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BOSTON MARATHON 2023

James Crosby

Bib: 3896•M

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:19
Rank: #5218
Start → 5K
21:19 | 6:52/mi
10K· 6.21 mi
42:24
Rank: #5143 (+75)
5K → 10K
21:05 | 6:47/mi
15K· 9.32 mi
1:03:26
Rank: #5043 (+100)
10K → 15K
21:02 | 6:46/mi
20K· 12.43 mi
1:24:27
Rank: #4794 (+249)
15K → 20K
21:01 | 6:46/mi
Half· 13.11 mi
1:29:02
Rank: #4771 (+23)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:45:16
Rank: #4466 (+305)
Half → 25K
16:14 | 6:42/mi
30K· 18.64 mi
2:06:35
Rank: #4223 (+243)
25K → 30K
21:19 | 6:52/mi
20M
2:15:55
Rank: #4110 (+113)
30K → 20M
9:20 | 6:52/mi
21M
2:22:59
Rank: #3949 (+161)
20M → 21M
7:04 | 7:04/mi
35K· 21.75 mi
2:27:49
Rank: #3847 (+102)
21M → 35K
4:50 | 6:28/mi
23M
2:36:31
Rank: #3790 (+57)
35K → 23M
8:42 | 6:57/mi
24M
2:43:24
Rank: #3804 (-14)
23M → 24M
6:53 | 6:53/mi
40K· 24.85 mi
2:49:29
Rank: #3833 (-29)
24M → 40K
6:05 | 7:07/mi
25.2M
2:52:03
Rank: #3818 (+15)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
2:58:23
Rank: #3612 (+206)
25.2M → Finish
6:20 | 6:13/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:02
Pace6:47 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:21
Pace6:49 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2921:196:5221:19
6:52
-
10K
6.21 mi10:43:3442:246:4921:05
6:47
-0:05
15K
9.32 mi11:04:361:03:266:4821:02
6:46
-0:01
20K
12.43 mi11:25:371:24:276:4821:01
6:46
0:00
Half
13.11 mi11:30:121:29:026:474:35
6:43
-0:03
25K
15.53 mi11:46:261:45:166:4716:14
6:42
-0:01
30K
18.64 mi12:07:452:06:356:4721:19
6:52
+0:10
20M
20.00 mi12:17:052:15:556:489:20
6:52
0:00
21M
21.00 mi12:24:092:22:596:497:04
7:04
+0:12
35K
21.75 mi12:28:592:27:496:484:50
6:28
-0:36
23M
23.00 mi12:37:412:36:316:488:42
6:57
+0:29
24M
24.00 mi12:44:342:43:246:496:53
6:53
-0:04
40K
24.85 mi12:50:392:49:296:496:05
7:07
+0:14
25.2M
25.20 mi12:53:132:52:036:502:34
7:27
+0:20
Finish
26.22 mi12:59:332:58:236:496:20
6:13
-1:14

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

6:13 /mi

Average Pace

6:49 /mi

Slowest Pace

7:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:07

53% of race

Time at Steady Pace

1:20:42

45% of race

Time at Slower Pace

2:34

1% of race

Average Pace: 6:48 /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 mi10:22:2921:196:5221:19
6:52
#5218
10K
6.21 mi10:43:3442:246:4921:05
6:47
#5143
15K
9.32 mi11:04:361:03:266:4821:02
6:46
#5043
20K
12.43 mi11:25:371:24:276:4821:01
6:46
#4794
Half
13.11 mi11:30:121:29:026:474:35
6:43
#4771
25K
15.53 mi11:46:261:45:166:4716:14
6:42
#4466
30K
18.64 mi12:07:452:06:356:4721:19
6:52
#4223
20M
20.00 mi12:17:052:15:556:489:20
6:52
#4110
21M
21.00 mi12:24:092:22:596:497:04
7:04
#3949
35K
21.75 mi12:28:592:27:496:484:50
6:28
#3847
23M
23.00 mi12:37:412:36:316:488:42
6:57
#3790
24M
24.00 mi12:44:342:43:246:496:53
6:53
#3804
40K
24.85 mi12:50:392:49:296:496:05
7:07
#3833
25.2M
25.20 mi12:53:132:52:036:502:34
7:27
#3818
Finish
26.22 mi12:59:332:58:236:496:20
6:13
#3612
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5218483248324797(Top 18%)4468(Top 29%)4468(Top 85%)
10K6.21 mi3.10 mi5143+754763+694763+695128(Top 19%)4742(Top 31%)4742(Top 90%)
15K9.32 mi3.11 mi5043+1004680+834680+834797(Top 18%)4468(Top 29%)4468(Top 85%)
20K12.43 mi3.11 mi4794+2494467+2134467+2134116(Top 15%)3860(Top 25%)3860(Top 73%)
Half13.11 mi0.68 mi4771+234445+224445+224445(Top 17%)4137(Top 27%)4137(Top 78%)
25K15.53 mi2.42 mi4466+3054178+2674178+2673329(Top 13%)3161(Top 21%)3161(Top 60%)
30K18.64 mi3.11 mi4223+2433964+2143964+2143386(Top 13%)3186(Top 21%)3186(Top 60%)
20M20.00 mi1.36 mi4110+1133860+1043860+1043227(Top 12%)3024(Top 20%)3024(Top 57%)
21M21.00 mi1.00 mi3949+1613716+1443716+1442486(Top 9%)2349(Top 15%)2349(Top 44%)
35K21.75 mi0.75 mi3847+1023619+973619+972263(Top 9%)2150(Top 14%)2150(Top 41%)
23M23.00 mi1.25 mi3790+573569+503569+503512(Top 13%)3253(Top 21%)3253(Top 62%)
24M24.00 mi1.00 mi3804-143574-53574-54084(Top 15%)3715(Top 24%)3715(Top 70%)
40K24.85 mi0.85 mi3833-293602-283602-284424(Top 17%)3925(Top 26%)3925(Top 74%)
25.2M25.20 mi0.35 mi3818+153587+153587+153601(Top 14%)3229(Top 21%)3229(Top 61%)
Finish26.22 mi1.02 mi3612+2063398+1893398+1891343(Top 5%)1273(Top 8%)1273(Top 24%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4797

Males

4468

M18-39

4468

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5128

Males

4742

M18-39

4742

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4797

Males

4468

M18-39

4468

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4116

Males

3860

M18-39

3860

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4445

Males

4137

M18-39

4137

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3329

Males

3161

M18-39

3161

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3386

Males

3186

M18-39

3186

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3227

Males

3024

M18-39

3024

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2486

Males

2349

M18-39

2349

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2263

Males

2150

M18-39

2150

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3512

Males

3253

M18-39

3253

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4084

Males

3715

M18-39

3715

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4424

Males

3925

M18-39

3925

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3601

Males

3229

M18-39

3229

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1343

Males

1273

M18-39

1273

Passing Analysis

Category:
Athletes Passed
2092
Passed By
486
Net Change
+1606
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5218
5K → 10K224149+75#5218#5143
10K → 15K17373+100#5143#5043
15K → 20K26516+249#5043#4794
20K → Half4320+23#4794#4771
Half → 25K3105+305#4771#4466
25K → 30K26017+243#4466#4223
30K → 20M12714+113#4223#4110
20M → 21M1665+161#4110#3949
21M → 35K1075+102#3949#3847
35K → 23M8730+57#3847#3790
23M → 24M4357-14#3790#3804
24M → 40K4978-29#3804#3833
40K → 25.2M3116+15#3833#3818
25.2M → Finish2071+206#3818#3612
TOTALS2092486+1606
📊

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