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BOSTON MARATHON 2023

William Spencer

Bib: 26668•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:25
Rank: #24557
Start → 5K
32:25 | 10:26/mi
10K· 6.21 mi
1:05:32
Rank: #24797 (-240)
5K → 10K
33:07 | 10:40/mi
15K· 9.32 mi
1:40:32
Rank: #25116 (-319)
10K → 15K
35:00 | 11:16/mi
20K· 12.43 mi
2:20:42
Rank: #25610 (-494)
15K → 20K
40:10 | 12:56/mi
Half· 13.11 mi
2:29:19
Rank: #25676 (-66)
20K → Half
8:37 | 12:38/mi
25K· 15.53 mi
3:08:29
Rank: #26102 (-426)
Half → 25K
39:10 | 16:09/mi
30K· 18.64 mi
3:54:10
Rank: #26169 (-67)
25K → 30K
45:41 | 14:42/mi
20M
4:14:12
Rank: #26184 (-15)
30K → 20M
20:02 | 14:45/mi
21M
4:30:25
Rank: #26194 (-10)
20M → 21M
16:13 | 16:13/mi
35K· 21.75 mi
4:41:43
Rank: #26219 (-25)
21M → 35K
11:18 | 15:06/mi
23M
5:01:38
Rank: #26280 (-61)
35K → 23M
19:55 | 15:54/mi
24M
5:18:30
Rank: #26346 (-66)
23M → 24M
16:52 | 16:52/mi
40K· 24.85 mi
5:32:19
Rank: #26369 (-23)
24M → 40K
13:49 | 16:10/mi
25.2M
5:38:37
Rank: #26387 (-18)
40K → 25.2M
6:18 | 18:16/mi
Finish· 26.22 mi
5:53:51
Rank: #26419 (-32)
25.2M → Finish
15:14 | 14:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:29:19
Pace11:23 /mi
2nd Half
Distance13.11 mi
Time3:24:32
Pace15:36 /mi
📊Positive Split: 37.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:5232:2510:2632:25
10:26
-
10K
6.21 mi12:21:591:05:3210:3333:07
10:40
+0:14
15K
9.32 mi12:56:591:40:3210:4735:00
11:16
+0:36
20K
12.43 mi13:37:092:20:4211:1940:10
12:56
+1:40
Half
13.11 mi13:45:462:29:1911:238:37
12:38
-0:18
25K
15.53 mi14:24:563:08:2912:0839:10
16:09
+3:31
30K
18.64 mi15:10:373:54:1012:3445:41
14:42
-1:27
20M
20.00 mi15:30:394:14:1212:4320:02
14:45
+0:03
21M
21.00 mi15:46:524:30:2512:5316:13
16:13
+1:28
35K
21.75 mi15:58:104:41:4312:5711:18
15:06
-1:07
23M
23.00 mi16:18:055:01:3813:0719:55
15:54
+0:48
24M
24.00 mi16:34:575:18:3013:1616:52
16:52
+0:58
40K
24.85 mi16:48:465:32:1913:2213:49
16:10
-0:42
25.2M
25.20 mi16:55:045:38:3713:266:18
18:16
+2:06
Finish
26.22 mi17:10:185:53:5113:3015:14
14:57
-3:19

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

10:26 /mi

Average Pace

13:30 /mi

Slowest Pace

18:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:29:19

42% of race

Time at Steady Pace

1:52:10

32% of race

Time at Slower Pace

1:32:22

26% of race

Average Pace: 13:30 /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 mi11:48:5232:2510:2632:25
10:26
#24557
10K
6.21 mi12:21:591:05:3210:3333:07
10:40
#24797
15K
9.32 mi12:56:591:40:3210:4735:00
11:16
#25116
20K
12.43 mi13:37:092:20:4211:1940:10
12:56
#25610
Half
13.11 mi13:45:462:29:1911:238:37
12:38
#25676
25K
15.53 mi14:24:563:08:2912:0839:10
16:09
#26102
30K
18.64 mi15:10:373:54:1012:3445:41
14:42
#26169
20M
20.00 mi15:30:394:14:1212:4320:02
14:45
#26184
21M
21.00 mi15:46:524:30:2512:5316:13
16:13
#26194
35K
21.75 mi15:58:104:41:4312:5711:18
15:06
#26219
23M
23.00 mi16:18:055:01:3813:0719:55
15:54
#26280
24M
24.00 mi16:34:575:18:3013:1616:52
16:52
#26346
40K
24.85 mi16:48:465:32:1913:2213:49
16:10
#26369
25.2M
25.20 mi16:55:045:38:3713:266:18
18:16
#26387
Finish
26.22 mi17:10:185:53:5113:3015:14
14:57
#26419
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24557143411434125486(Top 96%)14725(Top 97%)14725(Top 279%)
10K6.21 mi3.10 mi24797-24014453-11214453-11224953(Top 94%)14515(Top 96%)14515(Top 275%)
15K9.32 mi3.11 mi25116-31914591-13814591-13825486(Top 96%)14725(Top 97%)14725(Top 279%)
20K12.43 mi3.11 mi25610-49414774-18314774-18326198(Top 98%)15005(Top 99%)15005(Top 284%)
Half13.11 mi0.68 mi25676-6614797-2314797-2326226(Top 99%)15004(Top 99%)15004(Top 284%)
25K15.53 mi2.42 mi26102-42614975-17814975-17826608(Top 100%)15170(Top 100%)15170(Top 287%)
30K18.64 mi3.11 mi26169-6714990-1514990-1526331(Top 99%)15038(Top 99%)15038(Top 285%)
20M20.00 mi1.36 mi26184-1514996-614996-626205(Top 98%)14950(Top 99%)14950(Top 283%)
21M21.00 mi1.00 mi26194-1014997-114997-126282(Top 99%)14997(Top 99%)14997(Top 284%)
35K21.75 mi0.75 mi26219-2515001-415001-426427(Top 99%)15067(Top 99%)15067(Top 285%)
23M23.00 mi1.25 mi26280-6115029-2815029-2826476(Top 99%)15090(Top 99%)15090(Top 286%)
24M24.00 mi1.00 mi26346-6615058-2915058-2926571(Top 100%)15144(Top 100%)15144(Top 287%)
40K24.85 mi0.85 mi26369-2315067-915067-926449(Top 99%)15068(Top 99%)15068(Top 285%)
25.2M25.20 mi0.35 mi26387-1815071-415071-426525(Top 100%)15116(Top 100%)15116(Top 286%)
Finish26.22 mi1.02 mi26419-3215083-1215083-1226498(Top 100%)15091(Top 99%)15091(Top 286%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 96%
×21stories
+97ft-345ft

Overall

25486

Males

14725

M18-39

14725

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

24953

Males

14515

M18-39

14515

10K→15K

6.2 - 9.3 mi

Top 96%
×3stories
+67ft-78ft

Overall

25486

Males

14725

M18-39

14725

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

26198

Males

15005

M18-39

15005

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

26226

Males

15004

M18-39

15004

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

26608

Males

15170

M18-39

15170

25K→30K

15.5 - 18.6 mi

Top 99%
×9stories
+181ft-148ft

Overall

26331

Males

15038

M18-39

15038

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

26205

Males

14950

M18-39

14950

20M→21M

20.0 - 21.0 mi

Top 99%
×8stories
+106ft-24ft

Overall

26282

Males

14997

M18-39

14997

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

26427

Males

15067

M18-39

15067

35K→23M

21.8 - 23.0 mi

Top 99%
×5stories
+23ft-63ft

Overall

26476

Males

15090

M18-39

15090

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

26571

Males

15144

M18-39

15144

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26449

Males

15068

M18-39

15068

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

26525

Males

15116

M18-39

15116

25.2M→Finish

25.2 - 26.2 mi

Top 100%
×2stories
+22ft-21ft

Overall

26498

Males

15091

M18-39

15091

Passing Analysis

Category:
Athletes Passed
192
Passed By
2054
Net Change
-1862
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24557
5K → 10K97337-240#24557#24797
10K → 15K27346-319#24797#25116
15K → 20K9503-494#25116#25610
20K → Half571-66#25610#25676
Half → 25K2428-426#25676#26102
25K → 30K1986-67#26102#26169
30K → 20M1126-15#26169#26184
20M → 21M1121-10#26184#26194
21M → 35K530-25#26194#26219
35K → 23M364-61#26219#26280
23M → 24M066-66#26280#26346
24M → 40K326-23#26346#26369
40K → 25.2M018-18#26369#26387
25.2M → Finish032-32#26387#26419
TOTALS1922054-1862
📊

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