Athletes Passed
2395*
Passed By
984
Net Change
+1410
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10958
5K → 10K432144+288#10958#10670
10K → 15K224103+121#10670#10549
15K → 20K31749+268#10549#10281
20K → Half688+60#10281#10221
Half → 25K185117+68#10221#10153
25K → 30K302*139+163#10153#9990
30K → 20M15774+82#9990#9908
20M → 21M15838+120#9908#9788
21M → 35K7349+24#9788#9764
35K → 23M13082+48#9764#9716
23M → 24M12043+77#9716#9639
24M → 40K8860+28#9639#9611
40K → 25.2M3828+10#9611#9601
25.2M → Finish10350+53#9601#9548
TOTALS2395*984+1410

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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