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BOSTON MARATHON 2023

Keith Burrows

Bib: 936•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 5%
Masters (Masters Men)
#0 / 9891
Top 1%
Division (M45-49)
#0 / 2252
Top 1%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:38
Rank: #687
Start → 5K
18:38 | 6:00/mi
10K· 6.21 mi
37:28
Rank: #798 (-111)
5K → 10K
18:50 | 6:04/mi
15K· 9.32 mi
56:18
Rank: #806 (-8)
10K → 15K
18:50 | 6:04/mi
20K· 12.43 mi
1:15:16
Rank: #789 (+17)
15K → 20K
18:58 | 6:06/mi
Half· 13.11 mi
1:19:23
Rank: #794 (-5)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:34:21
Rank: #791 (+3)
Half → 25K
14:58 | 6:10/mi
30K· 18.64 mi
1:54:08
Rank: #828 (-37)
25K → 30K
19:47 | 6:22/mi
20M
2:02:49
Rank: #835 (-7)
30K → 20M
8:41 | 6:23/mi
21M
2:09:28
Rank: #818 (+17)
20M → 21M
6:39 | 6:39/mi
35K· 21.75 mi
2:14:01
Rank: #821 (-3)
21M → 35K
4:33 | 6:05/mi
23M
2:22:05
Rank: #825 (-4)
35K → 23M
8:04 | 6:27/mi
24M
2:28:19
Rank: #823 (+2)
23M → 24M
6:14 | 6:14/mi
40K· 24.85 mi
2:33:55
Rank: #829 (-6)
24M → 40K
5:36 | 6:33/mi
25.2M
2:36:19
Rank: #830 (-1)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:42:55
Rank: #850 (-20)
25.2M → Finish
6:36 | 6:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:23
Pace6:03 /mi
2nd Half
Distance13.11 mi
Time1:23:32
Pace6:22 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5118:386:0018:38
6:00
-
10K
6.21 mi10:37:4137:286:0218:50
6:04
+0:04
15K
9.32 mi10:56:3156:186:0218:50
6:04
0:00
20K
12.43 mi11:15:291:15:166:0318:58
6:06
+0:02
Half
13.11 mi11:19:361:19:236:034:07
6:02
-0:04
25K
15.53 mi11:34:341:34:216:0414:58
6:10
+0:08
30K
18.64 mi11:54:211:54:086:0719:47
6:22
+0:12
20M
20.00 mi12:03:022:02:496:088:41
6:23
+0:01
21M
21.00 mi12:09:412:09:286:106:39
6:39
+0:16
35K
21.75 mi12:14:142:14:016:104:33
6:05
-0:34
23M
23.00 mi12:22:182:22:056:118:04
6:27
+0:22
24M
24.00 mi12:28:322:28:196:116:14
6:14
-0:13
40K
24.85 mi12:34:082:33:556:125:36
6:33
+0:19
25.2M
25.20 mi12:36:322:36:196:122:24
6:58
+0:25
Finish
26.22 mi12:43:082:42:556:136:36
6:29
-0:29

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

6:00 /mi

Average Pace

6:13 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:52

94% of race

Time at Steady Pace

9:03

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:13 /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 mi10:18:5118:386:0018:38
6:00
#687
10K
6.21 mi10:37:4137:286:0218:50
6:04
#798
15K
9.32 mi10:56:3156:186:0218:50
6:04
#806
20K
12.43 mi11:15:291:15:166:0318:58
6:06
#789
Half
13.11 mi11:19:361:19:236:034:07
6:02
#794
25K
15.53 mi11:34:341:34:216:0414:58
6:10
#791
30K
18.64 mi11:54:211:54:086:0719:47
6:22
#828
20M
20.00 mi12:03:022:02:496:088:41
6:23
#835
21M
21.00 mi12:09:412:09:286:106:39
6:39
#818
35K
21.75 mi12:14:142:14:016:104:33
6:05
#821
23M
23.00 mi12:22:182:22:056:118:04
6:27
#825
24M
24.00 mi12:28:322:28:196:116:14
6:14
#823
40K
24.85 mi12:34:082:33:556:125:36
6:33
#829
25.2M
25.20 mi12:36:322:36:196:122:24
6:58
#830
Finish
26.22 mi12:43:082:42:556:136:36
6:29
#850
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi687642642851(Top 3%)804(Top 5%)804(Top 36%)
10K6.21 mi3.10 mi798-111753-111753-111967(Top 4%)917(Top 6%)917(Top 41%)
15K9.32 mi3.11 mi806-8761-8761-8851(Top 3%)804(Top 5%)804(Top 36%)
20K12.43 mi3.11 mi789+17744+17744+17794(Top 3%)750(Top 5%)750(Top 33%)
Half13.11 mi0.68 mi794-5749-5749-5849(Top 3%)807(Top 5%)807(Top 36%)
25K15.53 mi2.42 mi791+3746+3746+3924(Top 3%)877(Top 6%)877(Top 39%)
30K18.64 mi3.11 mi828-37784-38784-381114(Top 4%)1061(Top 7%)1061(Top 47%)
20M20.00 mi1.36 mi835-7790-6790-61093(Top 4%)1047(Top 7%)1047(Top 46%)
21M21.00 mi1.00 mi818+17773+17773+17964(Top 4%)916(Top 6%)916(Top 41%)
35K21.75 mi0.75 mi821-3777-4777-4870(Top 3%)827(Top 5%)827(Top 37%)
23M23.00 mi1.25 mi825-4780-3780-31227(Top 5%)1158(Top 8%)1158(Top 51%)
24M24.00 mi1.00 mi823+2778+2778+21108(Top 4%)1049(Top 7%)1049(Top 47%)
40K24.85 mi0.85 mi829-6783-5783-51708(Top 6%)1606(Top 11%)1606(Top 71%)
25.2M25.20 mi0.35 mi830-1785-2785-21572(Top 6%)1478(Top 10%)1478(Top 66%)
Finish26.22 mi1.02 mi850-20804-19804-192344(Top 9%)2162(Top 14%)2162(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

851

Males

804

M45-49

804

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

967

Males

917

M45-49

917

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

851

Males

804

M45-49

804

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

794

Males

750

M45-49

750

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

849

Males

807

M45-49

807

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

924

Males

877

M45-49

877

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1114

Males

1061

M45-49

1061

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1093

Males

1047

M45-49

1047

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

964

Males

916

M45-49

916

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

870

Males

827

M45-49

827

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1227

Males

1158

M45-49

1158

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1108

Males

1049

M45-49

1049

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1708

Males

1606

M45-49

1606

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1572

Males

1478

M45-49

1478

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2344

Males

2162

M45-49

2162

Passing Analysis

Category:
Athletes Passed
194
Passed By
357
Net Change
-163
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#687
5K → 10K6117-111#687#798
10K → 15K1523-8#798#806
15K → 20K3215+17#806#789
20K → Half49-5#789#794
Half → 25K2926+3#794#791
25K → 30K1552-37#791#828
30K → 20M1219-7#828#835
20M → 21M214+17#835#818
21M → 35K69-3#818#821
35K → 23M1620-4#821#825
23M → 24M1210+2#825#823
24M → 40K1016-6#823#829
40K → 25.2M67-1#829#830
25.2M → Finish1030-20#830#850
TOTALS194357-163
📊

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