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BOSTON MARATHON 2023

Dan Brounstein

Bib: 8975•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
Masters (Masters Men)
#0 / 9891
Top 15%
Division (M45-49)
#0 / 2252
Top 18%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:37
Rank: #3140
Start → 5K
20:37 | 6:38/mi
10K· 6.21 mi
41:31
Rank: #3784 (-644)
5K → 10K
20:54 | 6:44/mi
15K· 9.32 mi
1:02:30
Rank: #4069 (-285)
10K → 15K
20:59 | 6:45/mi
20K· 12.43 mi
1:23:34
Rank: #4118 (-49)
15K → 20K
21:04 | 6:47/mi
Half· 13.11 mi
1:28:07
Rank: #4104 (+14)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:44:52
Rank: #4225 (-121)
Half → 25K
16:45 | 6:55/mi
30K· 18.64 mi
2:06:52
Rank: #4357 (-132)
25K → 30K
22:00 | 7:05/mi
20M
2:16:36
Rank: #4422 (-65)
30K → 20M
9:44 | 7:10/mi
21M
2:24:15
Rank: #4488 (-66)
20M → 21M
7:39 | 7:39/mi
35K· 21.75 mi
2:29:30
Rank: #4533 (-45)
21M → 35K
5:15 | 7:01/mi
23M
2:38:43
Rank: #4595 (-62)
35K → 23M
9:13 | 7:22/mi
24M
2:45:47
Rank: #4602 (-7)
23M → 24M
7:04 | 7:04/mi
40K· 24.85 mi
2:52:03
Rank: #4615 (-13)
24M → 40K
6:16 | 7:20/mi
25.2M
2:54:48
Rank: #4629 (-14)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:02:25
Rank: #4702 (-73)
25.2M → Finish
7:37 | 7:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:07
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:34:18
Pace7:12 /mi
📊Positive Split: 7.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:4620:376:3820:37
6:38
-
10K
6.21 mi11:06:4041:316:4120:54
6:44
+0:06
15K
9.32 mi11:27:391:02:306:4220:59
6:45
+0:01
20K
12.43 mi11:48:431:23:346:4321:04
6:47
+0:02
Half
13.11 mi11:53:161:28:076:434:33
6:40
-0:07
25K
15.53 mi12:10:011:44:526:4516:45
6:55
+0:15
30K
18.64 mi12:32:012:06:526:4822:00
7:05
+0:10
20M
20.00 mi12:41:452:16:366:509:44
7:10
+0:05
21M
21.00 mi12:49:242:24:156:527:39
7:39
+0:29
35K
21.75 mi12:54:392:29:306:525:15
7:01
-0:38
23M
23.00 mi13:03:522:38:436:549:13
7:22
+0:21
24M
24.00 mi13:10:562:45:476:547:04
7:04
-0:18
40K
24.85 mi13:17:122:52:036:556:16
7:20
+0:16
25.2M
25.20 mi13:19:572:54:486:562:45
7:58
+0:38
Finish
26.22 mi13:27:343:02:256:587:37
7:28
-0:30

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

6:38 /mi

Average Pace

6:58 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:07

48% of race

Time at Steady Pace

1:00:48

33% of race

Time at Slower Pace

33:30

18% of race

Average Pace: 6:57 /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 mi10:45:4620:376:3820:37
6:38
#3140
10K
6.21 mi11:06:4041:316:4120:54
6:44
#3784
15K
9.32 mi11:27:391:02:306:4220:59
6:45
#4069
20K
12.43 mi11:48:431:23:346:4321:04
6:47
#4118
Half
13.11 mi11:53:161:28:076:434:33
6:40
#4104
25K
15.53 mi12:10:011:44:526:4516:45
6:55
#4225
30K
18.64 mi12:32:012:06:526:4822:00
7:05
#4357
20M
20.00 mi12:41:452:16:366:509:44
7:10
#4422
21M
21.00 mi12:49:242:24:156:527:39
7:39
#4488
35K
21.75 mi12:54:392:29:306:525:15
7:01
#4533
23M
23.00 mi13:03:522:38:436:549:13
7:22
#4595
24M
24.00 mi13:10:562:45:476:547:04
7:04
#4602
40K
24.85 mi13:17:122:52:036:556:16
7:20
#4615
25.2M
25.20 mi13:19:572:54:486:562:45
7:58
#4629
Finish
26.22 mi13:27:343:02:256:587:37
7:28
#4702
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3140296829684652(Top 17%)4345(Top 29%)4345(Top 193%)
10K6.21 mi3.10 mi3784-6443564-5963564-5964610(Top 17%)4298(Top 28%)4298(Top 191%)
15K9.32 mi3.11 mi4069-2853825-2613825-2614652(Top 17%)4345(Top 29%)4345(Top 193%)
20K12.43 mi3.11 mi4118-493865-403865-404263(Top 16%)3991(Top 26%)3991(Top 177%)
Half13.11 mi0.68 mi4104+143849+163849+164078(Top 15%)3830(Top 25%)3830(Top 170%)
25K15.53 mi2.42 mi4225-1213962-1133962-1135005(Top 19%)4630(Top 31%)4630(Top 206%)
30K18.64 mi3.11 mi4357-1324075-1134075-1134819(Top 18%)4441(Top 29%)4441(Top 197%)
20M20.00 mi1.36 mi4422-654130-554130-554913(Top 18%)4468(Top 29%)4468(Top 198%)
21M21.00 mi1.00 mi4488-664189-594189-595336(Top 20%)4708(Top 31%)4708(Top 209%)
35K21.75 mi0.75 mi4533-454227-384227-385402(Top 20%)4798(Top 32%)4798(Top 213%)
23M23.00 mi1.25 mi4595-624276-494276-495607(Top 21%)4909(Top 32%)4909(Top 218%)
24M24.00 mi1.00 mi4602-74285-94285-94997(Top 19%)4415(Top 29%)4415(Top 196%)
40K24.85 mi0.85 mi4615-134290-54290-55609(Top 21%)4756(Top 31%)4756(Top 211%)
25.2M25.20 mi0.35 mi4629-144301-114301-116252(Top 23%)5088(Top 34%)5088(Top 226%)
Finish26.22 mi1.02 mi4702-734346-454346-458310(Top 31%)6326(Top 42%)6326(Top 281%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4652

Males

4345

M45-49

4345

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4610

Males

4298

M45-49

4298

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4652

Males

4345

M45-49

4345

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4263

Males

3991

M45-49

3991

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4078

Males

3830

M45-49

3830

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5005

Males

4630

M45-49

4630

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4819

Males

4441

M45-49

4441

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4913

Males

4468

M45-49

4468

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5336

Males

4708

M45-49

4708

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5402

Males

4798

M45-49

4798

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5607

Males

4909

M45-49

4909

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

4997

Males

4415

M45-49

4415

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5609

Males

4756

M45-49

4756

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6252

Males

5088

M45-49

5088

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8310

Males

6326

M45-49

6326

Passing Analysis

Category:
Athletes Passed
612
Passed By
2174
Net Change
-1562
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3140
5K → 10K36680-644#3140#3784
10K → 15K39324-285#3784#4069
15K → 20K89138-49#4069#4118
20K → Half3117+14#4118#4104
Half → 25K44165-121#4104#4225
25K → 30K77209-132#4225#4357
30K → 20M44109-65#4357#4422
20M → 21M41107-66#4422#4488
21M → 35K3277-45#4488#4533
35K → 23M49111-62#4533#4595
23M → 24M4552-7#4595#4602
24M → 40K4558-13#4602#4615
40K → 25.2M1226-14#4615#4629
25.2M → Finish28101-73#4629#4702
TOTALS6122174-1562
📊

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