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BOSTON MARATHON 2023

Erle Kirby

Bib: 27185•M

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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
24:44
Rank: #13725
Start → 5K
24:44 | 7:58/mi
10K· 6.21 mi
46:12
Rank: #9457 (+4268)
5K → 10K
21:28 | 6:55/mi
15K· 9.32 mi
1:09:09
Rank: #9349 (+108)
10K → 15K
22:57 | 7:23/mi
20K· 12.43 mi
1:32:44
Rank: #9506 (-157)
15K → 20K
23:35 | 7:35/mi
Half· 13.11 mi
1:37:55
Rank: #9582 (-76)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:57:51
Rank: #10364 (-782)
Half → 25K
19:56 | 8:13/mi
30K· 18.64 mi
2:26:09
Rank: #11945 (-1581)
25K → 30K
28:18 | 9:07/mi
20M
2:39:44
Rank: #12934 (-989)
30K → 20M
13:35 | 10:00/mi
21M
2:50:02
Rank: #13427 (-493)
20M → 21M
10:18 | 10:18/mi
35K· 21.75 mi
2:57:17
Rank: #13820 (-393)
21M → 35K
7:15 | 9:41/mi
23M
3:09:33
Rank: #14263 (-443)
35K → 23M
12:16 | 9:48/mi
24M
3:20:24
Rank: #14901 (-638)
23M → 24M
10:51 | 10:51/mi
40K· 24.85 mi
3:29:14
Rank: #15237 (-336)
24M → 40K
8:50 | 10:20/mi
25.2M
3:33:24
Rank: #15469 (-232)
40K → 25.2M
4:10 | 12:05/mi
Finish· 26.22 mi
3:42:54
Rank: #15663 (-194)
25.2M → Finish
9:30 | 9:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:55
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time2:04:59
Pace9:32 /mi
📊Positive Split: 27.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:3724:447:5824:44
7:58
-
10K
6.21 mi12:03:0546:127:2621:28
6:55
-1:03
15K
9.32 mi12:26:021:09:097:2522:57
7:23
+0:28
20K
12.43 mi12:49:371:32:447:2823:35
7:35
+0:12
Half
13.11 mi12:54:481:37:557:285:11
7:36
+0:01
25K
15.53 mi13:14:441:57:517:3519:56
8:13
+0:37
30K
18.64 mi13:43:022:26:097:5028:18
9:07
+0:54
20M
20.00 mi13:56:372:39:447:5913:35
10:00
+0:53
21M
21.00 mi14:06:552:50:028:0610:18
10:18
+0:18
35K
21.75 mi14:14:102:57:178:097:15
9:41
-0:37
23M
23.00 mi14:26:263:09:338:1412:16
9:48
+0:07
24M
24.00 mi14:37:173:20:248:2110:51
10:51
+1:03
40K
24.85 mi14:46:073:29:148:258:50
10:20
-0:31
25.2M
25.20 mi14:50:173:33:248:284:10
12:05
+1:45
Finish
26.22 mi14:59:473:42:548:309:30
9:19
-2:46

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

6:55 /mi

Average Pace

8:30 /mi

Slowest Pace

12:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:51

53% of race

Time at Steady Pace

1:10:54

32% of race

Time at Slower Pace

34:09

15% of race

Average Pace: 8:30 /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 mi11:41:3724:447:5824:44
7:58
#13725
10K
6.21 mi12:03:0546:127:2621:28
6:55
#9457
15K
9.32 mi12:26:021:09:097:2522:57
7:23
#9349
20K
12.43 mi12:49:371:32:447:2823:35
7:35
#9506
Half
13.11 mi12:54:481:37:557:285:11
7:36
#9582
25K
15.53 mi13:14:441:57:517:3519:56
8:13
#10364
30K
18.64 mi13:43:022:26:097:5028:18
9:07
#11945
20M
20.00 mi13:56:372:39:447:5913:35
10:00
#12934
21M
21.00 mi14:06:552:50:028:0610:18
10:18
#13427
35K
21.75 mi14:14:102:57:178:097:15
9:41
#13820
23M
23.00 mi14:26:263:09:338:1412:16
9:48
#14263
24M
24.00 mi14:37:173:20:248:2110:51
10:51
#14901
40K
24.85 mi14:46:073:29:148:258:50
10:20
#15237
25.2M
25.20 mi14:50:173:33:248:284:10
12:05
#15469
Finish
26.22 mi14:59:473:42:548:309:30
9:19
#15663
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi13725985198519230(Top 35%)7691(Top 51%)7691(Top 146%)
10K6.21 mi3.10 mi9457+42687856+19957856+19956218(Top 23%)5640(Top 37%)5640(Top 107%)
15K9.32 mi3.11 mi9349+1087779+777779+779230(Top 35%)7691(Top 51%)7691(Top 146%)
20K12.43 mi3.11 mi9506-1577865-867865-8610020(Top 38%)8088(Top 53%)8088(Top 153%)
Half13.11 mi0.68 mi9582-767913-487913-4810997(Top 41%)8636(Top 57%)8636(Top 163%)
25K15.53 mi2.42 mi10364-7828325-4128325-41214386(Top 54%)9928(Top 65%)9928(Top 188%)
30K18.64 mi3.11 mi11945-15818980-6558980-65517719(Top 67%)11220(Top 74%)11220(Top 212%)
20M20.00 mi1.36 mi12934-9899386-4069386-40620459(Top 77%)12325(Top 81%)12325(Top 233%)
21M21.00 mi1.00 mi13427-4939578-1929578-19219018(Top 71%)11645(Top 77%)11645(Top 220%)
35K21.75 mi0.75 mi13820-3939720-1429720-14220419(Top 77%)12210(Top 80%)12210(Top 231%)
23M23.00 mi1.25 mi14263-4439856-1369856-13619411(Top 73%)11751(Top 77%)11751(Top 222%)
24M24.00 mi1.00 mi14901-63810089-23310089-23322746(Top 85%)13223(Top 87%)13223(Top 250%)
40K24.85 mi0.85 mi15237-33610203-11410203-11420800(Top 78%)12283(Top 81%)12283(Top 232%)
25.2M25.20 mi0.35 mi15469-23210274-7110274-7122610(Top 85%)13123(Top 86%)13123(Top 248%)
Finish26.22 mi1.02 mi15663-19410355-8110355-8119444(Top 73%)11719(Top 77%)11719(Top 222%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9230

Males

7691

M18-39

7691

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6218

Males

5640

M18-39

5640

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9230

Males

7691

M18-39

7691

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10020

Males

8088

M18-39

8088

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

10997

Males

8636

M18-39

8636

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

14386

Males

9928

M18-39

9928

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

17719

Males

11220

M18-39

11220

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

20459

Males

12325

M18-39

12325

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

19018

Males

11645

M18-39

11645

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

20419

Males

12210

M18-39

12210

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

19411

Males

11751

M18-39

11751

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22746

Males

13223

M18-39

13223

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20800

Males

12283

M18-39

12283

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22610

Males

13123

M18-39

13123

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19444

Males

11719

M18-39

11719

Passing Analysis

Category:
Athletes Passed
4694*
Passed By
6630
Net Change
-1938
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13725
5K → 10K4268*0+4268#13725#9457
10K → 15K208100+108#9457#9349
15K → 20K86243-157#9349#9506
20K → Half682-76#9506#9582
Half → 25K23803-782#9582#10364
25K → 30K121593-1581#10364#11945
30K → 20M7996-989#11945#12934
20M → 21M12505-493#12934#13427
21M → 35K8401-393#13427#13820
35K → 23M14457-443#13820#14263
23M → 24M7645-638#14263#14901
24M → 40K15351-336#14901#15237
40K → 25.2M8240-232#15237#15469
25.2M → Finish20214-194#15469#15663
TOTALS4694*6630-1938

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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