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BOSTON MARATHON 2023

Bradley Silber

Bib: 29981•M

IL

0:00
0:00
/ mi
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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
29:04
Rank: #21683
Start → 5K
29:04 | 9:21/mi
10K· 6.21 mi
56:28
Rank: #21001 (+682)
5K → 10K
27:24 | 8:49/mi
15K· 9.32 mi
1:23:41
Rank: #20472 (+529)
10K → 15K
27:13 | 8:46/mi
20K· 12.43 mi
1:50:54
Rank: #19981 (+491)
15K → 20K
27:13 | 8:46/mi
Half· 13.11 mi
1:56:52
Rank: #19920 (+61)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:18:03
Rank: #19551 (+369)
Half → 25K
21:11 | 8:44/mi
30K· 18.64 mi
2:45:16
Rank: #18917 (+634)
25K → 30K
27:13 | 8:46/mi
20M
2:57:08
Rank: #18647 (+270)
30K → 20M
11:52 | 8:44/mi
21M
3:06:30
Rank: #18427 (+220)
20M → 21M
9:22 | 9:22/mi
35K· 21.75 mi
3:13:02
Rank: #18356 (+71)
21M → 35K
6:32 | 8:44/mi
23M
3:23:56
Rank: #18137 (+219)
35K → 23M
10:54 | 8:42/mi
24M
3:31:58
Rank: #17897 (+240)
23M → 24M
8:02 | 8:02/mi
40K· 24.85 mi
3:38:43
Rank: #17615 (+282)
24M → 40K
6:45 | 7:54/mi
25.2M
3:41:38
Rank: #17476 (+139)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:49:05
Rank: #17125 (+351)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:56:52
Pace8:55 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:52:13
Pace8:34 /mi
📊Negative Split: 4.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1529:049:2129:04
9:21
-
10K
6.21 mi12:16:3956:289:0527:24
8:49
-0:32
15K
9.32 mi12:43:521:23:418:5927:13
8:46
-0:03
20K
12.43 mi13:11:051:50:548:5527:13
8:46
0:00
Half
13.11 mi13:17:031:56:528:555:58
8:45
-0:01
25K
15.53 mi13:38:142:18:038:5321:11
8:44
-0:01
30K
18.64 mi14:05:272:45:168:5227:13
8:46
+0:02
20M
20.00 mi14:17:192:57:088:5111:52
8:44
-0:02
21M
21.00 mi14:26:413:06:308:539:22
9:22
+0:38
35K
21.75 mi14:33:133:13:028:536:32
8:44
-0:38
23M
23.00 mi14:44:073:23:568:5210:54
8:42
-0:02
24M
24.00 mi14:52:093:31:588:508:02
8:02
-0:40
40K
24.85 mi14:58:543:38:438:486:45
7:54
-0:08
25.2M
25.20 mi15:01:493:41:388:482:55
8:27
+0:33
Finish
26.22 mi15:09:163:49:058:457:27
7:19
-1:08

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

7:19 /mi

Average Pace

8:45 /mi

Slowest Pace

9:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:09

11% of race

Time at Steady Pace

2:45:30

72% of race

Time at Slower Pace

38:26

17% of race

Average Pace: 8:44 /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 mi11:49:1529:049:2129:04
9:21
#21683
10K
6.21 mi12:16:3956:289:0527:24
8:49
#21001
15K
9.32 mi12:43:521:23:418:5927:13
8:46
#20472
20K
12.43 mi13:11:051:50:548:5527:13
8:46
#19981
Half
13.11 mi13:17:031:56:528:555:58
8:45
#19920
25K
15.53 mi13:38:142:18:038:5321:11
8:44
#19551
30K
18.64 mi14:05:272:45:168:5227:13
8:46
#18917
20M
20.00 mi14:17:192:57:088:5111:52
8:44
#18647
21M
21.00 mi14:26:413:06:308:539:22
9:22
#18427
35K
21.75 mi14:33:133:13:028:536:32
8:44
#18356
23M
23.00 mi14:44:073:23:568:5210:54
8:42
#18137
24M
24.00 mi14:52:093:31:588:508:02
8:02
#17897
40K
24.85 mi14:58:543:38:438:486:45
7:54
#17615
25.2M
25.20 mi15:01:493:41:388:482:55
8:27
#17476
Finish
26.22 mi15:09:163:49:058:457:27
7:19
#17125
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi21683129281292819286(Top 72%)12002(Top 79%)12002(Top 227%)
10K6.21 mi3.10 mi21001+68212655+27312655+27320026(Top 75%)12288(Top 81%)12288(Top 233%)
15K9.32 mi3.11 mi20472+52912449+20612449+20619286(Top 72%)12002(Top 79%)12002(Top 227%)
20K12.43 mi3.11 mi19981+49112245+20412245+20418458(Top 69%)11664(Top 77%)11664(Top 221%)
Half13.11 mi0.68 mi19920+6112220+2512220+2519142(Top 72%)11939(Top 79%)11939(Top 226%)
25K15.53 mi2.42 mi19551+36912075+14512075+14517572(Top 66%)11227(Top 74%)11227(Top 212%)
30K18.64 mi3.11 mi18917+63411806+26911806+26915828(Top 59%)10407(Top 69%)10407(Top 197%)
20M20.00 mi1.36 mi18647+27011669+13711669+13715051(Top 57%)10013(Top 66%)10013(Top 189%)
21M21.00 mi1.00 mi18427+22011562+10711562+10715324(Top 58%)10067(Top 66%)10067(Top 190%)
35K21.75 mi0.75 mi18356+7111526+3611526+3616574(Top 62%)10526(Top 69%)10526(Top 199%)
23M23.00 mi1.25 mi18137+21911423+10311423+10314411(Top 54%)9543(Top 63%)9543(Top 181%)
24M24.00 mi1.00 mi17897+24011313+11011313+11011475(Top 43%)8151(Top 54%)8151(Top 154%)
40K24.85 mi0.85 mi17615+28211180+13311180+1339320(Top 35%)7006(Top 46%)7006(Top 133%)
25.2M25.20 mi0.35 mi17476+13911116+6411116+649264(Top 35%)6924(Top 46%)6924(Top 131%)
Finish26.22 mi1.02 mi17125+35110962+15410962+1547208(Top 27%)5699(Top 38%)5699(Top 108%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19286

Males

12002

M18-39

12002

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

20026

Males

12288

M18-39

12288

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19286

Males

12002

M18-39

12002

15K→20K

9.3 - 12.4 mi

Top 69%
×5stories
+106ft-86ft

Overall

18458

Males

11664

M18-39

11664

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

19142

Males

11939

M18-39

11939

Half→25K

13.1 - 15.5 mi

Top 66%
×4stories
+66ft-88ft

Overall

17572

Males

11227

M18-39

11227

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

15828

Males

10407

M18-39

10407

30K→20M

18.6 - 20.0 mi

Top 57%
×5stories
+64ft-50ft

Overall

15051

Males

10013

M18-39

10013

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

15324

Males

10067

M18-39

10067

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16574

Males

10526

M18-39

10526

35K→23M

21.8 - 23.0 mi

Top 54%
×5stories
+23ft-63ft

Overall

14411

Males

9543

M18-39

9543

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

11475

Males

8151

M18-39

8151

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9320

Males

7006

M18-39

7006

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9264

Males

6924

M18-39

6924

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7208

Males

5699

M18-39

5699

Passing Analysis

Category:
Athletes Passed
4726
Passed By
168
Net Change
+4558
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21683
5K → 10K75068+682#21683#21001
10K → 15K55425+529#21001#20472
15K → 20K50615+491#20472#19981
20K → Half709+61#19981#19920
Half → 25K3767+369#19920#19551
25K → 30K6439+634#19551#18917
30K → 20M2744+270#18917#18647
20M → 21M23010+220#18647#18427
21M → 35K8514+71#18427#18356
35K → 23M2212+219#18356#18137
23M → 24M2433+240#18137#17897
24M → 40K2831+282#17897#17615
40K → 25.2M1401+139#17615#17476
25.2M → Finish3510+351#17476#17125
TOTALS4726168+4558
📊

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