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BOSTON MARATHON 2023

Gil Zilberberg

Bib: 27075•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:53/mi
27:35
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
54:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:33/mi
1:20:39
↑ 67↓ 78
20K· 12.43 mi
8:41/mi
1:47:39
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:53:32
↑ 19↓ 370.5%
25K· 15.53 mi
8:52/mi
2:15:01
↑ 66↓ 880.2%
30K· 18.64 mi
9:00/mi
2:43:00
↑ 181↓ 1480.2%
20M
9:07/mi
2:55:24
↑ 64↓ 500.2%
21M
9:51/mi
3:05:15
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:11:49
↑ 17↓ 861.7%
23M
9:02/mi
3:23:08
↑ 23↓ 630.6%
24M
8:45/mi
3:31:53
↓ 821.3%
40K· 24.85 mi
8:59/mi
3:39:34
↓ 200.3%
25.2M
9:49/mi
3:42:57
↑ 13↓ 160.2%
Finish· 26.22 mi
9:07/mi
3:52:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:32
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time1:58:42
Pace9:03 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:0027:358:5327:35
8:53
-
10K
6.21 mi12:11:3154:068:4226:31
8:32
-0:21
15K
9.32 mi12:38:041:20:398:3926:33
8:33
+0:01
20K
12.43 mi13:05:041:47:398:4027:00
8:41
+0:08
Half
13.11 mi13:10:571:53:328:405:53
8:37
-0:04
25K
15.53 mi13:32:262:15:018:4121:29
8:52
+0:15
30K
18.64 mi14:00:252:43:008:4527:59
9:00
+0:08
20M
20.00 mi14:12:492:55:248:4612:24
9:07
+0:07
21M
21.00 mi14:22:403:05:158:499:51
9:51
+0:44
35K
21.75 mi14:29:143:11:498:496:34
8:47
-1:04
23M
23.00 mi14:40:333:23:088:5011:19
9:02
+0:15
24M
24.00 mi14:49:183:31:538:508:45
8:45
-0:17
40K
24.85 mi14:56:593:39:348:507:41
8:59
+0:14
25.2M
25.20 mi15:00:223:42:578:513:23
9:49
+0:50
Finish
26.22 mi15:09:393:52:148:529:17
9:07
-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

8:32 /mi

Average Pace

8:52 /mi

Slowest Pace

9:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:39:00

94% of race

Time at Steady Pace

13:14

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:51 /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 mi11:45:0027:358:5327:35
8:53
#19873
10K
6.21 mi12:11:3154:068:4226:31
8:32
#19133
15K
9.32 mi12:38:041:20:398:3926:33
8:33
#18760
20K
12.43 mi13:05:041:47:398:4027:00
8:41
#18596
Half
13.11 mi13:10:571:53:328:405:53
8:37
#18569
25K
15.53 mi13:32:262:15:018:4121:29
8:52
#18520
30K
18.64 mi14:00:252:43:008:4527:59
9:00
#18245
20M
20.00 mi14:12:492:55:248:4612:24
9:07
#18150
21M
21.00 mi14:22:403:05:158:499:51
9:51
#18086
35K
21.75 mi14:29:143:11:498:496:34
8:47
#18063
23M
23.00 mi14:40:333:23:088:5011:19
9:02
#17957
24M
24.00 mi14:49:183:31:538:508:45
8:45
#17878
40K
24.85 mi14:56:593:39:348:507:41
8:59
#17811
25.2M
25.20 mi15:00:223:42:578:513:23
9:49
#17794
Finish
26.22 mi15:09:393:52:148:529:17
9:07
#17813
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi19873121191211918102(Top 68%)11521(Top 76%)11521(Top 514%)
10K6.21 mi3.10 mi19133+74011876+24311876+24318449(Top 69%)11690(Top 77%)11690(Top 522%)
15K9.32 mi3.11 mi18760+37311756+12011756+12018102(Top 68%)11521(Top 76%)11521(Top 514%)
20K12.43 mi3.11 mi18596+16411711+4511711+4518049(Top 68%)11489(Top 76%)11489(Top 513%)
Half13.11 mi0.68 mi18569+2711702+911702+918425(Top 69%)11664(Top 77%)11664(Top 520%)
25K15.53 mi2.42 mi18520+4911656+4611656+4618261(Top 69%)11539(Top 76%)11539(Top 515%)
30K18.64 mi3.11 mi18245+27511509+14711509+14717195(Top 65%)10991(Top 72%)10991(Top 490%)
20M20.00 mi1.36 mi18150+9511461+4811461+4817184(Top 65%)10892(Top 72%)10892(Top 486%)
21M21.00 mi1.00 mi18086+6411418+4311418+4317429(Top 65%)10964(Top 72%)10964(Top 489%)
35K21.75 mi0.75 mi18063+2311409+911409+916813(Top 63%)10621(Top 70%)10621(Top 474%)
23M23.00 mi1.25 mi17957+10611347+6211347+6216231(Top 61%)10348(Top 68%)10348(Top 462%)
24M24.00 mi1.00 mi17878+7911302+4511302+4515925(Top 60%)10143(Top 67%)10143(Top 453%)
40K24.85 mi0.85 mi17811+6711270+3211270+3216057(Top 60%)10154(Top 67%)10154(Top 453%)
25.2M25.20 mi0.35 mi17794+1711258+1211258+1216552(Top 62%)10364(Top 68%)10364(Top 462%)
Finish26.22 mi1.02 mi17813-1911254+411254+418491(Top 69%)11304(Top 74%)11304(Top 504%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

18102

Males

11521

M40-44

11521

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18449

Males

11690

M40-44

11690

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

18102

Males

11521

M40-44

11521

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

18049

Males

11489

M40-44

11489

20K→Half

12.4 - 13.1 mi

Top 69%
×2story building
+19ft-37ft

Overall

18425

Males

11664

M40-44

11664

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

18261

Males

11539

M40-44

11539

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17195

Males

10991

M40-44

10991

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17184

Males

10892

M40-44

10892

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

17429

Males

10964

M40-44

10964

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16813

Males

10621

M40-44

10621

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

16231

Males

10348

M40-44

10348

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

15925

Males

10143

M40-44

10143

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16057

Males

10154

M40-44

10154

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16552

Males

10364

M40-44

10364

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18491

Males

11304

M40-44

11304

Passing Analysis

Category:
Athletes Passed
2749
Passed By
689
Net Change
+2060
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19873
5K → 10K847107+740#19873#19133
10K → 15K42855+373#19133#18760
15K → 20K24480+164#18760#18596
20K → Half4518+27#18596#18569
Half → 25K14798+49#18569#18520
25K → 30K32853+275#18520#18245
30K → 20M13237+95#18245#18150
20M → 21M13268+64#18150#18086
21M → 35K5633+23#18086#18063
35K → 23M14034+106#18063#17957
23M → 24M9314+79#17957#17878
24M → 40K8114+67#17878#17811
40K → 25.2M3619+17#17811#17794
25.2M → Finish4059-19#17794#17813
TOTALS2749689+2060
📊

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