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BOSTON MARATHON 2025

Karen Williams

Bib: 16914•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F60-64)
#0 / 624
Top 25%
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
8:45/mi
27:12
↑ 97↓ 3451.5%
10K· 6.21 mi
8:49/mi
54:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:22:13
↑ 67↓ 78
20K· 12.43 mi
9:00/mi
1:50:10
↑ 106↓ 860.1%
Half· 13.11 mi
9:01/mi
1:56:19
↑ 19↓ 370.5%
25K· 15.53 mi
9:01/mi
2:18:11
↑ 66↓ 880.2%
30K· 18.64 mi
9:28/mi
2:47:35
↑ 181↓ 1480.2%
20M
9:34/mi
3:00:35
↑ 64↓ 500.2%
21M
10:22/mi
3:10:57
↑ 106↓ 241.6%
35K· 21.75 mi
9:23/mi
3:17:58
↑ 17↓ 861.7%
23M
9:25/mi
3:29:46
↑ 23↓ 630.6%
24M
9:15/mi
3:39:01
↓ 821.3%
40K· 24.85 mi
9:14/mi
3:46:55
↓ 200.3%
25.2M
10:15/mi
3:50:27
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
3:59:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:19
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:03:14
Pace9:24 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:00:5327:128:4527:12
8:45
-
10K
6.21 mi11:28:1854:378:4727:25
8:49
+0:04
15K
9.32 mi11:55:541:22:138:4927:36
8:53
+0:04
20K
12.43 mi12:23:511:50:108:5227:57
9:00
+0:07
Half
13.11 mi12:30:001:56:198:526:09
9:01
+0:01
25K
15.53 mi12:51:522:18:118:5421:52
9:01
0:00
30K
18.64 mi13:21:162:47:358:5929:24
9:28
+0:27
20M
20.00 mi13:34:163:00:359:0213:00
9:34
+0:06
21M
21.00 mi13:44:383:10:579:0610:22
10:22
+0:48
35K
21.75 mi13:51:393:17:589:067:01
9:23
-0:59
23M
23.00 mi14:03:273:29:469:0711:48
9:25
+0:02
24M
24.00 mi14:12:423:39:019:089:15
9:15
-0:10
40K
24.85 mi14:20:363:46:559:087:54
9:14
-0:01
25.2M
25.20 mi14:24:083:50:279:093:32
10:15
+1:01
Finish
26.22 mi14:33:143:59:339:099:06
8:56
-1:19

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

8:45 /mi

Average Pace

9:09 /mi

Slowest Pace

10:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:45:39

94% of race

Time at Steady Pace

3:32

1% of race

Time at Slower Pace

10:22

4% of race

Average Pace: 9:08 /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 mi11:00:5327:128:4527:12
8:45
#21277
10K
6.21 mi11:28:1854:378:4727:25
8:49
#21399
15K
9.32 mi11:55:541:22:138:4927:36
8:53
#21375
20K
12.43 mi12:23:511:50:108:5227:57
9:00
#21242
Half
13.11 mi12:30:001:56:198:526:09
9:01
#21286
25K
15.53 mi12:51:522:18:118:5421:52
9:01
#21077
30K
18.64 mi13:21:162:47:358:5929:24
9:28
#20819
20M
20.00 mi13:34:163:00:359:0213:00
9:34
#20694
21M
21.00 mi13:44:383:10:579:0610:22
10:22
#20615
35K
21.75 mi13:51:393:17:589:067:01
9:23
#20585
23M
23.00 mi14:03:273:29:469:0711:48
9:25
#20466
24M
24.00 mi14:12:423:39:019:089:15
9:15
#20409
40K
24.85 mi14:20:363:46:559:087:54
9:14
#20318
25.2M
25.20 mi14:24:083:50:279:093:32
10:15
#20293
Finish
26.22 mi14:33:143:59:339:099:06
8:56
#20268
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi212778230823021490(Top 76%)8270(Top 68%)8270(Top 1325%)
10K6.21 mi3.10 mi21399-1228269-398269-3921528(Top 76%)8323(Top 68%)8323(Top 1334%)
15K9.32 mi3.11 mi21375+248234+358234+3521490(Top 76%)8270(Top 68%)8270(Top 1325%)
20K12.43 mi3.11 mi21242+1338165+698165+6920953(Top 74%)8028(Top 66%)8028(Top 1287%)
Half13.11 mi0.68 mi21286-448191-268191-2621886(Top 77%)8522(Top 70%)8522(Top 1366%)
25K15.53 mi2.42 mi21077+2098083+1088083+10820000(Top 70%)7536(Top 62%)7536(Top 1208%)
30K18.64 mi3.11 mi20819+2587997+867997+8619800(Top 70%)7548(Top 62%)7548(Top 1210%)
20M20.00 mi1.36 mi20694+1257939+587939+5819494(Top 69%)7522(Top 62%)7522(Top 1205%)
21M21.00 mi1.00 mi20615+797914+257914+2519609(Top 69%)7686(Top 63%)7686(Top 1232%)
35K21.75 mi0.75 mi20585+307911+37911+319890(Top 70%)7921(Top 65%)7921(Top 1269%)
23M23.00 mi1.25 mi20466+1197869+427869+4218368(Top 65%)7175(Top 59%)7175(Top 1150%)
24M24.00 mi1.00 mi20409+577854+157854+1518609(Top 66%)7350(Top 60%)7350(Top 1178%)
40K24.85 mi0.85 mi20318+917826+287826+2817585(Top 62%)6918(Top 57%)6918(Top 1109%)
25.2M25.20 mi0.35 mi20293+257821+57821+518157(Top 64%)7232(Top 59%)7232(Top 1159%)
Finish26.22 mi1.02 mi20268+257820+17820+118698(Top 66%)7433(Top 61%)7433(Top 1191%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21490

Females

8270

F60-64

8270

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21528

Females

8323

F60-64

8323

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21490

Females

8270

F60-64

8270

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

20953

Females

8028

F60-64

8028

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

21886

Females

8522

F60-64

8522

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

20000

Females

7536

F60-64

7536

25K→30K

15.5 - 18.6 mi

Top 70%
×9story building
+181ft-148ft

Overall

19800

Females

7548

F60-64

7548

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

19494

Females

7522

F60-64

7522

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

19609

Females

7686

F60-64

7686

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19890

Females

7921

F60-64

7921

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18368

Females

7175

F60-64

7175

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18609

Females

7350

F60-64

7350

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17585

Females

6918

F60-64

6918

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18157

Females

7232

F60-64

7232

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18698

Females

7433

F60-64

7433

Passing Analysis

Category:
Athletes Passed
2136
Passed By
1127
Net Change
+1009
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21277
5K → 10K229351-122#21277#21399
10K → 15K222198+24#21399#21375
15K → 20K259126+133#21375#21242
20K → Half1862-44#21242#21286
Half → 25K25950+209#21286#21077
25K → 30K34587+258#21077#20819
30K → 20M16540+125#20819#20694
20M → 21M13152+79#20694#20615
21M → 35K5929+30#20615#20585
35K → 23M14526+119#20585#20466
23M → 24M8225+57#20466#20409
24M → 40K10817+91#20409#20318
40K → 25.2M4722+25#20318#20293
25.2M → Finish6742+25#20293#20268
TOTALS21361127+1009
📊

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