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BOSTON MARATHON 2023

Frank Zeng

Bib: 8233•M

VA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 24%
Masters (Masters Men)
#0 / 9891
Top 11%
Division (M45-49)
#0 / 2252
Top 13%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:53
Rank: #3865
Start → 5K
20:53 | 6:43/mi
10K· 6.21 mi
41:57
Rank: #4491 (-626)
5K → 10K
21:04 | 6:47/mi
15K· 9.32 mi
1:03:05
Rank: #4680 (-189)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:24:17
Rank: #4657 (+23)
15K → 20K
21:12 | 6:49/mi
Half· 13.11 mi
1:28:55
Rank: #4677 (-20)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:45:30
Rank: #4614 (+63)
Half → 25K
16:35 | 6:50/mi
30K· 18.64 mi
2:07:18
Rank: #4562 (+52)
25K → 30K
21:48 | 7:01/mi
20M
2:16:45
Rank: #4488 (+74)
30K → 20M
9:27 | 6:57/mi
21M
2:24:00
Rank: #4378 (+110)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:28:56
Rank: #4293 (+85)
21M → 35K
4:56 | 6:36/mi
23M
2:37:27
Rank: #4163 (+130)
35K → 23M
8:31 | 6:48/mi
24M
2:44:03
Rank: #4048 (+115)
23M → 24M
6:36 | 6:36/mi
40K· 24.85 mi
2:49:48
Rank: #3962 (+86)
24M → 40K
5:45 | 6:44/mi
25.2M
2:52:06
Rank: #3842 (+120)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:58:53
Rank: #3809 (+33)
25.2M → Finish
6:47 | 6:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:55
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:29:58
Pace6:52 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:5720:536:4320:53
6:43
-
10K
6.21 mi11:07:0141:576:4521:04
6:47
+0:04
15K
9.32 mi11:28:091:03:056:4621:08
6:48
+0:01
20K
12.43 mi11:49:211:24:176:4721:12
6:49
+0:01
Half
13.11 mi11:53:591:28:556:474:38
6:47
-0:02
25K
15.53 mi12:10:341:45:306:4716:35
6:50
+0:03
30K
18.64 mi12:32:222:07:186:5021:48
7:01
+0:11
20M
20.00 mi12:41:492:16:456:509:27
6:57
-0:04
21M
21.00 mi12:49:042:24:006:517:15
7:15
+0:18
35K
21.75 mi12:54:002:28:566:514:56
6:36
-0:39
23M
23.00 mi13:02:312:37:276:518:31
6:48
+0:12
24M
24.00 mi13:09:072:44:036:506:36
6:36
-0:12
40K
24.85 mi13:14:522:49:486:505:45
6:44
+0:08
25.2M
25.20 mi13:17:102:52:066:502:18
6:40
-0:04
Finish
26.22 mi13:23:572:58:536:506:47
6:40
0:00

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

6:36 /mi

Average Pace

6:50 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:23

78% of race

Time at Steady Pace

38:30

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:45:5720:536:4320:53
6:43
#3865
10K
6.21 mi11:07:0141:576:4521:04
6:47
#4491
15K
9.32 mi11:28:091:03:056:4621:08
6:48
#4680
20K
12.43 mi11:49:211:24:176:4721:12
6:49
#4657
Half
13.11 mi11:53:591:28:556:474:38
6:47
#4677
25K
15.53 mi12:10:341:45:306:4716:35
6:50
#4614
30K
18.64 mi12:32:222:07:186:5021:48
7:01
#4562
20M
20.00 mi12:41:492:16:456:509:27
6:57
#4488
21M
21.00 mi12:49:042:24:006:517:15
7:15
#4378
35K
21.75 mi12:54:002:28:566:514:56
6:36
#4293
23M
23.00 mi13:02:312:37:276:518:31
6:48
#4163
24M
24.00 mi13:09:072:44:036:506:36
6:36
#4048
40K
24.85 mi13:14:522:49:486:505:45
6:44
#3962
25.2M
25.20 mi13:17:102:52:066:502:18
6:40
#3842
Finish
26.22 mi13:23:572:58:536:506:47
6:40
#3809
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3865363136315123(Top 19%)4740(Top 31%)4740(Top 210%)
10K6.21 mi3.10 mi4491-6264198-5674198-5675086(Top 19%)4704(Top 31%)4704(Top 209%)
15K9.32 mi3.11 mi4680-1894361-1634361-1635123(Top 19%)4740(Top 31%)4740(Top 210%)
20K12.43 mi3.11 mi4657+234345+164345+164644(Top 17%)4322(Top 28%)4322(Top 192%)
Half13.11 mi0.68 mi4677-204364-194364-195108(Top 19%)4718(Top 31%)4718(Top 210%)
25K15.53 mi2.42 mi4614+634307+574307+574477(Top 17%)4169(Top 27%)4169(Top 185%)
30K18.64 mi3.11 mi4562+524256+514256+514444(Top 17%)4121(Top 27%)4121(Top 183%)
20M20.00 mi1.36 mi4488+744186+704186+703734(Top 14%)3478(Top 23%)3478(Top 154%)
21M21.00 mi1.00 mi4378+1104090+964090+963361(Top 13%)3131(Top 21%)3131(Top 139%)
35K21.75 mi0.75 mi4293+854014+764014+762996(Top 11%)2807(Top 18%)2807(Top 125%)
23M23.00 mi1.25 mi4163+1303898+1163898+1162687(Top 10%)2520(Top 17%)2520(Top 112%)
24M24.00 mi1.00 mi4048+1153791+1073791+1072582(Top 10%)2410(Top 16%)2410(Top 107%)
40K24.85 mi0.85 mi3962+863709+823709+822484(Top 9%)2304(Top 15%)2304(Top 102%)
25.2M25.20 mi0.35 mi3842+1203607+1023607+102766(Top 3%)727(Top 5%)727(Top 32%)
Finish26.22 mi1.02 mi3809+333576+313576+313318(Top 12%)2976(Top 20%)2976(Top 132%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5123

Males

4740

M45-49

4740

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5086

Males

4704

M45-49

4704

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5123

Males

4740

M45-49

4740

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4644

Males

4322

M45-49

4322

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5108

Males

4718

M45-49

4718

Half→25K

13.1 - 15.5 mi

Top 17%
×4stories
+66ft-88ft

Overall

4477

Males

4169

M45-49

4169

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4444

Males

4121

M45-49

4121

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3734

Males

3478

M45-49

3478

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3361

Males

3131

M45-49

3131

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

2996

Males

2807

M45-49

2807

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2687

Males

2520

M45-49

2520

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2582

Males

2410

M45-49

2410

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2484

Males

2304

M45-49

2304

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

766

Males

727

M45-49

727

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3318

Males

2976

M45-49

2976

Passing Analysis

Category:
Athletes Passed
1379
Passed By
1323
Net Change
+56
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3865
5K → 10K51677-626#3865#4491
10K → 15K63252-189#4491#4680
15K → 20K11087+23#4680#4657
20K → Half1232-20#4657#4677
Half → 25K13168+63#4677#4614
25K → 30K153101+52#4614#4562
30K → 20M9925+74#4562#4488
20M → 21M12212+110#4488#4378
21M → 35K949+85#4378#4293
35K → 23M1366+130#4293#4163
23M → 24M12611+115#4163#4048
24M → 40K9812+86#4048#3962
40K → 25.2M1200+120#3962#3842
25.2M → Finish6431+33#3842#3809
TOTALS13791323+56
📊

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