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BOSTON MARATHON 2025

Kathryn Williams

Bib: 14317•F

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 31%
Masters (Masters Women)
#0 / 6759
Top 16%
Division (F40-44)
#0 / 1718
Top 34%
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
7:36/mi
23:36
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:15
↑ 79↓ 1380.4%
15K· 9.32 mi
7:35/mi
1:10:50
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:34:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:39:52
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
1:59:29
↑ 66↓ 880.2%
30K· 18.64 mi
8:44/mi
2:26:37
↑ 181↓ 1480.2%
20M
8:28/mi
2:38:07
↑ 64↓ 500.2%
21M
9:00/mi
2:47:07
↑ 106↓ 241.6%
35K· 21.75 mi
8:08/mi
2:53:12
↑ 17↓ 861.7%
23M
8:18/mi
3:03:35
↑ 23↓ 630.6%
24M
8:07/mi
3:11:42
↓ 821.3%
40K· 24.85 mi
8:09/mi
3:18:40
↓ 200.3%
25.2M
8:51/mi
3:21:43
↑ 13↓ 160.2%
Finish· 26.22 mi
7:48/mi
3:29:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:52
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:49:48
Pace8:23 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2823:367:3623:36
7:36
-
10K
6.21 mi11:20:0747:157:3623:39
7:37
+0:01
15K
9.32 mi11:43:421:10:507:3623:35
7:35
-0:02
20K
12.43 mi12:07:301:34:387:3723:48
7:40
+0:05
Half
13.11 mi12:12:441:39:527:375:14
7:40
0:00
25K
15.53 mi12:32:211:59:297:4119:37
8:05
+0:25
30K
18.64 mi12:59:292:26:377:5227:08
8:44
+0:39
20M
20.00 mi13:10:592:38:077:5411:30
8:28
-0:16
21M
21.00 mi13:19:592:47:077:579:00
9:00
+0:32
35K
21.75 mi13:26:042:53:127:586:05
8:08
-0:52
23M
23.00 mi13:36:273:03:357:5910:23
8:18
+0:10
24M
24.00 mi13:44:343:11:427:598:07
8:07
-0:11
40K
24.85 mi13:51:323:18:408:006:58
8:09
+0:02
25.2M
25.20 mi13:54:353:21:438:003:03
8:51
+0:42
Finish
26.22 mi14:02:323:29:408:007:57
7:48
-1:03

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

7:35 /mi

Average Pace

8:00 /mi

Slowest Pace

9:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:59

76% of race

Time at Steady Pace

41:41

20% of race

Time at Slower Pace

9:00

4% of race

Average Pace: 8:00 /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 mi10:56:2823:367:3623:36
7:36
#13094
10K
6.21 mi11:20:0747:157:3623:39
7:37
#13088
15K
9.32 mi11:43:421:10:507:3623:35
7:35
#12871
20K
12.43 mi12:07:301:34:387:3723:48
7:40
#12620
Half
13.11 mi12:12:441:39:527:375:14
7:40
#12653
25K
15.53 mi12:32:211:59:297:4119:37
8:05
#12963
30K
18.64 mi12:59:292:26:377:5227:08
8:44
#13605
20M
20.00 mi13:10:592:38:077:5411:30
8:28
#13569
21M
21.00 mi13:19:592:47:077:579:00
9:00
#13539
35K
21.75 mi13:26:042:53:127:586:05
8:08
#13510
23M
23.00 mi13:36:273:03:357:5910:23
8:18
#13387
24M
24.00 mi13:44:343:11:427:598:07
8:07
#13308
40K
24.85 mi13:51:323:18:408:006:58
8:09
#13214
25.2M
25.20 mi13:54:353:21:438:003:03
8:51
#13175
Finish
26.22 mi14:02:323:29:408:007:57
7:48
#13126
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi130943373337312541(Top 44%)3188(Top 26%)3188(Top 186%)
10K6.21 mi3.10 mi13088+63394-213394-2113149(Top 46%)3461(Top 28%)3461(Top 201%)
15K9.32 mi3.11 mi12871+2173312+823312+8212541(Top 44%)3188(Top 26%)3188(Top 186%)
20K12.43 mi3.11 mi12620+2513217+953217+9512067(Top 42%)3038(Top 25%)3038(Top 177%)
Half13.11 mi0.68 mi12653-333245-283245-2813228(Top 47%)3628(Top 30%)3628(Top 211%)
25K15.53 mi2.42 mi12963-3103454-2093454-20914579(Top 51%)4523(Top 37%)4523(Top 263%)
30K18.64 mi3.11 mi13605-6423885-4313885-43116184(Top 57%)5571(Top 46%)5571(Top 324%)
20M20.00 mi1.36 mi13569+363889-43889-413552(Top 48%)4269(Top 35%)4269(Top 248%)
21M21.00 mi1.00 mi13539+303913-243913-2413520(Top 48%)4368(Top 36%)4368(Top 254%)
35K21.75 mi0.75 mi13510+293917-43917-413166(Top 46%)4250(Top 35%)4250(Top 247%)
23M23.00 mi1.25 mi13387+1233890+273890+2712023(Top 42%)3757(Top 31%)3757(Top 219%)
24M24.00 mi1.00 mi13308+793869+213869+2112049(Top 42%)3828(Top 31%)3828(Top 223%)
40K24.85 mi0.85 mi13214+943848+213848+2111258(Top 40%)3542(Top 29%)3542(Top 206%)
25.2M25.20 mi0.35 mi13175+393839+93839+911007(Top 39%)3501(Top 29%)3501(Top 204%)
Finish26.22 mi1.02 mi13126+493833+63833+611482(Top 40%)3699(Top 30%)3699(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

12541

Females

3188

F40-44

3188

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

13149

Females

3461

F40-44

3461

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

12541

Females

3188

F40-44

3188

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

12067

Females

3038

F40-44

3038

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

13228

Females

3628

F40-44

3628

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

14579

Females

4523

F40-44

4523

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

16184

Females

5571

F40-44

5571

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13552

Females

4269

F40-44

4269

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

13520

Females

4368

F40-44

4368

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

13166

Females

4250

F40-44

4250

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

12023

Females

3757

F40-44

3757

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

12049

Females

3828

F40-44

3828

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11258

Females

3542

F40-44

3542

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11007

Females

3501

F40-44

3501

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11482

Females

3699

F40-44

3699

Passing Analysis

Category:
Athletes Passed
2026
Passed By
2058
Net Change
-32
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13094
5K → 10K285279+6#13094#13088
10K → 15K334117+217#13088#12871
15K → 20K32776+251#12871#12620
20K → Half2053-33#12620#12653
Half → 25K86396-310#12653#12963
25K → 30K101743-642#12963#13605
30K → 20M143107+36#13605#13569
20M → 21M12494+30#13569#13539
21M → 35K6435+29#13539#13510
35K → 23M16441+123#13510#13387
23M → 24M11435+79#13387#13308
24M → 40K12531+94#13308#13214
40K → 25.2M5213+39#13214#13175
25.2M → Finish8738+49#13175#13126
TOTALS20262058-32
📊

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