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BOSTON MARATHON 2023

Jeffrey Ernst

Bib: 21464•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:13
Rank: #19231
Start → 5K
8:46/mi
27:13 split
10K· 6.21 mi
54:29
Rank: #19495 (-264)
5K → 10K
8:47/mi
27:16 split
15K· 9.32 mi
1:21:55
Rank: #19546 (-51)
10K → 15K
8:50/mi
27:26 split
20K· 12.43 mi
1:50:16
Rank: #19716 (-170)
15K → 20K
9:07/mi
28:21 split
Half· 13.11 mi
1:56:17
Rank: #19713 (+3)
20K → Half
8:49/mi
6:01 split
25K· 15.53 mi
2:18:38
Rank: #19744 (-31)
Half → 25K
9:13/mi
22:21 split
30K· 18.64 mi
2:48:24
Rank: #19747 (-3)
25K → 30K
9:35/mi
29:46 split
20M
3:01:23
Rank: #19685 (+62)
30K → 20M
9:33/mi
12:59 split
21M
3:11:37
Rank: #19614 (+71)
20M → 21M
10:14/mi
10:14 split
35K· 21.75 mi
3:18:35
Rank: #19606 (+8)
21M → 35K
9:19/mi
6:58 split
23M
3:30:44
Rank: #19569 (+37)
35K → 23M
9:42/mi
12:09 split
24M
3:40:12
Rank: #19567 (+2)
23M → 24M
9:28/mi
9:28 split
40K· 24.85 mi
3:48:39
Rank: #19571 (-4)
24M → 40K
9:53/mi
8:27 split
25.2M
3:52:13
Rank: #19561 (+10)
40K → 25.2M
10:21/mi
3:34 split
Finish· 26.22 mi
4:02:03
Rank: #19618 (-57)
25.2M → Finish
9:39/mi
9:50 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:17
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:05:46
Pace9:36 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:5527:138:4627:13
8:46
-
10K
6.21 mi11:47:1154:298:4627:16
8:47
+0:01
15K
9.32 mi12:14:371:21:558:4727:26
8:50
+0:03
20K
12.43 mi12:42:581:50:168:5228:21
9:07
+0:17
Half
13.11 mi12:48:591:56:178:526:01
8:49
-0:18
25K
15.53 mi13:11:202:18:388:5522:21
9:13
+0:24
30K
18.64 mi13:41:062:48:249:0229:46
9:35
+0:22
20M
20.00 mi13:54:053:01:239:0412:59
9:33
-0:02
21M
21.00 mi14:04:193:11:379:0710:14
10:14
+0:41
35K
21.75 mi14:11:173:18:359:086:58
9:19
-0:55
23M
23.00 mi14:23:263:30:449:1012:09
9:42
+0:23
24M
24.00 mi14:32:543:40:129:119:28
9:28
-0:14
40K
24.85 mi14:41:213:48:399:128:27
9:53
+0:25
25.2M
25.20 mi14:44:553:52:139:133:34
10:21
+0:28
Finish
26.22 mi14:54:454:02:039:149:50
9:39
-0:42

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

8:46 /mi

Average Pace

9:14 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:17:49

82% of race

Time at Steady Pace

40:40

17% of race

Time at Slower Pace

3:34

1% of race

Average Pace: 9:14 /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 mi11:19:5527:138:4627:13
8:46
#19231
10K
6.21 mi11:47:1154:298:4627:16
8:47
#19495
15K
9.32 mi12:14:371:21:558:4727:26
8:50
#19546
20K
12.43 mi12:42:581:50:168:5228:21
9:07
#19716
Half
13.11 mi12:48:591:56:178:526:01
8:49
#19713
25K
15.53 mi13:11:202:18:388:5522:21
9:13
#19744
30K
18.64 mi13:41:062:48:249:0229:46
9:35
#19747
20M
20.00 mi13:54:053:01:239:0412:59
9:33
#19685
21M
21.00 mi14:04:193:11:379:0710:14
10:14
#19614
35K
21.75 mi14:11:173:18:359:086:58
9:19
#19606
23M
23.00 mi14:23:263:30:449:1012:09
9:42
#19569
24M
24.00 mi14:32:543:40:129:119:28
9:28
#19567
40K
24.85 mi14:41:213:48:399:128:27
9:53
#19571
25.2M
25.20 mi14:44:553:52:139:133:34
10:21
#19561
Finish
26.22 mi14:54:454:02:039:149:50
9:39
#19618
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi19231118631186319667(Top 74%)12159(Top 80%)12159(Top 1095%)
10K6.21 mi3.10 mi19495-26412015-15212015-15219805(Top 74%)12202(Top 80%)12202(Top 1099%)
15K9.32 mi3.11 mi19546-5112052-3712052-3719667(Top 74%)12159(Top 80%)12159(Top 1095%)
20K12.43 mi3.11 mi19716-17012144-9212144-9220250(Top 76%)12416(Top 82%)12416(Top 1119%)
Half13.11 mi0.68 mi19713+312150-612150-619568(Top 74%)12131(Top 80%)12131(Top 1093%)
25K15.53 mi2.42 mi19744-3112152-212152-219911(Top 75%)12249(Top 81%)12249(Top 1104%)
30K18.64 mi3.11 mi19747-312145+712145+719712(Top 74%)12095(Top 80%)12095(Top 1090%)
20M20.00 mi1.36 mi19685+6212116+2912116+2919053(Top 72%)11707(Top 77%)11707(Top 1055%)
21M21.00 mi1.00 mi19614+7112072+4412072+4418810(Top 71%)11557(Top 76%)11557(Top 1041%)
35K21.75 mi0.75 mi19606+812060+1212060+1219198(Top 72%)11681(Top 77%)11681(Top 1052%)
23M23.00 mi1.25 mi19569+3712042+1812042+1819078(Top 72%)11607(Top 76%)11607(Top 1046%)
24M24.00 mi1.00 mi19567+212027+1512027+1519096(Top 72%)11577(Top 76%)11577(Top 1043%)
40K24.85 mi0.85 mi19571-412023+412023+419633(Top 74%)11760(Top 77%)11760(Top 1059%)
25.2M25.20 mi0.35 mi19561+1012014+912014+918590(Top 70%)11299(Top 74%)11299(Top 1018%)
Finish26.22 mi1.02 mi19618-5712028-1412028-1420618(Top 77%)12237(Top 81%)12237(Top 1102%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19667

Males

12159

M60-64

12159

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19805

Males

12202

M60-64

12202

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19667

Males

12159

M60-64

12159

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

20250

Males

12416

M60-64

12416

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

19568

Males

12131

M60-64

12131

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

19911

Males

12249

M60-64

12249

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

19712

Males

12095

M60-64

12095

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

19053

Males

11707

M60-64

11707

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18810

Males

11557

M60-64

11557

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

19198

Males

11681

M60-64

11681

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

19078

Males

11607

M60-64

11607

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

19096

Males

11577

M60-64

11577

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19633

Males

11760

M60-64

11760

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18590

Males

11299

M60-64

11299

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2story building
+22ft-21ft

Overall

20618

Males

12237

M60-64

12237

Passing Analysis

Category:
Athletes Passed
1297
Passed By
1684
Net Change
-387
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19231
5K → 10K212476-264#19231#19495
10K → 15K165216-51#19495#19546
15K → 20K107277-170#19546#19716
20K → Half3532+3#19716#19713
Half → 25K96127-31#19713#19744
25K → 30K174177-3#19744#19747
30K → 20M11048+62#19747#19685
20M → 21M11847+71#19685#19614
21M → 35K4133+8#19614#19606
35K → 23M9255+37#19606#19569
23M → 24M5149+2#19569#19567
24M → 40K4347-4#19567#19571
40K → 25.2M2717+10#19571#19561
25.2M → Finish2683-57#19561#19618
TOTALS12971684-387
📊

Passing Visuals

Category:
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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