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BOSTON MARATHON 2025

Erika Williams

Bib: 23638•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 45%
Division (F50-54)
#0 / 1303
Top 42%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:18
Rank: #19685
Start → 5K
26:18 | 8:28/mi
10K· 6.21 mi
52:32
Rank: #19559 (+126)
5K → 10K
26:14 | 8:27/mi
15K· 9.32 mi
1:18:58
Rank: #19498 (+61)
10K → 15K
26:26 | 8:30/mi
20K· 12.43 mi
1:45:34
Rank: #19229 (+269)
15K → 20K
26:36 | 8:34/mi
Half· 13.11 mi
1:51:17
Rank: #19193 (+36)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:12:48
Rank: #19198 (-5)
Half → 25K
21:31 | 8:52/mi
30K· 18.64 mi
2:41:24
Rank: #19089 (+109)
25K → 30K
28:36 | 9:12/mi
20M
2:53:51
Rank: #18995 (+94)
30K → 20M
12:27 | 9:10/mi
21M
3:03:59
Rank: #18964 (+31)
20M → 21M
10:08 | 10:08/mi
35K· 21.75 mi
3:10:24
Rank: #18851 (+113)
21M → 35K
6:25 | 8:35/mi
23M
3:21:31
Rank: #18649 (+202)
35K → 23M
11:07 | 8:53/mi
24M
3:30:01
Rank: #18471 (+178)
23M → 24M
8:30 | 8:30/mi
40K· 24.85 mi
3:37:28
Rank: #18317 (+154)
24M → 40K
7:27 | 8:43/mi
25.2M
3:40:52
Rank: #18280 (+37)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
3:49:34
Rank: #18225 (+55)
25.2M → Finish
8:42 | 8:32/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:17
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time1:58:17
Pace9:01 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:5926:188:2826:18
8:28
-
10K
6.21 mi11:50:1352:328:2726:14
8:27
-0:01
15K
9.32 mi12:16:391:18:588:2826:26
8:30
+0:03
20K
12.43 mi12:43:151:45:348:3026:36
8:34
+0:04
Half
13.11 mi12:48:581:51:178:295:43
8:23
-0:11
25K
15.53 mi13:10:292:12:488:3321:31
8:52
+0:29
30K
18.64 mi13:39:052:41:248:3928:36
9:12
+0:20
20M
20.00 mi13:51:322:53:518:4212:27
9:10
-0:02
21M
21.00 mi14:01:403:03:598:4610:08
10:08
+0:58
35K
21.75 mi14:08:053:10:248:456:25
8:35
-1:33
23M
23.00 mi14:19:123:21:318:4611:07
8:53
+0:18
24M
24.00 mi14:27:423:30:018:458:30
8:30
-0:23
40K
24.85 mi14:35:093:37:288:457:27
8:43
+0:13
25.2M
25.20 mi14:38:333:40:528:463:24
9:52
+1:09
Finish
26.22 mi14:47:153:49:348:468:42
8:32
-1:20

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

8:23 /mi

Average Pace

8:46 /mi

Slowest Pace

10:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:22:21

62% of race

Time at Slower Pace

1:27:13

38% of race

Average Pace: 8:45 /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 mi11:23:5926:188:2826:18
8:28
#19685
10K
6.21 mi11:50:1352:328:2726:14
8:27
#19559
15K
9.32 mi12:16:391:18:588:2826:26
8:30
#19498
20K
12.43 mi12:43:151:45:348:3026:36
8:34
#19229
Half
13.11 mi12:48:581:51:178:295:43
8:23
#19193
25K
15.53 mi13:10:292:12:488:3321:31
8:52
#19198
30K
18.64 mi13:39:052:41:248:3928:36
9:12
#19089
20M
20.00 mi13:51:322:53:518:4212:27
9:10
#18995
21M
21.00 mi14:01:403:03:598:4610:08
10:08
#18964
35K
21.75 mi14:08:053:10:248:456:25
8:35
#18851
23M
23.00 mi14:19:123:21:318:4611:07
8:53
#18649
24M
24.00 mi14:27:423:30:018:458:30
8:30
#18471
40K
24.85 mi14:35:093:37:288:457:27
8:43
#18317
25.2M
25.20 mi14:38:333:40:528:463:24
9:52
#18280
Finish
26.22 mi14:47:153:49:348:468:42
8:32
#18225
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi196857315731519382(Top 68%)7111(Top 58%)7111(Top 546%)
10K6.21 mi3.10 mi19559+1267215+1007215+10019482(Top 69%)7161(Top 59%)7161(Top 550%)
15K9.32 mi3.11 mi19498+617178+377178+3719382(Top 68%)7111(Top 58%)7111(Top 546%)
20K12.43 mi3.11 mi19229+2697038+1407038+14018622(Top 66%)6698(Top 55%)6698(Top 514%)
Half13.11 mi0.68 mi19193+367021+177021+1718529(Top 65%)6643(Top 54%)6643(Top 510%)
25K15.53 mi2.42 mi19198-57024-37024-319309(Top 68%)7146(Top 58%)7146(Top 548%)
30K18.64 mi3.11 mi19089+1097010+147010+1418660(Top 66%)6926(Top 57%)6926(Top 532%)
20M20.00 mi1.36 mi18995+946977+336977+3317614(Top 62%)6478(Top 53%)6478(Top 497%)
21M21.00 mi1.00 mi18964+316988-116988-1118814(Top 66%)7239(Top 59%)7239(Top 556%)
35K21.75 mi0.75 mi18851+1136938+506938+5016001(Top 56%)5792(Top 47%)5792(Top 445%)
23M23.00 mi1.25 mi18649+2026851+876851+8715591(Top 55%)5669(Top 46%)5669(Top 435%)
24M24.00 mi1.00 mi18471+1786776+756776+7514559(Top 51%)5144(Top 42%)5144(Top 395%)
40K24.85 mi0.85 mi18317+1546721+556721+5514741(Top 52%)5395(Top 44%)5395(Top 414%)
25.2M25.20 mi0.35 mi18280+376714+76714+716450(Top 58%)6311(Top 52%)6311(Top 484%)
Finish26.22 mi1.02 mi18225+556696+186696+1816494(Top 58%)6304(Top 52%)6304(Top 484%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

19382

Females

7111

F50-54

7111

5K→10K

3.1 - 6.2 mi

Top 69%
×5stories
+79ft-138ft

Overall

19482

Females

7161

F50-54

7161

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

19382

Females

7111

F50-54

7111

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

18622

Females

6698

F50-54

6698

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18529

Females

6643

F50-54

6643

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19309

Females

7146

F50-54

7146

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18660

Females

6926

F50-54

6926

30K→20M

18.6 - 20.0 mi

Top 62%
×5stories
+64ft-50ft

Overall

17614

Females

6478

F50-54

6478

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

18814

Females

7239

F50-54

7239

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

16001

Females

5792

F50-54

5792

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

15591

Females

5669

F50-54

5669

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

14559

Females

5144

F50-54

5144

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14741

Females

5395

F50-54

5395

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16450

Females

6311

F50-54

6311

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16494

Females

6304

F50-54

6304

Passing Analysis

Category:
Athletes Passed
2468
Passed By
1008
Net Change
+1460
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19685
5K → 10K325199+126#19685#19559
10K → 15K217156+61#19559#19498
15K → 20K33768+269#19498#19229
20K → Half5519+36#19229#19193
Half → 25K171176-5#19193#19198
25K → 30K273164+109#19198#19089
30K → 20M15157+94#19089#18995
20M → 21M11584+31#18995#18964
21M → 35K1196+113#18964#18851
35K → 23M21715+202#18851#18649
23M → 24M1835+178#18649#18471
24M → 40K16612+154#18471#18317
40K → 25.2M5114+37#18317#18280
25.2M → Finish8833+55#18280#18225
TOTALS24681008+1460
📊

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