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BOSTON MARATHON 2023

Terence Gerchberg

Bib: 21990•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:21
Rank: #17427
Start → 5K
26:21 | 8:29/mi
10K· 6.21 mi
52:15
Rank: #17270 (+157)
5K → 10K
25:54 | 8:20/mi
15K· 9.32 mi
1:17:28
Rank: #16590 (+680)
10K → 15K
25:13 | 8:07/mi
20K· 12.43 mi
1:44:40
Rank: #17079 (-489)
15K → 20K
27:12 | 8:45/mi
Half· 13.11 mi
1:50:19
Rank: #17047 (+32)
20K → Half
5:39 | 8:17/mi
25K· 15.53 mi
2:11:11
Rank: #17007 (+40)
Half → 25K
20:52 | 8:36/mi
30K· 18.64 mi
2:40:14
Rank: #17326 (-319)
25K → 30K
29:03 | 9:21/mi
20M
2:53:09
Rank: #17462 (-136)
30K → 20M
12:55 | 9:30/mi
21M
3:03:50
Rank: #17707 (-245)
20M → 21M
10:41 | 10:41/mi
35K· 21.75 mi
3:10:47
Rank: #17763 (-56)
21M → 35K
6:57 | 9:17/mi
23M
3:23:51
Rank: #18118 (-355)
35K → 23M
13:04 | 10:26/mi
24M
3:33:22
Rank: #18193 (-75)
23M → 24M
9:31 | 9:31/mi
40K· 24.85 mi
3:41:47
Rank: #18275 (-82)
24M → 40K
8:25 | 9:51/mi
25.2M
3:45:34
Rank: #18320 (-45)
40K → 25.2M
3:47 | 10:58/mi
Finish· 26.22 mi
3:55:19
Rank: #18431 (-111)
25.2M → Finish
9:45 | 9:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:19
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:05:00
Pace9:32 /mi
📊Positive Split: 13.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3326:218:2926:21
8:29
-
10K
6.21 mi11:45:2752:158:2525:54
8:20
-0:09
15K
9.32 mi12:10:401:17:288:1925:13
8:07
-0:13
20K
12.43 mi12:37:521:44:408:2527:12
8:45
+0:38
Half
13.11 mi12:43:311:50:198:255:39
8:17
-0:28
25K
15.53 mi13:04:232:11:118:2720:52
8:36
+0:19
30K
18.64 mi13:33:262:40:148:3629:03
9:21
+0:45
20M
20.00 mi13:46:212:53:098:3912:55
9:30
+0:09
21M
21.00 mi13:57:023:03:508:4510:41
10:41
+1:11
35K
21.75 mi14:03:593:10:478:466:57
9:17
-1:24
23M
23.00 mi14:17:033:23:518:5213:04
10:26
+1:09
24M
24.00 mi14:26:343:33:228:539:31
9:31
-0:55
40K
24.85 mi14:34:593:41:478:558:25
9:51
+0:20
25.2M
25.20 mi14:38:463:45:348:573:47
10:58
+1:07
Finish
26.22 mi14:48:313:55:198:599:45
9:34
-1:24

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

8:07 /mi

Average Pace

8:59 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:11

56% of race

Time at Steady Pace

1:08:11

29% of race

Time at Slower Pace

35:57

15% of race

Average Pace: 8:58 /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 mi11:19:3326:218:2926:21
8:29
#17427
10K
6.21 mi11:45:2752:158:2525:54
8:20
#17270
15K
9.32 mi12:10:401:17:288:1925:13
8:07
#16590
20K
12.43 mi12:37:521:44:408:2527:12
8:45
#17079
Half
13.11 mi12:43:311:50:198:255:39
8:17
#17047
25K
15.53 mi13:04:232:11:118:2720:52
8:36
#17007
30K
18.64 mi13:33:262:40:148:3629:03
9:21
#17326
20M
20.00 mi13:46:212:53:098:3912:55
9:30
#17462
21M
21.00 mi13:57:023:03:508:4510:41
10:41
#17707
35K
21.75 mi14:03:593:10:478:466:57
9:17
#17763
23M
23.00 mi14:17:033:23:518:5213:04
10:26
#18118
24M
24.00 mi14:26:343:33:228:539:31
9:31
#18193
40K
24.85 mi14:34:593:41:478:558:25
9:51
#18275
25.2M
25.20 mi14:38:463:45:348:573:47
10:58
#18320
Finish
26.22 mi14:48:313:55:198:599:45
9:34
#18431
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi17427112031120315274(Top 57%)10418(Top 69%)10418(Top 508%)
10K6.21 mi3.10 mi17270+15711153+5011153+5017157(Top 64%)11171(Top 74%)11171(Top 544%)
15K9.32 mi3.11 mi16590+68010911+24210911+24215274(Top 57%)10418(Top 69%)10418(Top 508%)
20K12.43 mi3.11 mi17079-48911081-17011081-17018432(Top 69%)11659(Top 77%)11659(Top 568%)
Half13.11 mi0.68 mi17047+3211069+1211069+1216351(Top 61%)10837(Top 71%)10837(Top 528%)
25K15.53 mi2.42 mi17007+4011037+3211037+3216831(Top 63%)10905(Top 72%)10905(Top 531%)
30K18.64 mi3.11 mi17326-31911157-12011157-12018818(Top 71%)11704(Top 77%)11704(Top 570%)
20M20.00 mi1.36 mi17462-13611189-3211189-3218865(Top 71%)11620(Top 77%)11620(Top 566%)
21M21.00 mi1.00 mi17707-24511271-8211271-8220088(Top 75%)12090(Top 80%)12090(Top 589%)
35K21.75 mi0.75 mi17763-5611279-811279-819087(Top 72%)11626(Top 77%)11626(Top 567%)
23M23.00 mi1.25 mi18118-35511417-13811417-13821150(Top 79%)12519(Top 82%)12519(Top 610%)
24M24.00 mi1.00 mi18193-7511434-1711434-1719260(Top 72%)11639(Top 77%)11639(Top 567%)
40K24.85 mi0.85 mi18275-8211451-1711451-1719507(Top 73%)11707(Top 77%)11707(Top 571%)
25.2M25.20 mi0.35 mi18320-4511474-2311474-2320355(Top 76%)12082(Top 80%)12082(Top 589%)
Finish26.22 mi1.02 mi18431-11111512-3811512-3820336(Top 76%)12110(Top 80%)12110(Top 590%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

15274

Males

10418

M50-54

10418

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

17157

Males

11171

M50-54

11171

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

15274

Males

10418

M50-54

10418

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

18432

Males

11659

M50-54

11659

20K→Half

12.4 - 13.1 mi

Top 61%
×2stories
+19ft-37ft

Overall

16351

Males

10837

M50-54

10837

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

16831

Males

10905

M50-54

10905

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

18818

Males

11704

M50-54

11704

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

18865

Males

11620

M50-54

11620

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

20088

Males

12090

M50-54

12090

21M→35K

21.0 - 21.8 mi

Top 72%
×7stories
+17ft-86ft

Overall

19087

Males

11626

M50-54

11626

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

21150

Males

12519

M50-54

12519

23M→24M

23.0 - 24.0 mi

Top 72%
×6stories
+12ft-82ft

Overall

19260

Males

11639

M50-54

11639

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19507

Males

11707

M50-54

11707

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20355

Males

12082

M50-54

12082

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2stories
+22ft-21ft

Overall

20336

Males

12110

M50-54

12110

Passing Analysis

Category:
Athletes Passed
1673
Passed By
2677
Net Change
-1004
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17427
5K → 10K397240+157#17427#17270
10K → 15K71333+680#17270#16590
15K → 20K65554-489#16590#17079
20K → Half4311+32#17079#17047
Half → 25K13494+40#17047#17007
25K → 30K90409-319#17007#17326
30K → 20M50186-136#17326#17462
20M → 21M29274-245#17462#17707
21M → 35K3793-56#17707#17763
35K → 23M22377-355#17763#18118
23M → 24M30105-75#18118#18193
24M → 40K31113-82#18193#18275
40K → 25.2M1055-45#18275#18320
25.2M → Finish22133-111#18320#18431
TOTALS16732677-1004
📊

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