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BOSTON MARATHON 2025

Heather Williams

Bib: 21546•F

NV

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 42%
Division (F50-54)
#0 / 1303
Top 37%
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
8:24/mi
26:05
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
52:30
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:20:05
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:46:48
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:52:25
↑ 19↓ 370.5%
25K· 15.53 mi
8:34/mi
2:13:11
↑ 66↓ 880.2%
30K· 18.64 mi
9:02/mi
2:41:14
↑ 181↓ 1480.2%
20M
8:53/mi
2:53:18
↑ 64↓ 500.2%
21M
9:31/mi
3:02:49
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
3:09:12
↑ 17↓ 861.7%
23M
8:46/mi
3:20:10
↑ 23↓ 630.6%
24M
8:32/mi
3:28:42
↓ 821.3%
40K· 24.85 mi
8:26/mi
3:35:55
↓ 200.3%
25.2M
9:11/mi
3:39:05
↑ 13↓ 160.2%
Finish· 26.22 mi
8:07/mi
3:47:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:25
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time1:54:56
Pace8:46 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2926:058:2426:05
8:24
-
10K
6.21 mi11:48:5452:308:2726:25
8:30
+0:06
15K
9.32 mi12:16:291:20:058:3627:35
8:53
+0:23
20K
12.43 mi12:43:121:46:488:3626:43
8:36
-0:17
Half
13.11 mi12:48:491:52:258:355:37
8:14
-0:22
25K
15.53 mi13:09:352:13:118:3420:46
8:34
+0:20
30K
18.64 mi13:37:382:41:148:3928:03
9:02
+0:28
20M
20.00 mi13:49:422:53:188:4012:04
8:53
-0:09
21M
21.00 mi13:59:133:02:498:429:31
9:31
+0:38
35K
21.75 mi14:05:363:09:128:426:23
8:32
-0:59
23M
23.00 mi14:16:343:20:108:4210:58
8:46
+0:14
24M
24.00 mi14:25:063:28:428:428:32
8:32
-0:14
40K
24.85 mi14:32:193:35:558:417:13
8:26
-0:06
25.2M
25.20 mi14:35:293:39:058:423:10
9:11
+0:45
Finish
26.22 mi14:43:453:47:218:418:16
8:07
-1:04

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

8:07 /mi

Average Pace

8:41 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:37

82% of race

Time at Steady Pace

40:44

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:40 /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 mi11:22:2926:058:2426:05
8:24
#19291
10K
6.21 mi11:48:5452:308:2726:25
8:30
#19534
15K
9.32 mi12:16:291:20:058:3627:35
8:53
#20186
20K
12.43 mi12:43:121:46:488:3626:43
8:36
#19842
Half
13.11 mi12:48:491:52:258:355:37
8:14
#19733
25K
15.53 mi13:09:352:13:118:3420:46
8:34
#19349
30K
18.64 mi13:37:382:41:148:3928:03
9:02
#19039
20M
20.00 mi13:49:422:53:188:4012:04
8:53
#18822
21M
21.00 mi13:59:133:02:498:429:31
9:31
#18648
35K
21.75 mi14:05:363:09:128:426:23
8:32
#18544
23M
23.00 mi14:16:343:20:108:4210:58
8:46
#18305
24M
24.00 mi14:25:063:28:428:428:32
8:32
#18126
40K
24.85 mi14:32:193:35:558:417:13
8:26
#17936
25.2M
25.20 mi14:35:293:39:058:423:10
9:11
#17854
Finish
26.22 mi14:43:453:47:218:418:16
8:07
#17698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi192917075707521450(Top 76%)8245(Top 67%)8245(Top 633%)
10K6.21 mi3.10 mi19534-2437202-1277202-12719818(Top 70%)7367(Top 60%)7367(Top 565%)
15K9.32 mi3.11 mi20186-6527576-3747576-37421450(Top 76%)8245(Top 67%)8245(Top 633%)
20K12.43 mi3.11 mi19842+3447385+1917385+19118846(Top 66%)6819(Top 56%)6819(Top 523%)
Half13.11 mi0.68 mi19733+1097325+607325+6017550(Top 62%)6076(Top 50%)6076(Top 466%)
25K15.53 mi2.42 mi19349+3847116+2097116+20917593(Top 62%)6188(Top 51%)6188(Top 475%)
30K18.64 mi3.11 mi19039+3106980+1366980+13617832(Top 63%)6491(Top 53%)6491(Top 498%)
20M20.00 mi1.36 mi18822+2176866+1146866+11416144(Top 57%)5686(Top 46%)5686(Top 436%)
21M21.00 mi1.00 mi18648+1746803+636803+6316178(Top 57%)5805(Top 47%)5805(Top 446%)
35K21.75 mi0.75 mi18544+1046761+426761+4215716(Top 55%)5634(Top 46%)5634(Top 432%)
23M23.00 mi1.25 mi18305+2396655+1066655+10614916(Top 53%)5296(Top 43%)5296(Top 406%)
24M24.00 mi1.00 mi18126+1796586+696586+6914772(Top 52%)5260(Top 43%)5260(Top 404%)
40K24.85 mi0.85 mi17936+1906512+746512+7413104(Top 46%)4515(Top 37%)4515(Top 347%)
25.2M25.20 mi0.35 mi17854+826476+366476+3612938(Top 46%)4496(Top 37%)4496(Top 345%)
Finish26.22 mi1.02 mi17698+1566412+646412+6413727(Top 48%)4825(Top 39%)4825(Top 370%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21450

Females

8245

F50-54

8245

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

19818

Females

7367

F50-54

7367

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21450

Females

8245

F50-54

8245

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18846

Females

6819

F50-54

6819

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17550

Females

6076

F50-54

6076

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17593

Females

6188

F50-54

6188

25K→30K

15.5 - 18.6 mi

Top 63%
×9story building
+181ft-148ft

Overall

17832

Females

6491

F50-54

6491

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16144

Females

5686

F50-54

5686

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

16178

Females

5805

F50-54

5805

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

15716

Females

5634

F50-54

5634

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

14916

Females

5296

F50-54

5296

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

14772

Females

5260

F50-54

5260

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13104

Females

4515

F50-54

4515

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12938

Females

4496

F50-54

4496

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2story building
+22ft-21ft

Overall

13727

Females

4825

F50-54

4825

Passing Analysis

Category:
Athletes Passed
2916
Passed By
1323
Net Change
+1593
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19291
5K → 10K151394-243#19291#19534
10K → 15K59711-652#19534#20186
15K → 20K38339+344#20186#19842
20K → Half1134+109#19842#19733
Half → 25K40016+384#19733#19349
25K → 30K38777+310#19349#19039
30K → 20M23215+217#19039#18822
20M → 21M19824+174#18822#18648
21M → 35K11410+104#18648#18544
35K → 23M25011+239#18544#18305
23M → 24M1845+179#18305#18126
24M → 40K1933+190#18126#17936
40K → 25.2M853+82#17936#17854
25.2M → Finish16711+156#17854#17698
TOTALS29161323+1593
📊

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