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BOSTON MARATHON 2023

John Shanahan

Bib: 32053•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:02
Rank: #18894
Start → 5K
27:02 | 8:42/mi
10K· 6.21 mi
52:50
Rank: #17918 (+976)
5K → 10K
25:48 | 8:18/mi
15K· 9.32 mi
1:18:52
Rank: #17603 (+315)
10K → 15K
26:02 | 8:23/mi
20K· 12.43 mi
1:45:34
Rank: #17519 (+84)
15K → 20K
26:42 | 8:36/mi
Half· 13.11 mi
1:51:17
Rank: #17481 (+38)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:12:23
Rank: #17467 (+14)
Half → 25K
21:06 | 8:42/mi
30K· 18.64 mi
2:40:59
Rank: #17579 (-112)
25K → 30K
28:36 | 9:12/mi
20M
2:54:15
Rank: #17794 (-215)
30K → 20M
13:16 | 9:46/mi
21M
3:04:53
Rank: #17992 (-198)
20M → 21M
10:38 | 10:38/mi
35K· 21.75 mi
3:13:27
Rank: #18463 (-471)
21M → 35K
8:34 | 11:27/mi
23M
3:26:20
Rank: #18680 (-217)
35K → 23M
12:53 | 10:17/mi
24M
3:37:12
Rank: #19006 (-326)
23M → 24M
10:52 | 10:52/mi
40K· 24.85 mi
3:45:54
Rank: #19085 (-79)
24M → 40K
8:42 | 10:11/mi
25.2M
3:49:51
Rank: #19149 (-64)
40K → 25.2M
3:57 | 11:27/mi
Finish· 26.22 mi
3:59:00
Rank: #19138 (+11)
25.2M → Finish
9:09 | 8:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:17
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time2:07:43
Pace9:45 /mi
📊Positive Split: 14.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3527:028:4227:02
8:42
-
10K
6.21 mi12:12:2352:508:3025:48
8:18
-0:24
15K
9.32 mi12:38:251:18:528:2826:02
8:23
+0:05
20K
12.43 mi13:05:071:45:348:3026:42
8:36
+0:13
Half
13.11 mi13:10:501:51:178:295:43
8:23
-0:13
25K
15.53 mi13:31:562:12:238:3121:06
8:42
+0:19
30K
18.64 mi14:00:322:40:598:3828:36
9:12
+0:30
20M
20.00 mi14:13:482:54:158:4313:16
9:46
+0:34
21M
21.00 mi14:24:263:04:538:4810:38
10:38
+0:52
35K
21.75 mi14:33:003:13:278:548:34
11:27
+0:49
23M
23.00 mi14:45:533:26:208:5812:53
10:17
-1:10
24M
24.00 mi14:56:453:37:129:0310:52
10:52
+0:35
40K
24.85 mi15:05:273:45:549:058:42
10:11
-0:41
25.2M
25.20 mi15:09:243:49:519:073:57
11:27
+1:16
Finish
26.22 mi15:18:333:59:009:079:09
8:59
-2:28

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

8:18 /mi

Average Pace

9:07 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:15

35% of race

Time at Steady Pace

1:25:53

36% of race

Time at Slower Pace

1:08:52

29% of race

Average Pace: 9:07 /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 mi11:46:3527:028:4227:02
8:42
#18894
10K
6.21 mi12:12:2352:508:3025:48
8:18
#17918
15K
9.32 mi12:38:251:18:528:2826:02
8:23
#17603
20K
12.43 mi13:05:071:45:348:3026:42
8:36
#17519
Half
13.11 mi13:10:501:51:178:295:43
8:23
#17481
25K
15.53 mi13:31:562:12:238:3121:06
8:42
#17467
30K
18.64 mi14:00:322:40:598:3828:36
9:12
#17579
20M
20.00 mi14:13:482:54:158:4313:16
9:46
#17794
21M
21.00 mi14:24:263:04:538:4810:38
10:38
#17992
35K
21.75 mi14:33:003:13:278:548:34
11:27
#18463
23M
23.00 mi14:45:533:26:208:5812:53
10:17
#18680
24M
24.00 mi14:56:453:37:129:0310:52
10:52
#19006
40K
24.85 mi15:05:273:45:549:058:42
10:11
#19085
25.2M
25.20 mi15:09:243:49:519:073:57
11:27
#19149
Finish
26.22 mi15:18:333:59:009:079:09
8:59
#19138
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18894117381173817023(Top 64%)11074(Top 73%)11074(Top 210%)
10K6.21 mi3.10 mi17918+97611419+31911419+31916948(Top 64%)11090(Top 73%)11090(Top 210%)
15K9.32 mi3.11 mi17603+31511304+11511304+11517023(Top 64%)11074(Top 73%)11074(Top 210%)
20K12.43 mi3.11 mi17519+8411271+3311271+3317449(Top 66%)11235(Top 74%)11235(Top 213%)
Half13.11 mi0.68 mi17481+3811248+2311248+2316995(Top 64%)11093(Top 73%)11093(Top 210%)
25K15.53 mi2.42 mi17467+1411228+2011228+2017389(Top 65%)11151(Top 73%)11151(Top 211%)
30K18.64 mi3.11 mi17579-11211254-2611254-2618190(Top 68%)11412(Top 75%)11412(Top 216%)
20M20.00 mi1.36 mi17794-21511318-6411318-6419735(Top 74%)11992(Top 79%)11992(Top 227%)
21M21.00 mi1.00 mi17992-19811383-6511383-6519958(Top 75%)12029(Top 79%)12029(Top 228%)
35K21.75 mi0.75 mi18463-47111576-19311576-19324017(Top 90%)13855(Top 91%)13855(Top 262%)
23M23.00 mi1.25 mi18680-21711655-7911655-7920800(Top 78%)12368(Top 81%)12368(Top 234%)
24M24.00 mi1.00 mi19006-32611784-12911784-12922769(Top 86%)13237(Top 87%)13237(Top 250%)
40K24.85 mi0.85 mi19085-7911814-3011814-3020420(Top 77%)12108(Top 80%)12108(Top 229%)
25.2M25.20 mi0.35 mi19149-6411840-2611840-2621418(Top 80%)12567(Top 83%)12567(Top 238%)
Finish26.22 mi1.02 mi19138+1111832+811832+817861(Top 67%)11003(Top 73%)11003(Top 208%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

17023

Males

11074

M18-39

11074

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

16948

Males

11090

M18-39

11090

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

17023

Males

11074

M18-39

11074

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

17449

Males

11235

M18-39

11235

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

16995

Males

11093

M18-39

11093

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

17389

Males

11151

M18-39

11151

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

18190

Males

11412

M18-39

11412

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

19735

Males

11992

M18-39

11992

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

19958

Males

12029

M18-39

12029

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

24017

Males

13855

M18-39

13855

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

20800

Males

12368

M18-39

12368

23M→24M

23.0 - 24.0 mi

Top 86%
×6stories
+12ft-82ft

Overall

22769

Males

13237

M18-39

13237

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20420

Males

12108

M18-39

12108

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21418

Males

12567

M18-39

12567

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2stories
+22ft-21ft

Overall

17861

Males

11003

M18-39

11003

Passing Analysis

Category:
Athletes Passed
2220
Passed By
2464
Net Change
-244
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18894
5K → 10K1078102+976#18894#17918
10K → 15K38772+315#17918#17603
15K → 20K215131+84#17603#17519
20K → Half5820+38#17519#17481
Half → 25K135121+14#17481#17467
25K → 30K140252-112#17467#17579
30K → 20M35250-215#17579#17794
20M → 21M37235-198#17794#17992
21M → 35K4475-471#17992#18463
35K → 23M32249-217#18463#18680
23M → 24M10336-326#18680#19006
24M → 40K26105-79#19006#19085
40K → 25.2M1276-64#19085#19149
25.2M → Finish5140+11#19149#19138
TOTALS22202464-244
📊

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