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BOSTON MARATHON 2025

Skyler Williams

Bib: 5351•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Masters (Masters Men)
#0 / 10463
Top 7%
Division (M40-44)
#0 / 2247
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:59
Rank: #3348
Start → 5K
19:59 | 6:26/mi
10K· 6.21 mi
39:57
Rank: #3271 (+77)
5K → 10K
19:58 | 6:26/mi
15K· 9.32 mi
1:00:01
Rank: #3257 (+14)
10K → 15K
20:04 | 6:28/mi
20K· 12.43 mi
1:20:30
Rank: #3344 (-87)
15K → 20K
20:29 | 6:36/mi
Half· 13.11 mi
1:24:56
Rank: #3364 (-20)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:42:10
Rank: #3852 (-488)
Half → 25K
17:14 | 7:06/mi
30K· 18.64 mi
2:03:15
Rank: #3719 (+133)
25K → 30K
21:05 | 6:47/mi
20M
2:12:38
Rank: #3661 (+58)
30K → 20M
9:23 | 6:54/mi
21M
2:19:45
Rank: #3584 (+77)
20M → 21M
7:07 | 7:07/mi
35K· 21.75 mi
2:24:36
Rank: #3503 (+81)
21M → 35K
4:51 | 6:29/mi
23M
2:33:12
Rank: #3417 (+86)
35K → 23M
8:36 | 6:52/mi
24M
2:40:09
Rank: #3423 (-6)
23M → 24M
6:57 | 6:57/mi
40K· 24.85 mi
2:46:11
Rank: #3429 (-6)
24M → 40K
6:02 | 7:03/mi
25.2M
2:48:52
Rank: #3424 (+5)
40K → 25.2M
2:41 | 7:47/mi
Finish· 26.22 mi
2:55:47
Rank: #3432 (-8)
25.2M → Finish
6:55 | 6:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:56
Pace6:29 /mi
2nd Half
Distance13.11 mi
Time1:30:51
Pace6:56 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:3719:596:2619:59
6:26
-
10K
6.21 mi10:45:3539:576:2619:58
6:26
0:00
15K
9.32 mi11:05:391:00:016:2620:04
6:28
+0:02
20K
12.43 mi11:26:081:20:306:2920:29
6:36
+0:08
Half
13.11 mi11:30:341:24:566:294:26
6:30
-0:06
25K
15.53 mi11:47:481:42:106:3517:14
7:06
+0:36
30K
18.64 mi12:08:532:03:156:3721:05
6:47
-0:19
20M
20.00 mi12:18:162:12:386:389:23
6:54
+0:07
21M
21.00 mi12:25:232:19:456:397:07
7:07
+0:13
35K
21.75 mi12:30:142:24:366:394:51
6:29
-0:38
23M
23.00 mi12:38:502:33:126:408:36
6:52
+0:23
24M
24.00 mi12:45:472:40:096:406:57
6:57
+0:05
40K
24.85 mi12:51:492:46:116:416:02
7:03
+0:06
25.2M
25.20 mi12:54:302:48:526:422:41
7:47
+0:44
Finish
26.22 mi13:01:252:55:476:436:55
6:47
-1:00

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

6:26 /mi

Average Pace

6:43 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:47

51% of race

Time at Steady Pace

52:56

30% of race

Time at Slower Pace

33:04

19% of race

Average Pace: 6:42 /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 mi10:25:3719:596:2619:59
6:26
#3348
10K
6.21 mi10:45:3539:576:2619:58
6:26
#3271
15K
9.32 mi11:05:391:00:016:2620:04
6:28
#3257
20K
12.43 mi11:26:081:20:306:2920:29
6:36
#3344
Half
13.11 mi11:30:341:24:566:294:26
6:30
#3364
25K
15.53 mi11:47:481:42:106:3517:14
7:06
#3852
30K
18.64 mi12:08:532:03:156:3721:05
6:47
#3719
20M
20.00 mi12:18:162:12:386:389:23
6:54
#3661
21M
21.00 mi12:25:232:19:456:397:07
7:07
#3584
35K
21.75 mi12:30:142:24:366:394:51
6:29
#3503
23M
23.00 mi12:38:502:33:126:408:36
6:52
#3417
24M
24.00 mi12:45:472:40:096:406:57
6:57
#3423
40K
24.85 mi12:51:492:46:116:416:02
7:03
#3429
25.2M
25.20 mi12:54:302:48:526:422:41
7:47
#3424
Finish
26.22 mi13:01:252:55:476:436:55
6:47
#3432
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3348318031803307(Top 12%)3141(Top 20%)3141(Top 140%)
10K6.21 mi3.10 mi3271+773108+723108+723227(Top 11%)3068(Top 19%)3068(Top 137%)
15K9.32 mi3.11 mi3257+143097+113097+113307(Top 12%)3141(Top 20%)3141(Top 140%)
20K12.43 mi3.11 mi3344-873177-803177-803655(Top 13%)3452(Top 21%)3452(Top 154%)
Half13.11 mi0.68 mi3364-203194-173194-173691(Top 13%)3491(Top 22%)3491(Top 155%)
25K15.53 mi2.42 mi3852-4883629-4353629-4357014(Top 25%)6127(Top 38%)6127(Top 273%)
30K18.64 mi3.11 mi3719+1333509+1203509+1203363(Top 12%)3141(Top 20%)3141(Top 140%)
20M20.00 mi1.36 mi3661+583451+583451+583563(Top 13%)3285(Top 20%)3285(Top 146%)
21M21.00 mi1.00 mi3584+773377+743377+742781(Top 10%)2584(Top 16%)2584(Top 115%)
35K21.75 mi0.75 mi3503+813305+723305+722423(Top 9%)2266(Top 14%)2266(Top 101%)
23M23.00 mi1.25 mi3417+863219+863219+863070(Top 11%)2809(Top 17%)2809(Top 125%)
24M24.00 mi1.00 mi3423-63220-13220-14359(Top 15%)3811(Top 24%)3811(Top 170%)
40K24.85 mi0.85 mi3429-63216+43216+44216(Top 15%)3653(Top 23%)3653(Top 163%)
25.2M25.20 mi0.35 mi3424+53207+93207+94768(Top 17%)3966(Top 25%)3966(Top 177%)
Finish26.22 mi1.02 mi3432-83209-23209-24430(Top 16%)3746(Top 23%)3746(Top 167%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3307

Males

3141

M40-44

3141

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3227

Males

3068

M40-44

3068

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3307

Males

3141

M40-44

3141

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3655

Males

3452

M40-44

3452

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3691

Males

3491

M40-44

3491

Half→25K

13.1 - 15.5 mi

Top 25%
×4stories
+66ft-88ft

Overall

7014

Males

6127

M40-44

6127

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3363

Males

3141

M40-44

3141

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3563

Males

3285

M40-44

3285

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2781

Males

2584

M40-44

2584

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2423

Males

2266

M40-44

2266

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

3070

Males

2809

M40-44

2809

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4359

Males

3811

M40-44

3811

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4216

Males

3653

M40-44

3653

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4768

Males

3966

M40-44

3966

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4430

Males

3746

M40-44

3746

Passing Analysis

Category:
Athletes Passed
1055
Passed By
1139
Net Change
-84
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3348
5K → 10K16891+77#3348#3271
10K → 15K10288+14#3271#3257
15K → 20K65152-87#3257#3344
20K → Half1131-20#3344#3364
Half → 25K15503-488#3364#3852
25K → 30K17542+133#3852#3719
30K → 20M8426+58#3719#3661
20M → 21M8912+77#3661#3584
21M → 35K865+81#3584#3503
35K → 23M10923+86#3503#3417
23M → 24M4753-6#3417#3423
24M → 40K3743-6#3423#3429
40K → 25.2M2217+5#3429#3424
25.2M → Finish4553-8#3424#3432
TOTALS10551139-84
📊

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