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BOSTON MARATHON 2023

Larry Williams

Bib: 25582•M

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/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
9:36/mi
29:49
↑ 97↓ 3451.5%
10K· 6.21 mi
9:41/mi
59:54
↑ 79↓ 1380.4%
15K· 9.32 mi
9:54/mi
1:30:39
↑ 67↓ 78
20K· 12.43 mi
10:03/mi
2:01:52
↑ 106↓ 860.1%
Half· 13.11 mi
9:29/mi
2:08:20
↑ 19↓ 370.5%
25K· 15.53 mi
10:29/mi
2:33:44
↑ 66↓ 880.2%
30K· 18.64 mi
11:01/mi
3:07:57
↑ 181↓ 1480.2%
20M
11:27/mi
3:23:31
↑ 64↓ 500.2%
21M
13:21/mi
3:36:52
↑ 106↓ 241.6%
35K· 21.75 mi
10:20/mi
3:44:36
↑ 17↓ 861.7%
23M
11:20/mi
3:58:48
↑ 23↓ 630.6%
24M
11:02/mi
4:09:50
↓ 821.3%
40K· 24.85 mi
10:49/mi
4:19:05
↓ 200.3%
25.2M
14:47/mi
4:24:11
↑ 13↓ 160.2%
Finish· 26.22 mi
10:14/mi
4:34:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:08:20
Pace9:47 /mi
2nd Half
Distance13.11 mi
Time2:26:17
Pace11:10 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5829:499:3629:49
9:36
-
10K
6.21 mi12:16:0359:549:3830:05
9:41
+0:05
15K
9.32 mi12:46:481:30:399:4430:45
9:54
+0:13
20K
12.43 mi13:18:012:01:529:4831:13
10:03
+0:09
Half
13.11 mi13:24:292:08:209:476:28
9:29
-0:34
25K
15.53 mi13:49:532:33:449:5425:24
10:29
+1:00
30K
18.64 mi14:24:063:07:5710:0534:13
11:01
+0:32
20M
20.00 mi14:39:403:23:3110:1115:34
11:27
+0:26
21M
21.00 mi14:53:013:36:5210:2013:21
13:21
+1:54
35K
21.75 mi15:00:453:44:3610:207:44
10:20
-3:01
23M
23.00 mi15:14:573:58:4810:2314:12
11:20
+1:00
24M
24.00 mi15:25:594:09:5010:2511:02
11:02
-0:18
40K
24.85 mi15:35:144:19:0510:259:15
10:49
-0:13
25.2M
25.20 mi15:40:204:24:1110:295:06
14:47
+3:58
Finish
26.22 mi15:50:464:34:3710:2910:26
10:14
-4:33

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

9:29 /mi

Average Pace

10:29 /mi

Slowest Pace

14:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:06:22

24% of race

Time at Steady Pace

2:40:02

58% of race

Time at Slower Pace

48:13

18% of race

Average Pace: 10:28 /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 mi11:45:5829:499:3629:49
9:36
#22365
10K
6.21 mi12:16:0359:549:3830:05
9:41
#22721
15K
9.32 mi12:46:481:30:399:4430:45
9:54
#22956
20K
12.43 mi13:18:012:01:529:4831:13
10:03
#22961
Half
13.11 mi13:24:292:08:209:476:28
9:29
#22899
25K
15.53 mi13:49:532:33:449:5425:24
10:29
#22946
30K
18.64 mi14:24:063:07:5710:0534:13
11:01
#22993
20M
20.00 mi14:39:403:23:3110:1115:34
11:27
#23031
21M
21.00 mi14:53:013:36:5210:2013:21
13:21
#23155
35K
21.75 mi15:00:453:44:3610:207:44
10:20
#23112
23M
23.00 mi15:14:573:58:4810:2314:12
11:20
#23100
24M
24.00 mi15:25:594:09:5010:2511:02
11:02
#23095
40K
24.85 mi15:35:144:19:0510:259:15
10:49
#23039
25.2M
25.20 mi15:40:204:24:1110:295:06
14:47
#23115
Finish
26.22 mi15:50:464:34:3710:2910:26
10:14
#23079
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22365132891328923295(Top 88%)13783(Top 91%)13783(Top 612%)
10K6.21 mi3.10 mi22721-35613490-20113490-20123008(Top 86%)13651(Top 90%)13651(Top 606%)
15K9.32 mi3.11 mi22956-23513602-11213602-11223295(Top 88%)13783(Top 91%)13783(Top 612%)
20K12.43 mi3.11 mi22961-513615-1313615-1323011(Top 86%)13635(Top 90%)13635(Top 605%)
Half13.11 mi0.68 mi22899+6213584+3113584+3122056(Top 83%)13226(Top 87%)13226(Top 587%)
25K15.53 mi2.42 mi22946-4713592-813592-823153(Top 87%)13662(Top 90%)13662(Top 607%)
30K18.64 mi3.11 mi22993-4713594-213594-223107(Top 87%)13569(Top 89%)13569(Top 603%)
20M20.00 mi1.36 mi23031-3813595-113595-123452(Top 88%)13668(Top 90%)13668(Top 607%)
21M21.00 mi1.00 mi23155-12413644-4913644-4924437(Top 92%)14104(Top 93%)14104(Top 626%)
35K21.75 mi0.75 mi23112+4313613+3113613+3122073(Top 83%)12961(Top 85%)12961(Top 576%)
23M23.00 mi1.25 mi23100+1213603+1013603+1022967(Top 86%)13375(Top 88%)13375(Top 594%)
24M24.00 mi1.00 mi23095+513590+1313590+1323107(Top 87%)13397(Top 88%)13397(Top 595%)
40K24.85 mi0.85 mi23039+5613550+4013550+4021967(Top 83%)12814(Top 84%)12814(Top 569%)
25.2M25.20 mi0.35 mi23115-7613589-3913589-3925571(Top 96%)14582(Top 96%)14582(Top 648%)
Finish26.22 mi1.02 mi23079+3613572+1713572+1722386(Top 84%)13043(Top 86%)13043(Top 579%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

23295

Males

13783

M45-49

13783

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

23008

Males

13651

M45-49

13651

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

23295

Males

13783

M45-49

13783

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

23011

Males

13635

M45-49

13635

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

22056

Males

13226

M45-49

13226

Half→25K

13.1 - 15.5 mi

Top 87%
×4story building
+66ft-88ft

Overall

23153

Males

13662

M45-49

13662

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

23107

Males

13569

M45-49

13569

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23452

Males

13668

M45-49

13668

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24437

Males

14104

M45-49

14104

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

22073

Males

12961

M45-49

12961

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22967

Males

13375

M45-49

13375

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23107

Males

13397

M45-49

13397

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

21967

Males

12814

M45-49

12814

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

25571

Males

14582

M45-49

14582

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

22386

Males

13043

M45-49

13043

Passing Analysis

Category:
Athletes Passed
892
Passed By
1606
Net Change
-714
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22365
5K → 10K111467-356#22365#22721
10K → 15K76311-235#22721#22956
15K → 20K128133-5#22956#22961
20K → Half664+62#22961#22899
Half → 25K81128-47#22899#22946
25K → 30K100147-47#22946#22993
30K → 20M5088-38#22993#23031
20M → 21M15139-124#23031#23155
21M → 35K507+43#23155#23112
35K → 23M5644+12#23112#23100
23M → 24M4035+5#23100#23095
24M → 40K6913+56#23095#23039
40K → 25.2M177-76#23039#23115
25.2M → Finish4913+36#23115#23079
TOTALS8921606-714
📊

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