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BOSTON MARATHON 2023

Brian Dewsnup

Bib: 15286•M

KY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
7:52/mi
24:25
↑ 97↓ 3451.5%
10K· 6.21 mi
8:03/mi
49:26
↑ 79↓ 1380.4%
15K· 9.32 mi
8:09/mi
1:14:44
↑ 67↓ 78
20K· 12.43 mi
8:16/mi
1:40:25
↑ 106↓ 860.1%
Half· 13.11 mi
8:17/mi
1:46:04
↑ 19↓ 370.5%
25K· 15.53 mi
8:31/mi
2:06:43
↑ 66↓ 880.2%
30K· 18.64 mi
8:44/mi
2:33:50
↑ 181↓ 1480.2%
20M
8:39/mi
2:45:35
↑ 64↓ 500.2%
21M
9:22/mi
2:54:57
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:01:22
↑ 17↓ 861.7%
23M
9:10/mi
3:12:51
↑ 23↓ 630.6%
24M
8:46/mi
3:21:37
↓ 821.3%
40K· 24.85 mi
8:50/mi
3:29:10
↓ 200.3%
25.2M
9:25/mi
3:32:25
↑ 13↓ 160.2%
Finish· 26.22 mi
8:50/mi
3:41:25
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:04
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:55:21
Pace8:48 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:0224:257:5224:25
7:52
-
10K
6.21 mi11:20:0349:267:5725:01
8:03
+0:11
15K
9.32 mi11:45:211:14:448:0125:18
8:09
+0:06
20K
12.43 mi12:11:021:40:258:0525:41
8:16
+0:07
Half
13.11 mi12:16:411:46:048:055:39
8:17
+0:01
25K
15.53 mi12:37:202:06:438:0920:39
8:31
+0:14
30K
18.64 mi13:04:272:33:508:1527:07
8:44
+0:13
20M
20.00 mi13:16:122:45:358:1711:45
8:39
-0:05
21M
21.00 mi13:25:342:54:578:209:22
9:22
+0:43
35K
21.75 mi13:31:593:01:228:206:25
8:35
-0:47
23M
23.00 mi13:43:283:12:518:2311:29
9:10
+0:35
24M
24.00 mi13:52:143:21:378:248:46
8:46
-0:24
40K
24.85 mi13:59:473:29:108:257:33
8:50
+0:04
25.2M
25.20 mi14:03:023:32:258:263:15
9:25
+0:35
Finish
26.22 mi14:12:023:41:258:279:00
8:50
-0:35

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

7:52 /mi

Average Pace

8:27 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:53

65% of race

Time at Steady Pace

1:03:55

29% of race

Time at Slower Pace

12:37

6% of race

Average Pace: 8:27 /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 mi10:55:0224:257:5224:25
7:52
#12913
10K
6.21 mi11:20:0349:267:5725:01
8:03
#14027
15K
9.32 mi11:45:211:14:448:0125:18
8:09
#14479
20K
12.43 mi12:11:021:40:258:0525:41
8:16
#14726
Half
13.11 mi12:16:411:46:048:055:39
8:17
#14807
25K
15.53 mi12:37:202:06:438:0920:39
8:31
#15046
30K
18.64 mi13:04:272:33:508:1527:07
8:44
#15142
20M
20.00 mi13:16:122:45:358:1711:45
8:39
#15088
21M
21.00 mi13:25:342:54:578:209:22
9:22
#15091
35K
21.75 mi13:31:593:01:228:206:25
8:35
#15107
23M
23.00 mi13:43:283:12:518:2311:29
9:10
#15193
24M
24.00 mi13:52:143:21:378:248:46
8:46
#15212
40K
24.85 mi13:59:473:29:108:257:33
8:50
#15210
25.2M
25.20 mi14:03:023:32:258:263:15
9:25
#15193
Finish
26.22 mi14:12:023:41:258:279:00
8:50
#15281
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi129139506950615446(Top 58%)10482(Top 69%)10482(Top 511%)
10K6.21 mi3.10 mi14027-11149949-4439949-44315179(Top 57%)10380(Top 68%)10380(Top 506%)
15K9.32 mi3.11 mi14479-45210116-16710116-16715446(Top 58%)10482(Top 69%)10482(Top 511%)
20K12.43 mi3.11 mi14726-24710194-7810194-7815382(Top 58%)10411(Top 69%)10411(Top 507%)
Half13.11 mi0.68 mi14807-8110228-3410228-3416306(Top 61%)10792(Top 71%)10792(Top 526%)
25K15.53 mi2.42 mi15046-23910288-6010288-6016284(Top 61%)10657(Top 70%)10657(Top 519%)
30K18.64 mi3.11 mi15142-9610272+1610272+1615649(Top 59%)10328(Top 68%)10328(Top 503%)
20M20.00 mi1.36 mi15088+5410241+3110241+3114542(Top 55%)9796(Top 65%)9796(Top 477%)
21M21.00 mi1.00 mi15091-310218+2310218+2315316(Top 58%)10059(Top 66%)10059(Top 490%)
35K21.75 mi0.75 mi15107-1610205+1310205+1315693(Top 59%)10148(Top 67%)10148(Top 495%)
23M23.00 mi1.25 mi15193-8610215-1010215-1016895(Top 63%)10642(Top 70%)10642(Top 519%)
24M24.00 mi1.00 mi15212-1910208+710208+716008(Top 60%)10176(Top 67%)10176(Top 496%)
40K24.85 mi0.85 mi15210+210192+1610192+1615218(Top 57%)9784(Top 64%)9784(Top 477%)
25.2M25.20 mi0.35 mi15193+1710169+2310169+2314771(Top 55%)9575(Top 63%)9575(Top 467%)
Finish26.22 mi1.02 mi15281-8810192-2310192-2317177(Top 65%)10679(Top 70%)10679(Top 520%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

15446

Males

10482

M50-54

10482

5K→10K

3.1 - 6.2 mi

Top 57%
×5story building
+79ft-138ft

Overall

15179

Males

10380

M50-54

10380

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

15446

Males

10482

M50-54

10482

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

15382

Males

10411

M50-54

10411

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16306

Males

10792

M50-54

10792

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

16284

Males

10657

M50-54

10657

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

15649

Males

10328

M50-54

10328

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14542

Males

9796

M50-54

9796

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

15316

Males

10059

M50-54

10059

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15693

Males

10148

M50-54

10148

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16895

Males

10642

M50-54

10642

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

16008

Males

10176

M50-54

10176

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15218

Males

9784

M50-54

9784

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14771

Males

9575

M50-54

9575

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17177

Males

10679

M50-54

10679

Passing Analysis

Category:
Athletes Passed
953
Passed By
3321
Net Change
-2368
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12913
5K → 10K391153-1114#12913#14027
10K → 15K73525-452#14027#14479
15K → 20K108355-247#14479#14726
20K → Half1192-81#14726#14807
Half → 25K79318-239#14807#15046
25K → 30K144240-96#15046#15142
30K → 20M10753+54#15142#15088
20M → 21M9194-3#15088#15091
21M → 35K3753-16#15091#15107
35K → 23M55141-86#15107#15193
23M → 24M6483-19#15193#15212
24M → 40K5957+2#15212#15210
40K → 25.2M4831+17#15210#15193
25.2M → Finish38126-88#15193#15281
TOTALS9533321-2368
📊

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