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BOSTON MARATHON 2023

Gerald Cahill

Bib: 29437•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
26:54
Rank: #18615
Start → 5K
26:54 | 8:39/mi
10K· 6.21 mi
52:33
Rank: #17605 (+1010)
5K → 10K
25:39 | 8:15/mi
15K· 9.32 mi
1:18:35
Rank: #17396 (+209)
10K → 15K
26:02 | 8:23/mi
20K· 12.43 mi
1:44:46
Rank: #17147 (+249)
15K → 20K
26:11 | 8:26/mi
Half· 13.11 mi
1:50:29
Rank: #17137 (+10)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:11:17
Rank: #17046 (+91)
Half → 25K
20:48 | 8:35/mi
30K· 18.64 mi
2:38:48
Rank: #16883 (+163)
25K → 30K
27:31 | 8:51/mi
20M
2:51:04
Rank: #16862 (+21)
30K → 20M
12:16 | 9:02/mi
21M
3:00:28
Rank: #16760 (+102)
20M → 21M
9:24 | 9:24/mi
35K· 21.75 mi
3:07:02
Rank: #16741 (+19)
21M → 35K
6:34 | 8:47/mi
23M
3:18:29
Rank: #16762 (-21)
35K → 23M
11:27 | 9:09/mi
24M
3:27:20
Rank: #16738 (+24)
23M → 24M
8:51 | 8:51/mi
40K· 24.85 mi
3:35:06
Rank: #16730 (+8)
24M → 40K
7:46 | 9:05/mi
25.2M
3:38:24
Rank: #16697 (+33)
40K → 25.2M
3:18 | 9:34/mi
Finish· 26.22 mi
3:47:12
Rank: #16673 (+24)
25.2M → Finish
8:48 | 8:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:29
Pace8:26 /mi
2nd Half
Distance13.11 mi
Time1:56:43
Pace8:54 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5326:548:3926:54
8:39
-
10K
6.21 mi12:10:3252:338:2725:39
8:15
-0:24
15K
9.32 mi12:36:341:18:358:2626:02
8:23
+0:08
20K
12.43 mi13:02:451:44:468:2626:11
8:26
+0:03
Half
13.11 mi13:08:281:50:298:265:43
8:23
-0:03
25K
15.53 mi13:29:162:11:178:2720:48
8:35
+0:12
30K
18.64 mi13:56:472:38:488:3127:31
8:51
+0:16
20M
20.00 mi14:09:032:51:048:3312:16
9:02
+0:11
21M
21.00 mi14:18:273:00:288:369:24
9:24
+0:22
35K
21.75 mi14:25:013:07:028:366:34
8:47
-0:37
23M
23.00 mi14:36:283:18:298:3811:27
9:09
+0:22
24M
24.00 mi14:45:193:27:208:388:51
8:51
-0:18
40K
24.85 mi14:53:053:35:068:397:46
9:05
+0:14
25.2M
25.20 mi14:56:233:38:248:403:18
9:34
+0:29
Finish
26.22 mi15:05:113:47:128:408:48
8:38
-0:56

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

8:15 /mi

Average Pace

8:40 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:17

86% of race

Time at Steady Pace

31:55

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:40 /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 mi11:44:5326:548:3926:54
8:39
#18615
10K
6.21 mi12:10:3252:338:2725:39
8:15
#17605
15K
9.32 mi12:36:341:18:358:2626:02
8:23
#17396
20K
12.43 mi13:02:451:44:468:2626:11
8:26
#17147
Half
13.11 mi13:08:281:50:298:265:43
8:23
#17137
25K
15.53 mi13:29:162:11:178:2720:48
8:35
#17046
30K
18.64 mi13:56:472:38:488:3127:31
8:51
#16883
20M
20.00 mi14:09:032:51:048:3312:16
9:02
#16862
21M
21.00 mi14:18:273:00:288:369:24
9:24
#16760
35K
21.75 mi14:25:013:07:028:366:34
8:47
#16741
23M
23.00 mi14:36:283:18:298:3811:27
9:09
#16762
24M
24.00 mi14:45:193:27:208:388:51
8:51
#16738
40K
24.85 mi14:53:053:35:068:397:46
9:05
#16730
25.2M
25.20 mi14:56:233:38:248:403:18
9:34
#16697
Finish
26.22 mi15:05:113:47:128:408:48
8:38
#16673
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18615116481164817016(Top 64%)11068(Top 73%)11068(Top 209%)
10K6.21 mi3.10 mi17605+101011293+35511293+35516615(Top 62%)10948(Top 72%)10948(Top 207%)
15K9.32 mi3.11 mi17396+20911221+7211221+7217016(Top 64%)11068(Top 73%)11068(Top 209%)
20K12.43 mi3.11 mi17147+24911110+11111110+11116406(Top 62%)10795(Top 71%)10795(Top 204%)
Half13.11 mi0.68 mi17137+1011109+111109+116968(Top 64%)11066(Top 73%)11066(Top 209%)
25K15.53 mi2.42 mi17046+9111053+5611053+5616673(Top 63%)10835(Top 71%)10835(Top 205%)
30K18.64 mi3.11 mi16883+16310974+7910974+7916413(Top 62%)10657(Top 70%)10657(Top 202%)
20M20.00 mi1.36 mi16862+2110950+2410950+2416669(Top 63%)10694(Top 70%)10694(Top 202%)
21M21.00 mi1.00 mi16760+10210895+5510895+5515460(Top 58%)10119(Top 67%)10119(Top 191%)
35K21.75 mi0.75 mi16741+1910877+1810877+1816807(Top 63%)10615(Top 70%)10615(Top 201%)
23M23.00 mi1.25 mi16762-2110863+1410863+1416745(Top 63%)10566(Top 70%)10566(Top 200%)
24M24.00 mi1.00 mi16738+2410832+3110832+3116472(Top 62%)10387(Top 68%)10387(Top 197%)
40K24.85 mi0.85 mi16730+810813+1910813+1916551(Top 62%)10376(Top 68%)10376(Top 196%)
25.2M25.20 mi0.35 mi16697+3310788+2510788+2515465(Top 58%)9886(Top 65%)9886(Top 187%)
Finish26.22 mi1.02 mi16673+2410769+1910769+1916151(Top 61%)10233(Top 67%)10233(Top 194%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

17016

Males

11068

M18-39

11068

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

16615

Males

10948

M18-39

10948

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

17016

Males

11068

M18-39

11068

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16406

Males

10795

M18-39

10795

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

16968

Males

11066

M18-39

11066

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

16673

Males

10835

M18-39

10835

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16413

Males

10657

M18-39

10657

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16669

Males

10694

M18-39

10694

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15460

Males

10119

M18-39

10119

21M→35K

21.0 - 21.8 mi

Top 63%
×7stories
+17ft-86ft

Overall

16807

Males

10615

M18-39

10615

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

16745

Males

10566

M18-39

10566

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

16472

Males

10387

M18-39

10387

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16551

Males

10376

M18-39

10376

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15465

Males

9886

M18-39

9886

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

16151

Males

10233

M18-39

10233

Passing Analysis

Category:
Athletes Passed
2770
Passed By
828
Net Change
+1942
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18615
5K → 10K109686+1010#18615#17605
10K → 15K321112+209#17605#17396
15K → 20K30859+249#17396#17147
20K → Half2818+10#17147#17137
Half → 25K16877+91#17137#17046
25K → 30K24885+163#17046#16883
30K → 20M8867+21#16883#16862
20M → 21M13129+102#16862#16760
21M → 35K5334+19#16760#16741
35K → 23M79100-21#16741#16762
23M → 24M7753+24#16762#16738
24M → 40K5951+8#16738#16730
40K → 25.2M396+33#16730#16697
25.2M → Finish7551+24#16697#16673
TOTALS2770828+1942
📊

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