Boston Marathon logo
BOSTON MARATHON 2025

Sarah Swan

Bib: 20550•F

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:59
Rank: #19106
Start → 5K
25:59 | 8:22/mi
10K· 6.21 mi
51:31
Rank: #18558 (+548)
5K → 10K
25:32 | 8:13/mi
15K· 9.32 mi
1:17:00
Rank: #18164 (+394)
10K → 15K
25:29 | 8:12/mi
20K· 12.43 mi
1:42:46
Rank: #17817 (+347)
15K → 20K
25:46 | 8:18/mi
Half· 13.11 mi
1:48:22
Rank: #17782 (+35)
20K → Half
5:36 | 8:12/mi
25K· 15.53 mi
2:08:45
Rank: #17529 (+253)
Half → 25K
20:23 | 8:24/mi
30K· 18.64 mi
2:37:17
Rank: #17720 (-191)
25K → 30K
28:32 | 9:11/mi
20M
2:51:14
Rank: #18169 (-449)
30K → 20M
13:57 | 10:16/mi
21M
3:02:00
Rank: #18402 (-233)
20M → 21M
10:46 | 10:46/mi
35K· 21.75 mi
3:09:32
Rank: #18636 (-234)
21M → 35K
7:32 | 10:04/mi
23M
3:22:09
Rank: #18811 (-175)
35K → 23M
12:37 | 10:05/mi
24M
3:32:13
Rank: #19005 (-194)
23M → 24M
10:04 | 10:04/mi
40K· 24.85 mi
3:40:57
Rank: #19108 (-103)
24M → 40K
8:44 | 10:13/mi
25.2M
3:44:42
Rank: #19115 (-7)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
3:54:14
Rank: #19183 (-68)
25.2M → Finish
9:32 | 9:21/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:22
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time2:05:52
Pace9:36 /mi
📊Positive Split: 16.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5925:598:2225:59
8:22
-
10K
6.21 mi11:45:3151:318:1725:32
8:13
-0:09
15K
9.32 mi12:11:001:17:008:1625:29
8:12
-0:01
20K
12.43 mi12:36:461:42:468:1625:46
8:18
+0:06
Half
13.11 mi12:42:221:48:228:165:36
8:12
-0:06
25K
15.53 mi13:02:452:08:458:1720:23
8:24
+0:12
30K
18.64 mi13:31:172:37:178:2628:32
9:11
+0:47
20M
20.00 mi13:45:142:51:148:3413:57
10:16
+1:05
21M
21.00 mi13:56:003:02:008:4010:46
10:46
+0:30
35K
21.75 mi14:03:323:09:328:437:32
10:04
-0:42
23M
23.00 mi14:16:093:22:098:4712:37
10:05
+0:01
24M
24.00 mi14:26:133:32:138:5110:04
10:04
-0:01
40K
24.85 mi14:34:573:40:578:538:44
10:13
+0:09
25.2M
25.20 mi14:38:423:44:428:553:45
10:52
+0:39
Finish
26.22 mi14:48:143:54:148:569:32
9:21
-1:31

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

8:12 /mi

Average Pace

8:56 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:45

55% of race

Time at Steady Pace

38:04

16% of race

Time at Slower Pace

1:07:25

29% of race

Average Pace: 8:56 /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 mi11:19:5925:598:2225:59
8:22
#19106
10K
6.21 mi11:45:3151:318:1725:32
8:13
#18558
15K
9.32 mi12:11:001:17:008:1625:29
8:12
#18164
20K
12.43 mi12:36:461:42:468:1625:46
8:18
#17817
Half
13.11 mi12:42:221:48:228:165:36
8:12
#17782
25K
15.53 mi13:02:452:08:458:1720:23
8:24
#17529
30K
18.64 mi13:31:172:37:178:2628:32
9:11
#17720
20M
20.00 mi13:45:142:51:148:3413:57
10:16
#18169
21M
21.00 mi13:56:003:02:008:4010:46
10:46
#18402
35K
21.75 mi14:03:323:09:328:437:32
10:04
#18636
23M
23.00 mi14:16:093:22:098:4712:37
10:05
#18811
24M
24.00 mi14:26:133:32:138:5110:04
10:04
#19005
40K
24.85 mi14:34:573:40:578:538:44
10:13
#19108
25.2M
25.20 mi14:38:423:44:428:553:45
10:52
#19115
Finish
26.22 mi14:48:143:54:148:569:32
9:21
#19183
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi191066967696717421(Top 61%)5970(Top 49%)5970(Top 347%)
10K6.21 mi3.10 mi18558+5486651+3166651+31618032(Top 63%)6314(Top 52%)6314(Top 368%)
15K9.32 mi3.11 mi18164+3946428+2236428+22317421(Top 61%)5970(Top 49%)5970(Top 347%)
20K12.43 mi3.11 mi17817+3476235+1936235+19316921(Top 60%)5735(Top 47%)5735(Top 334%)
Half13.11 mi0.68 mi17782+356220+156220+1517406(Top 61%)6005(Top 49%)6005(Top 350%)
25K15.53 mi2.42 mi17529+2536077+1436077+14316636(Top 59%)5656(Top 46%)5656(Top 329%)
30K18.64 mi3.11 mi17720-1916240-1636240-16318590(Top 65%)6887(Top 56%)6887(Top 401%)
20M20.00 mi1.36 mi18169-4496515-2756515-27521758(Top 77%)8762(Top 72%)8762(Top 510%)
21M21.00 mi1.00 mi18402-2336671-1566671-15620748(Top 73%)8312(Top 68%)8312(Top 484%)
35K21.75 mi0.75 mi18636-2346810-1396810-13922107(Top 78%)9086(Top 74%)9086(Top 529%)
23M23.00 mi1.25 mi18811-1756943-1336943-13320736(Top 73%)8420(Top 69%)8420(Top 490%)
24M24.00 mi1.00 mi19005-1947070-1277070-12721543(Top 76%)8875(Top 73%)8875(Top 517%)
40K24.85 mi0.85 mi19108-1037152-827152-8221122(Top 74%)8722(Top 71%)8722(Top 508%)
25.2M25.20 mi0.35 mi19115-77170-187170-1820275(Top 71%)8295(Top 68%)8295(Top 483%)
Finish26.22 mi1.02 mi19183-687237-677237-6720620(Top 73%)8452(Top 69%)8452(Top 492%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

17421

Females

5970

F40-44

5970

5K→10K

3.1 - 6.2 mi

Top 63%
×5stories
+79ft-138ft

Overall

18032

Females

6314

F40-44

6314

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

17421

Females

5970

F40-44

5970

15K→20K

9.3 - 12.4 mi

Top 60%
×5stories
+106ft-86ft

Overall

16921

Females

5735

F40-44

5735

20K→Half

12.4 - 13.1 mi

Top 61%
×2stories
+19ft-37ft

Overall

17406

Females

6005

F40-44

6005

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16636

Females

5656

F40-44

5656

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18590

Females

6887

F40-44

6887

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21758

Females

8762

F40-44

8762

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

20748

Females

8312

F40-44

8312

21M→35K

21.0 - 21.8 mi

Top 78%
×7stories
+17ft-86ft

Overall

22107

Females

9086

F40-44

9086

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

20736

Females

8420

F40-44

8420

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21543

Females

8875

F40-44

8875

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21122

Females

8722

F40-44

8722

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20275

Females

8295

F40-44

8295

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

20620

Females

8452

F40-44

8452

Passing Analysis

Category:
Athletes Passed
2259
Passed By
2336
Net Change
-77
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19106
5K → 10K63890+548#19106#18558
10K → 15K43844+394#18558#18164
15K → 20K38841+347#18164#17817
20K → Half5015+35#17817#17782
Half → 25K29441+253#17782#17529
25K → 30K165356-191#17529#17720
30K → 20M39488-449#17720#18169
20M → 21M35268-233#18169#18402
21M → 35K17251-234#18402#18636
35K → 23M65240-175#18636#18811
23M → 24M20214-194#18811#19005
24M → 40K45148-103#19005#19108
40K → 25.2M3340-7#19108#19115
25.2M → Finish32100-68#19115#19183
TOTALS22592336-77
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing