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BOSTON MARATHON 2025

Mary Williams

Bib: 30763•F

GA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:29
Rank: #25904
Start → 5K
10:08/mi
31:29 split
10K· 6.21 mi
1:03:01
Rank: #25748 (+156)
5K → 10K
10:09/mi
31:32 split
15K· 9.32 mi
1:35:27
Rank: #25800 (-52)
10K → 15K
10:26/mi
32:26 split
20K· 12.43 mi
2:10:04
Rank: #25912 (-112)
15K → 20K
11:09/mi
34:37 split
Half· 13.11 mi
2:18:10
Rank: #26023 (-111)
20K → Half
11:52/mi
8:06 split
25K· 15.53 mi
2:50:05
Rank: #26423 (-400)
Half → 25K
13:10/mi
31:55 split
30K· 18.64 mi
3:32:53
Rank: #26686 (-263)
25K → 30K
13:47/mi
42:48 split
20M
3:51:57
Rank: #26767 (-81)
30K → 20M
14:02/mi
19:04 split
21M
4:07:01
Rank: #26827 (-60)
20M → 21M
15:04/mi
15:04 split
35K· 21.75 mi
4:17:57
Rank: #26903 (-76)
21M → 35K
14:37/mi
10:56 split
23M
4:35:28
Rank: #26953 (-50)
35K → 23M
13:59/mi
17:31 split
24M
4:48:51
Rank: #26974 (-21)
23M → 24M
13:23/mi
13:23 split
40K· 24.85 mi
5:00:18
Rank: #26962 (+12)
24M → 40K
13:23/mi
11:27 split
25.2M
5:05:06
Rank: #26950 (+12)
40K → 25.2M
13:55/mi
4:48 split
Finish· 26.22 mi
5:16:11
Rank: #26907 (+43)
25.2M → Finish
10:53/mi
11:05 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:10
Pace10:32 /mi
2nd Half
Distance13.11 mi
Time2:58:01
Pace13:35 /mi
📊Positive Split: 28.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:0331:2910:0831:29
10:08
-
10K
6.21 mi12:22:351:03:0110:0831:32
10:09
+0:01
15K
9.32 mi12:55:011:35:2710:1432:26
10:26
+0:17
20K
12.43 mi13:29:382:10:0410:2834:37
11:09
+0:43
Half
13.11 mi13:37:442:18:1010:328:06
11:52
+0:43
25K
15.53 mi14:09:392:50:0510:5731:55
13:10
+1:18
30K
18.64 mi14:52:273:32:5311:2542:48
13:47
+0:37
20M
20.00 mi15:11:313:51:5711:3619:04
14:02
+0:15
21M
21.00 mi15:26:354:07:0111:4615:04
15:04
+1:02
35K
21.75 mi15:37:314:17:5711:5210:56
14:37
-0:27
23M
23.00 mi15:55:024:35:2811:5917:31
13:59
-0:38
24M
24.00 mi16:08:254:48:5112:0213:23
13:23
-0:36
40K
24.85 mi16:19:525:00:1812:0511:27
13:23
0:00
25.2M
25.20 mi16:24:405:05:0612:064:48
13:55
+0:32
Finish
26.22 mi16:35:455:16:1112:0411:05
10:53
-3:02

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

10:08 /mi

Average Pace

12:04 /mi

Slowest Pace

15:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:15

47% of race

Time at Steady Pace

2:20:56

45% of race

Time at Slower Pace

26:00

8% of race

Average Pace: 12:04 /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 mi11:51:0331:2910:0831:29
10:08
#25904
10K
6.21 mi12:22:351:03:0110:0831:32
10:09
#25748
15K
9.32 mi12:55:011:35:2710:1432:26
10:26
#25800
20K
12.43 mi13:29:382:10:0410:2834:37
11:09
#25912
Half
13.11 mi13:37:442:18:1010:328:06
11:52
#26023
25K
15.53 mi14:09:392:50:0510:5731:55
13:10
#26423
30K
18.64 mi14:52:273:32:5311:2542:48
13:47
#26686
20M
20.00 mi15:11:313:51:5711:3619:04
14:02
#26767
21M
21.00 mi15:26:354:07:0111:4615:04
15:04
#26827
35K
21.75 mi15:37:314:17:5711:5210:56
14:37
#26903
23M
23.00 mi15:55:024:35:2811:5917:31
13:59
#26953
24M
24.00 mi16:08:254:48:5112:0213:23
13:23
#26974
40K
24.85 mi16:19:525:00:1812:0511:27
13:23
#26962
25.2M
25.20 mi16:24:405:05:0612:064:48
13:55
#26950
Finish
26.22 mi16:35:455:16:1112:0411:05
10:53
#26907
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25904107131071325824(Top 91%)10691(Top 87%)10691(Top 195%)
10K6.21 mi3.10 mi25748+15610632+8110632+8125618(Top 90%)10590(Top 87%)10590(Top 194%)
15K9.32 mi3.11 mi25800-5210668-3610668-3625824(Top 91%)10691(Top 87%)10691(Top 195%)
20K12.43 mi3.11 mi25912-11210740-7210740-7226208(Top 92%)10921(Top 89%)10921(Top 200%)
Half13.11 mi0.68 mi26023-11110803-6310803-6327349(Top 96%)11614(Top 95%)11614(Top 212%)
25K15.53 mi2.42 mi26423-40011030-22711030-22727406(Top 96%)11657(Top 95%)11657(Top 213%)
30K18.64 mi3.11 mi26686-26311216-18611216-18627342(Top 96%)11682(Top 96%)11682(Top 214%)
20M20.00 mi1.36 mi26767-8111271-5511271-5527311(Top 96%)11714(Top 96%)11714(Top 214%)
21M21.00 mi1.00 mi26827-6011314-4311314-4327202(Top 96%)11675(Top 95%)11675(Top 213%)
35K21.75 mi0.75 mi26903-7611357-4311357-4327954(Top 98%)12065(Top 99%)12065(Top 221%)
23M23.00 mi1.25 mi26953-5011394-3711394-3727314(Top 96%)11765(Top 96%)11765(Top 215%)
24M24.00 mi1.00 mi26974-2111414-2011414-2027226(Top 96%)11765(Top 96%)11765(Top 215%)
40K24.85 mi0.85 mi26962+1211420-611420-626661(Top 94%)11476(Top 94%)11476(Top 210%)
25.2M25.20 mi0.35 mi26950+1211416+411416+426177(Top 92%)11273(Top 92%)11273(Top 206%)
Finish26.22 mi1.02 mi26907+4311396+2011396+2025109(Top 88%)10707(Top 88%)10707(Top 196%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21stories
+97ft-345ft

Overall

25824

Females

10691

F18-39

10691

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

25618

Females

10590

F18-39

10590

10K→15K

6.2 - 9.3 mi

Top 91%
×3stories
+67ft-78ft

Overall

25824

Females

10691

F18-39

10691

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

26208

Females

10921

F18-39

10921

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

27349

Females

11614

F18-39

11614

Half→25K

13.1 - 15.5 mi

Top 96%
×4stories
+66ft-88ft

Overall

27406

Females

11657

F18-39

11657

25K→30K

15.5 - 18.6 mi

Top 96%
×9stories
+181ft-148ft

Overall

27342

Females

11682

F18-39

11682

30K→20M

18.6 - 20.0 mi

Top 96%
×5stories
+64ft-50ft

Overall

27311

Females

11714

F18-39

11714

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

27202

Females

11675

F18-39

11675

21M→35K

21.0 - 21.8 mi

Top 98%
×7stories
+17ft-86ft

Overall

27954

Females

12065

F18-39

12065

35K→23M

21.8 - 23.0 mi

Top 96%
×5stories
+23ft-63ft

Overall

27314

Females

11765

F18-39

11765

23M→24M

23.0 - 24.0 mi

Top 96%
×6stories
+12ft-82ft

Overall

27226

Females

11765

F18-39

11765

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

26661

Females

11476

F18-39

11476

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26177

Females

11273

F18-39

11273

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

25109

Females

10707

F18-39

10707

Passing Analysis

Category:
Athletes Passed
666
Passed By
1669
Net Change
-1003
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25904
5K → 10K278122+156#25904#25748
10K → 15K107159-52#25748#25800
15K → 20K93205-112#25800#25912
20K → Half5116-111#25912#26023
Half → 25K9409-400#26023#26423
25K → 30K25288-263#26423#26686
30K → 20M889-81#26686#26767
20M → 21M1272-60#26767#26827
21M → 35K480-76#26827#26903
35K → 23M1969-50#26903#26953
23M → 24M1536-21#26953#26974
24M → 40K2917+12#26974#26962
40K → 25.2M164+12#26962#26950
25.2M → Finish463+43#26950#26907
TOTALS6661669-1003
📊

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