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BOSTON MARATHON 2025

Jill Brearley-Swaine

Bib: 22726•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 46%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:28/mi
26:19
↑ 97↓ 3451.5%
10K· 6.21 mi
8:28/mi
52:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:32/mi
1:19:08
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:45:52
↑ 106↓ 860.1%
Half· 13.11 mi
8:26/mi
1:51:37
↑ 19↓ 370.5%
25K· 15.53 mi
8:38/mi
2:12:32
↑ 66↓ 880.2%
30K· 18.64 mi
8:59/mi
2:40:26
↑ 181↓ 1480.2%
20M
9:13/mi
2:52:58
↑ 64↓ 500.2%
21M
9:37/mi
3:02:35
↑ 106↓ 241.6%
35K· 21.75 mi
8:51/mi
3:09:12
↑ 17↓ 861.7%
23M
9:13/mi
3:20:44
↑ 23↓ 630.6%
24M
9:04/mi
3:29:48
↓ 821.3%
40K· 24.85 mi
9:07/mi
3:37:36
↓ 200.3%
25.2M
9:40/mi
3:40:56
↑ 13↓ 160.2%
Finish· 26.22 mi
8:46/mi
3:49:52
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:37
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time1:58:15
Pace9:01 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:3426:198:2826:19
8:28
-
10K
6.21 mi11:49:5252:378:2826:18
8:28
0:00
15K
9.32 mi12:16:231:19:088:2926:31
8:32
+0:04
20K
12.43 mi12:43:071:45:528:3126:44
8:36
+0:04
Half
13.11 mi12:48:521:51:378:315:45
8:26
-0:10
25K
15.53 mi13:09:472:12:328:3220:55
8:38
+0:12
30K
18.64 mi13:37:412:40:268:3627:54
8:59
+0:21
20M
20.00 mi13:50:132:52:588:3912:32
9:13
+0:14
21M
21.00 mi13:59:503:02:358:429:37
9:37
+0:24
35K
21.75 mi14:06:273:09:128:426:37
8:51
-0:46
23M
23.00 mi14:17:593:20:448:4411:32
9:13
+0:22
24M
24.00 mi14:27:033:29:488:459:04
9:04
-0:09
40K
24.85 mi14:34:513:37:368:457:48
9:07
+0:03
25.2M
25.20 mi14:38:113:40:568:463:20
9:40
+0:33
Finish
26.22 mi14:47:073:49:528:468:56
8:46
-0:54

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

8:46 /mi

Slowest Pace

9:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:36:55

94% of race

Time at Steady Pace

12:57

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:46 /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 mi11:23:3426:198:2826:19
8:28
#19729
10K
6.21 mi11:49:5252:378:2826:18
8:28
#19642
15K
9.32 mi12:16:231:19:088:2926:31
8:32
#19600
20K
12.43 mi12:43:071:45:528:3126:44
8:36
#19381
Half
13.11 mi12:48:521:51:378:315:45
8:26
#19348
25K
15.53 mi13:09:472:12:328:3220:55
8:38
#19108
30K
18.64 mi13:37:412:40:268:3627:54
8:59
#18799
20M
20.00 mi13:50:132:52:588:3912:32
9:13
#18710
21M
21.00 mi13:59:503:02:358:429:37
9:37
#18586
35K
21.75 mi14:06:273:09:128:426:37
8:51
#18547
23M
23.00 mi14:17:593:20:448:4411:32
9:13
#18443
24M
24.00 mi14:27:033:29:488:459:04
9:04
#18390
40K
24.85 mi14:34:513:37:368:457:48
9:07
#18350
25.2M
25.20 mi14:38:113:40:568:463:20
9:40
#18295
Finish
26.22 mi14:47:073:49:528:468:56
8:46
#18294
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi197297347734719547(Top 69%)7199(Top 59%)7199(Top 397%)
10K6.21 mi3.10 mi19642+877265+827265+8219606(Top 69%)7239(Top 59%)7239(Top 399%)
15K9.32 mi3.11 mi19600+427235+307235+3019547(Top 69%)7199(Top 59%)7199(Top 397%)
20K12.43 mi3.11 mi19381+2197122+1137122+11318891(Top 67%)6849(Top 56%)6849(Top 378%)
Half13.11 mi0.68 mi19348+337106+167106+1618786(Top 66%)6780(Top 55%)6780(Top 374%)
25K15.53 mi2.42 mi19108+2406975+1316975+13117984(Top 63%)6425(Top 53%)6425(Top 354%)
30K18.64 mi3.11 mi18799+3096825+1506825+15017598(Top 62%)6362(Top 52%)6362(Top 351%)
20M20.00 mi1.36 mi18710+896808+176808+1717910(Top 63%)6659(Top 54%)6659(Top 367%)
21M21.00 mi1.00 mi18586+1246769+396769+3916660(Top 59%)6070(Top 50%)6070(Top 335%)
35K21.75 mi0.75 mi18547+396764+56764+517521(Top 62%)6647(Top 54%)6647(Top 367%)
23M23.00 mi1.25 mi18443+1046729+356729+3517397(Top 61%)6660(Top 54%)6660(Top 367%)
24M24.00 mi1.00 mi18390+536731-26731-217720(Top 62%)6886(Top 56%)6886(Top 380%)
40K24.85 mi0.85 mi18350+406741-106741-1017004(Top 60%)6587(Top 54%)6587(Top 363%)
25.2M25.20 mi0.35 mi18295+556722+196722+1915523(Top 55%)5847(Top 48%)5847(Top 323%)
Finish26.22 mi1.02 mi18294+16741-196741-1917884(Top 63%)7019(Top 57%)7019(Top 387%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19547

Females

7199

F45-49

7199

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19606

Females

7239

F45-49

7239

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19547

Females

7199

F45-49

7199

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

18891

Females

6849

F45-49

6849

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18786

Females

6780

F45-49

6780

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17984

Females

6425

F45-49

6425

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17598

Females

6362

F45-49

6362

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17910

Females

6659

F45-49

6659

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

16660

Females

6070

F45-49

6070

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

17521

Females

6647

F45-49

6647

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17397

Females

6660

F45-49

6660

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

17720

Females

6886

F45-49

6886

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17004

Females

6587

F45-49

6587

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15523

Females

5847

F45-49

5847

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

17884

Females

7019

F45-49

7019

Passing Analysis

Category:
Athletes Passed
2402
Passed By
967
Net Change
+1435
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19729
5K → 10K302215+87#19729#19642
10K → 15K216174+42#19642#19600
15K → 20K30687+219#19600#19381
20K → Half4815+33#19381#19348
Half → 25K29454+240#19348#19108
25K → 30K38879+309#19108#18799
30K → 20M14051+89#18799#18710
20M → 21M17349+124#18710#18586
21M → 35K7233+39#18586#18547
35K → 23M15450+104#18547#18443
23M → 24M10148+53#18443#18390
24M → 40K8949+40#18390#18350
40K → 25.2M605+55#18350#18295
25.2M → Finish5958+1#18295#18294
TOTALS2402967+1435
📊

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