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BOSTON MARATHON 2025

Kelly Williamson

Bib: 17422•F

MD

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 44%
Gender (Female)
#0 / 12228
Top 29%
Division (F18-39)
#0 / 5469
Top 47%
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
7:45/mi
24:06
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:47
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:32
↑ 67↓ 78
20K· 12.43 mi
7:45/mi
1:35:37
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:40:52
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
1:59:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:05/mi
2:24:56
↑ 181↓ 1480.2%
20M
8:03/mi
2:35:53
↑ 64↓ 500.2%
21M
8:35/mi
2:44:28
↑ 106↓ 241.6%
35K· 21.75 mi
8:03/mi
2:50:29
↑ 17↓ 861.7%
23M
8:24/mi
3:01:00
↑ 23↓ 630.6%
24M
8:15/mi
3:09:15
↓ 821.3%
40K· 24.85 mi
8:30/mi
3:16:31
↓ 200.3%
25.2M
9:14/mi
3:19:42
↑ 13↓ 160.2%
Finish· 26.22 mi
8:00/mi
3:27:51
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:52
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:46:59
Pace8:10 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4224:067:4524:06
7:45
-
10K
6.21 mi11:38:2347:477:4123:41
7:37
-0:08
15K
9.32 mi12:02:081:11:327:4023:45
7:39
+0:02
20K
12.43 mi12:26:131:35:377:4224:05
7:45
+0:06
Half
13.11 mi12:31:281:40:527:425:15
7:42
-0:03
25K
15.53 mi12:50:261:59:507:4318:58
7:49
+0:07
30K
18.64 mi13:15:322:24:567:4625:06
8:05
+0:16
20M
20.00 mi13:26:292:35:537:4810:57
8:03
-0:02
21M
21.00 mi13:35:042:44:287:508:35
8:35
+0:32
35K
21.75 mi13:41:052:50:297:506:01
8:03
-0:32
23M
23.00 mi13:51:363:01:007:5210:31
8:24
+0:21
24M
24.00 mi13:59:513:09:157:538:15
8:15
-0:09
40K
24.85 mi14:07:073:16:317:547:16
8:30
+0:15
25.2M
25.20 mi14:10:183:19:427:553:11
9:14
+0:44
Finish
26.22 mi14:18:273:27:517:568:09
8:00
-1:14

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

7:37 /mi

Average Pace

7:56 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:50

58% of race

Time at Steady Pace

58:28

28% of race

Time at Slower Pace

29:33

14% of race

Average Pace: 7:56 /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 mi11:14:4224:067:4524:06
7:45
#14449
10K
6.21 mi11:38:2347:477:4123:41
7:37
#13844
15K
9.32 mi12:02:081:11:327:4023:45
7:39
#13535
20K
12.43 mi12:26:131:35:377:4224:05
7:45
#13308
Half
13.11 mi12:31:281:40:527:425:15
7:42
#13305
25K
15.53 mi12:50:261:59:507:4318:58
7:49
#13143
30K
18.64 mi13:15:322:24:567:4625:06
8:05
#12857
20M
20.00 mi13:26:292:35:537:4810:57
8:03
#12680
21M
21.00 mi13:35:042:44:287:508:35
8:35
#12550
35K
21.75 mi13:41:052:50:297:506:01
8:03
#12533
23M
23.00 mi13:51:363:01:007:5210:31
8:24
#12526
24M
24.00 mi13:59:513:09:157:538:15
8:15
#12530
40K
24.85 mi14:07:073:16:317:547:16
8:30
#12540
25.2M
25.20 mi14:10:183:19:427:553:11
9:14
#12546
Finish
26.22 mi14:18:273:27:517:568:09
8:00
#12540
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi144494185418513002(Top 46%)3444(Top 28%)3444(Top 63%)
10K6.21 mi3.10 mi13844+6053850+3353850+33513244(Top 47%)3521(Top 29%)3521(Top 64%)
15K9.32 mi3.11 mi13535+3093705+1453705+14513002(Top 46%)3444(Top 28%)3444(Top 63%)
20K12.43 mi3.11 mi13308+2273610+953610+9512875(Top 45%)3481(Top 28%)3481(Top 64%)
Half13.11 mi0.68 mi13305+33613-33613-313401(Top 47%)3712(Top 30%)3712(Top 68%)
25K15.53 mi2.42 mi13143+1623560+533560+5312550(Top 44%)3426(Top 28%)3426(Top 63%)
30K18.64 mi3.11 mi12857+2863459+1013459+10111956(Top 42%)3271(Top 27%)3271(Top 60%)
20M20.00 mi1.36 mi12680+1773401+583401+5810855(Top 38%)2871(Top 23%)2871(Top 52%)
21M21.00 mi1.00 mi12550+1303366+353366+3511019(Top 39%)3114(Top 25%)3114(Top 57%)
35K21.75 mi0.75 mi12533+173380-143380-1412562(Top 44%)3925(Top 32%)3925(Top 72%)
23M23.00 mi1.25 mi12526+73414-343414-3412695(Top 45%)4093(Top 33%)4093(Top 75%)
24M24.00 mi1.00 mi12530-43435-213435-2112926(Top 46%)4276(Top 35%)4276(Top 78%)
40K24.85 mi0.85 mi12540-103474-393474-3913436(Top 47%)4663(Top 38%)4663(Top 85%)
25.2M25.20 mi0.35 mi12546-63498-243498-2413123(Top 46%)4542(Top 37%)4542(Top 83%)
Finish26.22 mi1.02 mi12540+63522-243522-2412879(Top 45%)4362(Top 36%)4362(Top 80%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13002

Females

3444

F18-39

3444

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13244

Females

3521

F18-39

3521

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13002

Females

3444

F18-39

3444

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12875

Females

3481

F18-39

3481

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

13401

Females

3712

F18-39

3712

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12550

Females

3426

F18-39

3426

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11956

Females

3271

F18-39

3271

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10855

Females

2871

F18-39

2871

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

11019

Females

3114

F18-39

3114

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12562

Females

3925

F18-39

3925

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12695

Females

4093

F18-39

4093

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12926

Females

4276

F18-39

4276

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13436

Females

4663

F18-39

4663

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

13123

Females

4542

F18-39

4542

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12879

Females

4362

F18-39

4362

Passing Analysis

Category:
Athletes Passed
2857
Passed By
948
Net Change
+1909
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14449
5K → 10K68176+605#14449#13844
10K → 15K38273+309#13844#13535
15K → 20K30174+227#13535#13308
20K → Half3936+3#13308#13305
Half → 25K23775+162#13305#13143
25K → 30K37791+286#13143#12857
30K → 20M21639+177#12857#12680
20M → 21M17141+130#12680#12550
21M → 35K8265+17#12550#12533
35K → 23M114107+7#12533#12526
23M → 24M8286-4#12526#12530
24M → 40K6777-10#12530#12540
40K → 25.2M3844-6#12540#12546
25.2M → Finish7064+6#12546#12540
TOTALS2857948+1909
📊

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