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BOSTON MARATHON 2025

Kay Mcwilliam

Bib: 21924•F

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 17%
Division (F60-64)
#0 / 624
Top 2%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:20
Rank: #17774
Start → 5K
8:09/mi
25:20 split
10K· 6.21 mi
50:05
Rank: #16974 (+800)
5K → 10K
7:58/mi
24:45 split
15K· 9.32 mi
1:14:41
Rank: #16430 (+544)
10K → 15K
7:55/mi
24:36 split
20K· 12.43 mi
1:39:19
Rank: #15856 (+574)
15K → 20K
7:56/mi
24:38 split
Half· 13.11 mi
1:44:32
Rank: #15729 (+127)
20K → Half
7:39/mi
5:13 split
25K· 15.53 mi
2:03:32
Rank: #15175 (+554)
Half → 25K
7:50/mi
19:00 split
30K· 18.64 mi
2:28:25
Rank: #14380 (+795)
25K → 30K
8:01/mi
24:53 split
20M
2:39:25
Rank: #14078 (+302)
30K → 20M
8:06/mi
11:00 split
21M
2:48:01
Rank: #13861 (+217)
20M → 21M
8:36/mi
8:36 split
35K· 21.75 mi
2:53:53
Rank: #13736 (+125)
21M → 35K
7:51/mi
5:52 split
23M
3:04:02
Rank: #13526 (+210)
35K → 23M
8:06/mi
10:09 split
24M
3:11:54
Rank: #13366 (+160)
23M → 24M
7:52/mi
7:52 split
40K· 24.85 mi
3:18:45
Rank: #13239 (+127)
24M → 40K
8:01/mi
6:51 split
25.2M
3:21:47
Rank: #13195 (+44)
40K → 25.2M
8:48/mi
3:02 split
Finish· 26.22 mi
3:29:46
Rank: #13151 (+44)
25.2M → Finish
7:50/mi
7:59 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:44:32
Pace7:58 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:45:14
Pace8:02 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:3125:208:0925:20
8:09
-
10K
6.21 mi11:47:1650:058:0424:45
7:58
-0:11
15K
9.32 mi12:11:521:14:418:0124:36
7:55
-0:03
20K
12.43 mi12:36:301:39:198:0024:38
7:56
+0:01
Half
13.11 mi12:41:431:44:327:585:13
7:39
-0:17
25K
15.53 mi13:00:432:03:327:5719:00
7:50
+0:11
30K
18.64 mi13:25:362:28:257:5824:53
8:01
+0:11
20M
20.00 mi13:36:362:39:257:5811:00
8:06
+0:05
21M
21.00 mi13:45:122:48:018:008:36
8:36
+0:30
35K
21.75 mi13:51:042:53:538:005:52
7:51
-0:45
23M
23.00 mi14:01:133:04:028:0010:09
8:06
+0:15
24M
24.00 mi14:09:053:11:548:007:52
7:52
-0:14
40K
24.85 mi14:15:563:18:458:006:51
8:01
+0:09
25.2M
25.20 mi14:18:583:21:478:003:02
8:48
+0:47
Finish
26.22 mi14:26:573:29:468:007:59
7:50
-0:58

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

7:39 /mi

Average Pace

8:00 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:08

94% of race

Time at Steady Pace

11:38

6% of race

Time at Slower Pace

0:00

0% 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 mi11:22:3125:208:0925:20
8:09
#17774
10K
6.21 mi11:47:1650:058:0424:45
7:58
#16974
15K
9.32 mi12:11:521:14:418:0124:36
7:55
#16430
20K
12.43 mi12:36:301:39:198:0024:38
7:56
#15856
Half
13.11 mi12:41:431:44:327:585:13
7:39
#15729
25K
15.53 mi13:00:432:03:327:5719:00
7:50
#15175
30K
18.64 mi13:25:362:28:257:5824:53
8:01
#14380
20M
20.00 mi13:36:362:39:257:5811:00
8:06
#14078
21M
21.00 mi13:45:122:48:018:008:36
8:36
#13861
35K
21.75 mi13:51:042:53:538:005:52
7:51
#13736
23M
23.00 mi14:01:133:04:028:0010:09
8:06
#13526
24M
24.00 mi14:09:053:11:548:007:52
7:52
#13366
40K
24.85 mi14:15:563:18:458:006:51
8:01
#13239
25.2M
25.20 mi14:18:583:21:478:003:02
8:48
#13195
Finish
26.22 mi14:26:573:29:468:007:59
7:50
#13151
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi177746195619515377(Top 54%)4793(Top 39%)4793(Top 768%)
10K6.21 mi3.10 mi16974+8005709+4865709+48616198(Top 57%)5238(Top 43%)5238(Top 839%)
15K9.32 mi3.11 mi16430+5445393+3165393+31615377(Top 54%)4793(Top 39%)4793(Top 768%)
20K12.43 mi3.11 mi15856+5745066+3275066+32714357(Top 51%)4281(Top 35%)4281(Top 686%)
Half13.11 mi0.68 mi15729+1275001+655001+6513043(Top 46%)3529(Top 29%)3529(Top 566%)
25K15.53 mi2.42 mi15175+5544707+2944707+29412656(Top 45%)3480(Top 28%)3480(Top 558%)
30K18.64 mi3.11 mi14380+7954323+3844323+38411463(Top 40%)3018(Top 25%)3018(Top 484%)
20M20.00 mi1.36 mi14078+3024182+1414182+14111104(Top 39%)3001(Top 25%)3001(Top 481%)
21M21.00 mi1.00 mi13861+2174090+924090+9211130(Top 39%)3170(Top 26%)3170(Top 508%)
35K21.75 mi0.75 mi13736+1254044+464044+4611192(Top 39%)3218(Top 26%)3218(Top 516%)
23M23.00 mi1.25 mi13526+2103969+753969+7510820(Top 38%)3143(Top 26%)3143(Top 504%)
24M24.00 mi1.00 mi13366+1603900+693900+6910366(Top 36%)2988(Top 24%)2988(Top 479%)
40K24.85 mi0.85 mi13239+1273863+373863+3710347(Top 36%)3111(Top 25%)3111(Top 499%)
25.2M25.20 mi0.35 mi13195+443849+143849+1410699(Top 38%)3355(Top 27%)3355(Top 538%)
Finish26.22 mi1.02 mi13151+443848+13848+111710(Top 41%)3801(Top 31%)3801(Top 609%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15377

Females

4793

F60-64

4793

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

16198

Females

5238

F60-64

5238

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15377

Females

4793

F60-64

4793

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

14357

Females

4281

F60-64

4281

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13043

Females

3529

F60-64

3529

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12656

Females

3480

F60-64

3480

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

11463

Females

3018

F60-64

3018

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

11104

Females

3001

F60-64

3001

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

11130

Females

3170

F60-64

3170

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

11192

Females

3218

F60-64

3218

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10820

Females

3143

F60-64

3143

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

10366

Females

2988

F60-64

2988

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10347

Females

3111

F60-64

3111

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10699

Females

3355

F60-64

3355

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11710

Females

3801

F60-64

3801

Passing Analysis

Category:
Athletes Passed
4870
Passed By
247
Net Change
+4623
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17774
5K → 10K86666+800#17774#16974
10K → 15K56622+544#16974#16430
15K → 20K59117+574#16430#15856
20K → Half1292+127#15856#15729
Half → 25K5573+554#15729#15175
25K → 30K8016+795#15175#14380
30K → 20M3108+302#14380#14078
20M → 21M23114+217#14078#13861
21M → 35K1338+125#13861#13736
35K → 23M23424+210#13736#13526
23M → 24M17212+160#13526#13366
24M → 40K14518+127#13366#13239
40K → 25.2M528+44#13239#13195
25.2M → Finish8339+44#13195#13151
TOTALS4870247+4623
📊

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