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BOSTON MARATHON 2023

Michael Dalsey

Bib: 21755•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:50
Rank: #18454
Start → 5K
26:50 | 8:38/mi
10K· 6.21 mi
53:58
Rank: #19016 (-562)
5K → 10K
27:08 | 8:44/mi
15K· 9.32 mi
1:21:14
Rank: #19129 (-113)
10K → 15K
27:16 | 8:47/mi
20K· 12.43 mi
1:49:13
Rank: #19270 (-141)
15K → 20K
27:59 | 9:00/mi
Half· 13.11 mi
1:55:18
Rank: #19290 (-20)
20K → Half
6:05 | 8:55/mi
25K· 15.53 mi
2:17:28
Rank: #19346 (-56)
Half → 25K
22:10 | 9:09/mi
30K· 18.64 mi
2:46:42
Rank: #19322 (+24)
25K → 30K
29:14 | 9:25/mi
20M
2:59:34
Rank: #19260 (+62)
30K → 20M
12:52 | 9:28/mi
21M
3:09:27
Rank: #19144 (+116)
20M → 21M
9:53 | 9:53/mi
35K· 21.75 mi
3:16:07
Rank: #19096 (+48)
21M → 35K
6:40 | 8:55/mi
23M
3:27:51
Rank: #19017 (+79)
35K → 23M
11:44 | 9:22/mi
24M
3:36:46
Rank: #18916 (+101)
23M → 24M
8:55 | 8:55/mi
40K· 24.85 mi
3:44:31
Rank: #18814 (+102)
24M → 40K
7:45 | 9:04/mi
25.2M
3:47:48
Rank: #18764 (+50)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:56:50
Rank: #18733 (+31)
25.2M → Finish
9:02 | 8:52/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:18
Pace8:48 /mi
2nd Half
Distance13.11 mi
Time2:01:32
Pace9:16 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:2226:508:3826:50
8:38
-
10K
6.21 mi11:47:3053:588:4127:08
8:44
+0:06
15K
9.32 mi12:14:461:21:148:4327:16
8:47
+0:03
20K
12.43 mi12:42:451:49:138:4727:59
9:00
+0:13
Half
13.11 mi12:48:501:55:188:486:05
8:55
-0:05
25K
15.53 mi13:11:002:17:288:5122:10
9:09
+0:14
30K
18.64 mi13:40:142:46:428:5729:14
9:25
+0:16
20M
20.00 mi13:53:062:59:348:5912:52
9:28
+0:03
21M
21.00 mi14:02:593:09:279:019:53
9:53
+0:25
35K
21.75 mi14:09:393:16:079:016:40
8:55
-0:58
23M
23.00 mi14:21:233:27:519:0211:44
9:22
+0:27
24M
24.00 mi14:30:183:36:469:028:55
8:55
-0:27
40K
24.85 mi14:38:033:44:319:027:45
9:04
+0:09
25.2M
25.20 mi14:41:203:47:489:023:17
9:31
+0:27
Finish
26.22 mi14:50:223:56:509:029:02
8:52
-0:39

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

8:38 /mi

Average Pace

9:02 /mi

Slowest Pace

9:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:43:40

94% of race

Time at Steady Pace

13:10

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:02 /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 mi11:20:2226:508:3826:50
8:38
#18454
10K
6.21 mi11:47:3053:588:4127:08
8:44
#19016
15K
9.32 mi12:14:461:21:148:4327:16
8:47
#19129
20K
12.43 mi12:42:451:49:138:4727:59
9:00
#19270
Half
13.11 mi12:48:501:55:188:486:05
8:55
#19290
25K
15.53 mi13:11:002:17:288:5122:10
9:09
#19346
30K
18.64 mi13:40:142:46:428:5729:14
9:25
#19322
20M
20.00 mi13:53:062:59:348:5912:52
9:28
#19260
21M
21.00 mi14:02:593:09:279:019:53
9:53
#19144
35K
21.75 mi14:09:393:16:079:016:40
8:55
#19096
23M
23.00 mi14:21:233:27:519:0211:44
9:22
#19017
24M
24.00 mi14:30:183:36:469:028:55
8:55
#18916
40K
24.85 mi14:38:033:44:319:027:45
9:04
#18814
25.2M
25.20 mi14:41:203:47:489:023:17
9:31
#18764
Finish
26.22 mi14:50:223:56:509:029:02
8:52
#18733
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18454115881158819373(Top 73%)12038(Top 79%)12038(Top 1085%)
10K6.21 mi3.10 mi19016-56211836-24811836-24819590(Top 74%)12126(Top 80%)12126(Top 1092%)
15K9.32 mi3.11 mi19129-11311896-6011896-6019373(Top 73%)12038(Top 79%)12038(Top 1085%)
20K12.43 mi3.11 mi19270-14111966-7011966-7019726(Top 74%)12195(Top 80%)12195(Top 1099%)
Half13.11 mi0.68 mi19290-2011975-911975-920018(Top 75%)12312(Top 81%)12312(Top 1109%)
25K15.53 mi2.42 mi19346-5611999-2411999-2419576(Top 74%)12090(Top 80%)12090(Top 1089%)
30K18.64 mi3.11 mi19322+2411973+2611973+2619072(Top 72%)11816(Top 78%)11816(Top 1065%)
20M20.00 mi1.36 mi19260+6211932+4111932+4118734(Top 70%)11563(Top 76%)11563(Top 1042%)
21M21.00 mi1.00 mi19144+11611876+5611876+5617566(Top 66%)11040(Top 73%)11040(Top 995%)
35K21.75 mi0.75 mi19096+4811848+2811848+2817493(Top 66%)10931(Top 72%)10931(Top 985%)
23M23.00 mi1.25 mi19017+7911803+4511803+4517806(Top 67%)11034(Top 73%)11034(Top 994%)
24M24.00 mi1.00 mi18916+10111748+5511748+5516834(Top 63%)10556(Top 70%)10556(Top 951%)
40K24.85 mi0.85 mi18814+10211688+6011688+6016473(Top 62%)10342(Top 68%)10342(Top 932%)
25.2M25.20 mi0.35 mi18764+5011658+3011658+3015266(Top 57%)9807(Top 65%)9807(Top 884%)
Finish26.22 mi1.02 mi18733+3111645+1311645+1317329(Top 65%)10760(Top 71%)10760(Top 969%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21stories
+97ft-345ft

Overall

19373

Males

12038

M60-64

12038

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

19590

Males

12126

M60-64

12126

10K→15K

6.2 - 9.3 mi

Top 73%
×3stories
+67ft-78ft

Overall

19373

Males

12038

M60-64

12038

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

19726

Males

12195

M60-64

12195

20K→Half

12.4 - 13.1 mi

Top 75%
×2stories
+19ft-37ft

Overall

20018

Males

12312

M60-64

12312

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

19576

Males

12090

M60-64

12090

25K→30K

15.5 - 18.6 mi

Top 72%
×9stories
+181ft-148ft

Overall

19072

Males

11816

M60-64

11816

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

18734

Males

11563

M60-64

11563

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

17566

Males

11040

M60-64

11040

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

17493

Males

10931

M60-64

10931

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

17806

Males

11034

M60-64

11034

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

16834

Males

10556

M60-64

10556

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16473

Males

10342

M60-64

10342

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15266

Males

9807

M60-64

9807

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17329

Males

10760

M60-64

10760

Passing Analysis

Category:
Athletes Passed
1443
Passed By
1722
Net Change
-279
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18454
5K → 10K127689-562#18454#19016
10K → 15K137250-113#19016#19129
15K → 20K107248-141#19129#19270
20K → Half1636-20#19270#19290
Half → 25K105161-56#19290#19346
25K → 30K170146+24#19346#19322
30K → 20M10947+62#19322#19260
20M → 21M14327+116#19260#19144
21M → 35K6416+48#19144#19096
35K → 23M11940+79#19096#19017
23M → 24M11514+101#19017#18916
24M → 40K1119+102#18916#18814
40K → 25.2M533+50#18814#18764
25.2M → Finish6736+31#18764#18733
TOTALS14431722-279
📊

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