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BOSTON MARATHON 2025

Brent Williams

Bib: 781•M

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0:00
0:00
/ mi
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Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 4%
Division (M18-39)
#0 / 5642
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:33
Rank: #981
Start → 5K
18:33 | 5:58/mi
10K· 6.21 mi
36:59
Rank: #945 (+36)
5K → 10K
18:26 | 5:56/mi
15K· 9.32 mi
55:39
Rank: #976 (-31)
10K → 15K
18:40 | 6:00/mi
20K· 12.43 mi
1:14:18
Rank: #936 (+40)
15K → 20K
18:39 | 6:00/mi
Half· 13.11 mi
1:18:20
Rank: #933 (+3)
20K → Half
4:02 | 5:55/mi
25K· 15.53 mi
1:33:01
Rank: #921 (+12)
Half → 25K
14:41 | 6:03/mi
30K· 18.64 mi
1:51:48
Rank: #821 (+100)
25K → 30K
18:47 | 6:03/mi
20M
2:00:07
Rank: #785 (+36)
30K → 20M
8:19 | 6:07/mi
21M
2:06:30
Rank: #753 (+32)
20M → 21M
6:23 | 6:23/mi
35K· 21.75 mi
2:10:56
Rank: #733 (+20)
21M → 35K
4:26 | 5:56/mi
23M
2:18:39
Rank: #705 (+28)
35K → 23M
7:43 | 6:10/mi
24M
2:24:49
Rank: #703 (+2)
23M → 24M
6:10 | 6:10/mi
40K· 24.85 mi
2:30:17
Rank: #704 (-1)
24M → 40K
5:28 | 6:24/mi
25.2M
2:32:41
Rank: #693 (+11)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:39:08
Rank: #724 (-31)
25.2M → Finish
6:27 | 6:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:20
Pace5:59 /mi
2nd Half
Distance13.11 mi
Time1:20:48
Pace6:10 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:4718:335:5818:33
5:58
-
10K
6.21 mi10:37:1336:595:5718:26
5:56
-0:02
15K
9.32 mi10:55:5355:395:5818:40
6:00
+0:04
20K
12.43 mi11:14:321:14:185:5918:39
6:00
0:00
Half
13.11 mi11:18:341:18:205:594:02
5:55
-0:05
25K
15.53 mi11:33:151:33:015:5914:41
6:03
+0:08
30K
18.64 mi11:52:021:51:486:0018:47
6:03
0:00
20M
20.00 mi12:00:212:00:076:008:19
6:07
+0:04
21M
21.00 mi12:06:442:06:306:016:23
6:23
+0:16
35K
21.75 mi12:11:102:10:566:014:26
5:56
-0:27
23M
23.00 mi12:18:532:18:396:027:43
6:10
+0:14
24M
24.00 mi12:25:032:24:496:026:10
6:10
0:00
40K
24.85 mi12:30:312:30:176:035:28
6:24
+0:14
25.2M
25.20 mi12:32:552:32:416:042:24
6:58
+0:34
Finish
26.22 mi12:39:222:39:086:046:27
6:20
-0:38

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

5:55 /mi

Average Pace

6:04 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:44

98% of race

Time at Steady Pace

2:24

2% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:04 /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 mi10:18:4718:335:5818:33
5:58
#981
10K
6.21 mi10:37:1336:595:5718:26
5:56
#945
15K
9.32 mi10:55:5355:395:5818:40
6:00
#976
20K
12.43 mi11:14:321:14:185:5918:39
6:00
#936
Half
13.11 mi11:18:341:18:205:594:02
5:55
#933
25K
15.53 mi11:33:151:33:015:5914:41
6:03
#921
30K
18.64 mi11:52:021:51:486:0018:47
6:03
#821
20M
20.00 mi12:00:212:00:076:008:19
6:07
#785
21M
21.00 mi12:06:442:06:306:016:23
6:23
#753
35K
21.75 mi12:11:102:10:566:014:26
5:56
#733
23M
23.00 mi12:18:532:18:396:027:43
6:10
#705
24M
24.00 mi12:25:032:24:496:026:10
6:10
#703
40K
24.85 mi12:30:312:30:176:035:28
6:24
#704
25.2M
25.20 mi12:32:552:32:416:042:24
6:58
#693
Finish
26.22 mi12:39:222:39:086:046:27
6:20
#724
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9819229221054(Top 4%)996(Top 6%)996(Top 18%)
10K6.21 mi3.10 mi945+36888+34888+34912(Top 3%)858(Top 5%)858(Top 15%)
15K9.32 mi3.11 mi976-31919-31919-311054(Top 4%)996(Top 6%)996(Top 18%)
20K12.43 mi3.11 mi936+40881+38881+38871(Top 3%)820(Top 5%)820(Top 15%)
Half13.11 mi0.68 mi933+3878+3878+3860(Top 3%)812(Top 5%)812(Top 14%)
25K15.53 mi2.42 mi921+12868+10868+10940(Top 3%)885(Top 5%)885(Top 16%)
30K18.64 mi3.11 mi821+100771+97771+97570(Top 2%)532(Top 3%)532(Top 9%)
20M20.00 mi1.36 mi785+36735+36735+36571(Top 2%)537(Top 3%)537(Top 10%)
21M21.00 mi1.00 mi753+32704+31704+31493(Top 2%)464(Top 3%)464(Top 8%)
35K21.75 mi0.75 mi733+20685+19685+19574(Top 2%)533(Top 3%)533(Top 9%)
23M23.00 mi1.25 mi705+28657+28657+28591(Top 2%)556(Top 3%)556(Top 10%)
24M24.00 mi1.00 mi703+2654+3654+3923(Top 3%)868(Top 5%)868(Top 15%)
40K24.85 mi0.85 mi704-1655-1655-11221(Top 4%)1134(Top 7%)1134(Top 20%)
25.2M25.20 mi0.35 mi693+11644+11644+111322(Top 5%)1209(Top 8%)1209(Top 21%)
Finish26.22 mi1.02 mi724-31674-30674-301989(Top 7%)1826(Top 11%)1826(Top 32%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1054

Males

996

M18-39

996

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

912

Males

858

M18-39

858

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1054

Males

996

M18-39

996

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

871

Males

820

M18-39

820

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

860

Males

812

M18-39

812

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

940

Males

885

M18-39

885

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

570

Males

532

M18-39

532

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

571

Males

537

M18-39

537

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

493

Males

464

M18-39

464

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

574

Males

533

M18-39

533

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

591

Males

556

M18-39

556

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

923

Males

868

M18-39

868

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1221

Males

1134

M18-39

1134

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1322

Males

1209

M18-39

1209

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1989

Males

1826

M18-39

1826

Passing Analysis

Category:
Athletes Passed
436
Passed By
179
Net Change
+257
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#981
5K → 10K6630+36#981#945
10K → 15K1344-31#945#976
15K → 20K5414+40#976#936
20K → Half52+3#936#933
Half → 25K3220+12#933#921
25K → 30K1066+100#921#821
30K → 20M382+36#821#785
20M → 21M342+32#785#753
21M → 35K200+20#753#733
35K → 23M313+28#733#705
23M → 24M119+2#705#703
24M → 40K1011-1#703#704
40K → 25.2M132+11#704#693
25.2M → Finish334-31#693#724
TOTALS436179+257
📊

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