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BOSTON MARATHON 2023

Ernst Terhaar

Bib: 16092•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Top 49%
Masters (Masters Men)
#0 / 9891
Top 38%
Division (M55-59)
#0 / 1422
Top 19%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
23:13
Rank: #9385
Start → 5K
23:13 | 7:28/mi
10K· 6.21 mi
45:44
Rank: #8886 (+499)
5K → 10K
22:31 | 7:15/mi
15K· 9.32 mi
1:08:26
Rank: #8781 (+105)
10K → 15K
22:42 | 7:18/mi
20K· 12.43 mi
1:31:35
Rank: #8759 (+22)
15K → 20K
23:09 | 7:27/mi
Half· 13.11 mi
1:36:35
Rank: #8767 (-8)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:54:50
Rank: #8786 (-19)
Half → 25K
18:15 | 7:32/mi
30K· 18.64 mi
2:19:17
Rank: #8942 (-156)
25K → 30K
24:27 | 7:52/mi
20M
2:29:59
Rank: #8944 (-2)
30K → 20M
10:42 | 7:52/mi
21M
2:38:28
Rank: #8996 (-52)
20M → 21M
8:29 | 8:29/mi
35K· 21.75 mi
2:44:15
Rank: #9030 (-34)
21M → 35K
5:47 | 7:44/mi
23M
2:54:13
Rank: #9031 (-1)
35K → 23M
9:58 | 7:58/mi
24M
3:01:58
Rank: #9037 (-6)
23M → 24M
7:45 | 7:45/mi
40K· 24.85 mi
3:09:00
Rank: #9091 (-54)
24M → 40K
7:02 | 8:14/mi
25.2M
3:12:06
Rank: #9145 (-54)
40K → 25.2M
3:06 | 8:59/mi
Finish· 26.22 mi
3:20:17
Rank: #9272 (-127)
25.2M → Finish
8:11 | 8:02/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:35
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:43:42
Pace7:55 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:5523:137:2823:13
7:28
-
10K
6.21 mi11:36:2645:447:2222:31
7:15
-0:13
15K
9.32 mi11:59:081:08:267:2122:42
7:18
+0:03
20K
12.43 mi12:22:171:31:357:2223:09
7:27
+0:09
Half
13.11 mi12:27:171:36:357:225:00
7:20
-0:07
25K
15.53 mi12:45:321:54:507:2418:15
7:32
+0:12
30K
18.64 mi13:09:592:19:177:2824:27
7:52
+0:20
20M
20.00 mi13:20:412:29:597:3010:42
7:52
0:00
21M
21.00 mi13:29:102:38:287:338:29
8:29
+0:37
35K
21.75 mi13:34:572:44:157:335:47
7:44
-0:45
23M
23.00 mi13:44:552:54:137:349:58
7:58
+0:14
24M
24.00 mi13:52:403:01:587:357:45
7:45
-0:13
40K
24.85 mi13:59:423:09:007:367:02
8:14
+0:29
25.2M
25.20 mi14:02:483:12:067:373:06
8:59
+0:45
Finish
26.22 mi14:10:593:20:177:398:11
8:02
-0:57

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

7:15 /mi

Average Pace

7:39 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:36:35

48% of race

Time at Steady Pace

1:16:54

38% of race

Time at Slower Pace

26:48

13% of race

Average Pace: 7:38 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:13:5523:137:2823:13
7:28
#9385
10K
6.21 mi11:36:2645:447:2222:31
7:15
#8886
15K
9.32 mi11:59:081:08:267:2122:42
7:18
#8781
20K
12.43 mi12:22:171:31:357:2223:09
7:27
#8759
Half
13.11 mi12:27:171:36:357:225:00
7:20
#8767
25K
15.53 mi12:45:321:54:507:2418:15
7:32
#8786
30K
18.64 mi13:09:592:19:177:2824:27
7:52
#8942
20M
20.00 mi13:20:412:29:597:3010:42
7:52
#8944
21M
21.00 mi13:29:102:38:287:338:29
8:29
#8996
35K
21.75 mi13:34:572:44:157:335:47
7:44
#9030
23M
23.00 mi13:44:552:54:137:349:58
7:58
#9031
24M
24.00 mi13:52:403:01:587:357:45
7:45
#9037
40K
24.85 mi13:59:423:09:007:367:02
8:14
#9091
25.2M
25.20 mi14:02:483:12:067:373:06
8:59
#9145
Finish
26.22 mi14:10:593:20:177:398:11
8:02
#9272
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi9385780278028598(Top 32%)7307(Top 48%)7307(Top 514%)
10K6.21 mi3.10 mi8886+4997509+2937509+2938463(Top 32%)7238(Top 48%)7238(Top 509%)
15K9.32 mi3.11 mi8781+1057427+827427+828598(Top 32%)7307(Top 48%)7307(Top 514%)
20K12.43 mi3.11 mi8759+227414+137414+138914(Top 33%)7453(Top 49%)7453(Top 524%)
Half13.11 mi0.68 mi8767-87412+27412+28802(Top 33%)7393(Top 49%)7393(Top 520%)
25K15.53 mi2.42 mi8786-197406+67406+68971(Top 34%)7418(Top 49%)7418(Top 522%)
30K18.64 mi3.11 mi8942-1567466-607466-609882(Top 37%)7765(Top 51%)7765(Top 546%)
20M20.00 mi1.36 mi8944-27452+147452+149371(Top 35%)7399(Top 49%)7399(Top 520%)
21M21.00 mi1.00 mi8996-527454-27454-210362(Top 39%)7782(Top 51%)7782(Top 547%)
35K21.75 mi0.75 mi9030-347468-147468-1410115(Top 38%)7675(Top 51%)7675(Top 540%)
23M23.00 mi1.25 mi9031-17438+307438+309459(Top 36%)7205(Top 47%)7205(Top 507%)
24M24.00 mi1.00 mi9037-67414+247414+249405(Top 35%)7103(Top 47%)7103(Top 500%)
40K24.85 mi0.85 mi9091-547431-177431-1711494(Top 43%)8060(Top 53%)8060(Top 567%)
25.2M25.20 mi0.35 mi9145-547447-167447-1612349(Top 46%)8412(Top 55%)8412(Top 592%)
Finish26.22 mi1.02 mi9272-1277496-497496-4912308(Top 46%)8422(Top 55%)8422(Top 592%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 32%
×21stories
+97ft-345ft

Overall

8598

Males

7307

M55-59

7307

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

8463

Males

7238

M55-59

7238

10K→15K

6.2 - 9.3 mi

Top 32%
×3stories
+67ft-78ft

Overall

8598

Males

7307

M55-59

7307

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

8914

Males

7453

M55-59

7453

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8802

Males

7393

M55-59

7393

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

8971

Males

7418

M55-59

7418

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9882

Males

7765

M55-59

7765

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9371

Males

7399

M55-59

7399

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10362

Males

7782

M55-59

7782

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10115

Males

7675

M55-59

7675

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

9459

Males

7205

M55-59

7205

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9405

Males

7103

M55-59

7103

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11494

Males

8060

M55-59

8060

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12349

Males

8412

M55-59

8412

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12308

Males

8422

M55-59

8422

Passing Analysis

Category:
Athletes Passed
1548
Passed By
1435
Net Change
+113
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9385
5K → 10K58687+499#9385#8886
10K → 15K19691+105#8886#8781
15K → 20K140118+22#8781#8759
20K → Half2331-8#8759#8767
Half → 25K99118-19#8767#8786
25K → 30K123279-156#8786#8942
30K → 20M8284-2#8942#8944
20M → 21M59111-52#8944#8996
21M → 35K2862-34#8996#9030
35K → 23M7980-1#9030#9031
23M → 24M6369-6#9031#9037
24M → 40K3488-54#9037#9091
40K → 25.2M1266-54#9091#9145
25.2M → Finish24151-127#9145#9272
TOTALS15481435+113
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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