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BOSTON MARATHON 2023

Brian Robertson

Bib: 13111•M

DE

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 49%
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

Start
0:00:00
Race begins
5K· 3.11 mi
24:22
Rank: #12771
Start → 5K
24:22 | 7:51/mi
10K· 6.21 mi
48:46
Rank: #13167 (-396)
5K → 10K
24:24 | 7:51/mi
15K· 9.32 mi
1:13:18
Rank: #13265 (-98)
10K → 15K
24:32 | 7:54/mi
20K· 12.43 mi
1:38:01
Rank: #13201 (+64)
15K → 20K
24:43 | 7:57/mi
Half· 13.11 mi
1:43:24
Rank: #13206 (-5)
20K → Half
5:23 | 7:53/mi
25K· 15.53 mi
2:02:36
Rank: #12979 (+227)
Half → 25K
19:12 | 7:55/mi
30K· 18.64 mi
2:27:40
Rank: #12645 (+334)
25K → 30K
25:04 | 8:04/mi
20M
2:38:46
Rank: #12538 (+107)
30K → 20M
11:06 | 8:10/mi
21M
2:47:20
Rank: #12394 (+144)
20M → 21M
8:34 | 8:34/mi
35K· 21.75 mi
2:53:24
Rank: #12420 (-26)
21M → 35K
6:04 | 8:07/mi
23M
3:03:58
Rank: #12442 (-22)
35K → 23M
10:34 | 8:26/mi
24M
3:12:30
Rank: #12536 (-94)
23M → 24M
8:32 | 8:32/mi
40K· 24.85 mi
3:20:21
Rank: #12742 (-206)
24M → 40K
7:51 | 9:11/mi
25.2M
3:23:46
Rank: #12828 (-86)
40K → 25.2M
3:25 | 9:54/mi
Finish· 26.22 mi
3:32:44
Rank: #12981 (-153)
25.2M → Finish
8:58 | 8:48/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:24
Pace7:53 /mi
2nd Half
Distance13.11 mi
Time1:49:20
Pace8:20 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:0524:227:5124:22
7:51
-
10K
6.21 mi11:18:2948:467:5124:24
7:51
0:00
15K
9.32 mi11:43:011:13:187:5224:32
7:54
+0:03
20K
12.43 mi12:07:441:38:017:5324:43
7:57
+0:03
Half
13.11 mi12:13:071:43:247:535:23
7:53
-0:04
25K
15.53 mi12:32:192:02:367:5419:12
7:55
+0:02
30K
18.64 mi12:57:232:27:407:5525:04
8:04
+0:09
20M
20.00 mi13:08:292:38:467:5611:06
8:10
+0:06
21M
21.00 mi13:17:032:47:207:588:34
8:34
+0:24
35K
21.75 mi13:23:072:53:247:586:04
8:07
-0:27
23M
23.00 mi13:33:413:03:588:0010:34
8:26
+0:19
24M
24.00 mi13:42:133:12:308:018:32
8:32
+0:06
40K
24.85 mi13:50:043:20:218:047:51
9:11
+0:39
25.2M
25.20 mi13:53:293:23:468:053:25
9:54
+0:43
Finish
26.22 mi14:02:273:32:448:078:58
8:48
-1:06

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

7:51 /mi

Average Pace

8:07 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:44:50

77% of race

Time at Slower Pace

47:54

23% of race

Average Pace: 8:07 /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 mi10:54:0524:227:5124:22
7:51
#12771
10K
6.21 mi11:18:2948:467:5124:24
7:51
#13167
15K
9.32 mi11:43:011:13:187:5224:32
7:54
#13265
20K
12.43 mi12:07:441:38:017:5324:43
7:57
#13201
Half
13.11 mi12:13:071:43:247:535:23
7:53
#13206
25K
15.53 mi12:32:192:02:367:5419:12
7:55
#12979
30K
18.64 mi12:57:232:27:407:5525:04
8:04
#12645
20M
20.00 mi13:08:292:38:467:5611:06
8:10
#12538
21M
21.00 mi13:17:032:47:207:588:34
8:34
#12394
35K
21.75 mi13:23:072:53:247:586:04
8:07
#12420
23M
23.00 mi13:33:413:03:588:0010:34
8:26
#12442
24M
24.00 mi13:42:133:12:308:018:32
8:32
#12536
40K
24.85 mi13:50:043:20:218:047:51
9:11
#12742
25.2M
25.20 mi13:53:293:23:468:053:25
9:54
#12828
Finish
26.22 mi14:02:273:32:448:078:58
8:48
#12981
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi127719443944313487(Top 51%)9700(Top 64%)9700(Top 473%)
10K6.21 mi3.10 mi13167-3969601-1589601-15813579(Top 51%)9780(Top 64%)9780(Top 477%)
15K9.32 mi3.11 mi13265-989633-329633-3213487(Top 51%)9700(Top 64%)9700(Top 473%)
20K12.43 mi3.11 mi13201+649577+569577+5613058(Top 49%)9461(Top 62%)9461(Top 461%)
Half13.11 mi0.68 mi13206-59582-59582-513459(Top 51%)9664(Top 64%)9664(Top 471%)
25K15.53 mi2.42 mi12979+2279471+1119471+11112045(Top 45%)8930(Top 59%)8930(Top 435%)
30K18.64 mi3.11 mi12645+3349285+1869285+18611426(Top 43%)8553(Top 56%)8553(Top 417%)
20M20.00 mi1.36 mi12538+1079226+599226+5911462(Top 43%)8474(Top 56%)8474(Top 413%)
21M21.00 mi1.00 mi12394+1449150+769150+7610868(Top 41%)8065(Top 53%)8065(Top 393%)
35K21.75 mi0.75 mi12420-269135+159135+1512816(Top 48%)8903(Top 59%)8903(Top 434%)
23M23.00 mi1.25 mi12442-229132+39132+312832(Top 48%)8838(Top 58%)8838(Top 431%)
24M24.00 mi1.00 mi12536-949149-179149-1714645(Top 55%)9578(Top 63%)9578(Top 467%)
40K24.85 mi0.85 mi12742-2069206-579206-5716984(Top 64%)10567(Top 70%)10567(Top 515%)
25.2M25.20 mi0.35 mi12828-869239-339239-3316942(Top 64%)10519(Top 69%)10519(Top 513%)
Finish26.22 mi1.02 mi12981-1539274-359274-3517006(Top 64%)10602(Top 70%)10602(Top 517%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

13487

Males

9700

M50-54

9700

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13579

Males

9780

M50-54

9780

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

13487

Males

9700

M50-54

9700

15K→20K

9.3 - 12.4 mi

Top 49%
×5stories
+106ft-86ft

Overall

13058

Males

9461

M50-54

9461

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

13459

Males

9664

M50-54

9664

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12045

Males

8930

M50-54

8930

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11426

Males

8553

M50-54

8553

30K→20M

18.6 - 20.0 mi

Top 43%
×5stories
+64ft-50ft

Overall

11462

Males

8474

M50-54

8474

20M→21M

20.0 - 21.0 mi

Top 41%
×8stories
+106ft-24ft

Overall

10868

Males

8065

M50-54

8065

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12816

Males

8903

M50-54

8903

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

12832

Males

8838

M50-54

8838

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

14645

Males

9578

M50-54

9578

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16984

Males

10567

M50-54

10567

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

16942

Males

10519

M50-54

10519

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

17006

Males

10602

M50-54

10602

Passing Analysis

Category:
Athletes Passed
1747
Passed By
1957
Net Change
-210
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12771
5K → 10K153549-396#12771#13167
10K → 15K167265-98#13167#13265
15K → 20K213149+64#13265#13201
20K → Half3338-5#13201#13206
Half → 25K27144+227#13206#12979
25K → 30K36834+334#12979#12645
30K → 20M16457+107#12645#12538
20M → 21M16420+144#12538#12394
21M → 35K4571-26#12394#12420
35K → 23M7597-22#12420#12442
23M → 24M45139-94#12442#12536
24M → 40K18224-206#12536#12742
40K → 25.2M894-86#12742#12828
25.2M → Finish23176-153#12828#12981
TOTALS17471957-210
📊

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