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BOSTON MARATHON 2023

Fengming Lou

Bib: 12892•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 43%
Division (M50-54)
#0 / 2052
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:19
Rank: #9668
Start → 5K
23:19 | 7:30/mi
10K· 6.21 mi
46:20
Rank: #9625 (+43)
5K → 10K
23:01 | 7:25/mi
15K· 9.32 mi
1:09:23
Rank: #9564 (+61)
10K → 15K
23:03 | 7:25/mi
20K· 12.43 mi
1:32:55
Rank: #9622 (-58)
15K → 20K
23:32 | 7:34/mi
Half· 13.11 mi
1:38:03
Rank: #9657 (-35)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:56:36
Rank: #9702 (-45)
Half → 25K
18:33 | 7:39/mi
30K· 18.64 mi
2:21:43
Rank: #9988 (-286)
25K → 30K
25:07 | 8:05/mi
20M
2:32:55
Rank: #10124 (-136)
30K → 20M
11:12 | 8:15/mi
21M
2:41:36
Rank: #10176 (-52)
20M → 21M
8:41 | 8:41/mi
35K· 21.75 mi
2:47:30
Rank: #10209 (-33)
21M → 35K
5:54 | 7:53/mi
23M
2:57:43
Rank: #10226 (-17)
35K → 23M
10:13 | 8:10/mi
24M
3:05:38
Rank: #10222 (+4)
23M → 24M
7:55 | 7:55/mi
40K· 24.85 mi
3:12:32
Rank: #10195 (+27)
24M → 40K
6:54 | 8:04/mi
25.2M
3:15:34
Rank: #10202 (-7)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:23:43
Rank: #10272 (-70)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:03
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:45:40
Pace8:04 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5823:197:3023:19
7:30
-
10K
6.21 mi11:13:5946:207:2723:01
7:25
-0:05
15K
9.32 mi11:37:021:09:237:2723:03
7:25
0:00
20K
12.43 mi12:00:341:32:557:2923:32
7:34
+0:09
Half
13.11 mi12:05:421:38:037:295:08
7:31
-0:03
25K
15.53 mi12:24:151:56:367:3018:33
7:39
+0:08
30K
18.64 mi12:49:222:21:437:3625:07
8:05
+0:26
20M
20.00 mi13:00:342:32:557:3911:12
8:15
+0:10
21M
21.00 mi13:09:152:41:367:428:41
8:41
+0:26
35K
21.75 mi13:15:092:47:307:425:54
7:53
-0:48
23M
23.00 mi13:25:222:57:437:4410:13
8:10
+0:17
24M
24.00 mi13:33:173:05:387:447:55
7:55
-0:15
40K
24.85 mi13:40:113:12:327:456:54
8:04
+0:09
25.2M
25.20 mi13:43:133:15:347:463:02
8:48
+0:44
Finish
26.22 mi13:51:223:23:437:478:09
8:00
-0:48

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

7:25 /mi

Average Pace

7:47 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:35

84% of race

Time at Steady Pace

30:06

15% of race

Time at Slower Pace

3:02

1% of race

Average Pace: 7:46 /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 mi10:50:5823:197:3023:19
7:30
#9668
10K
6.21 mi11:13:5946:207:2723:01
7:25
#9625
15K
9.32 mi11:37:021:09:237:2723:03
7:25
#9564
20K
12.43 mi12:00:341:32:557:2923:32
7:34
#9622
Half
13.11 mi12:05:421:38:037:295:08
7:31
#9657
25K
15.53 mi12:24:151:56:367:3018:33
7:39
#9702
30K
18.64 mi12:49:222:21:437:3625:07
8:05
#9988
20M
20.00 mi13:00:342:32:557:3911:12
8:15
#10124
21M
21.00 mi13:09:152:41:367:428:41
8:41
#10176
35K
21.75 mi13:15:092:47:307:425:54
7:53
#10209
23M
23.00 mi13:25:222:57:437:4410:13
8:10
#10226
24M
24.00 mi13:33:173:05:387:447:55
7:55
#10222
40K
24.85 mi13:40:113:12:327:456:54
8:04
#10195
25.2M
25.20 mi13:43:133:15:347:463:02
8:48
#10202
Finish
26.22 mi13:51:223:23:437:478:09
8:00
#10272
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9668796779679503(Top 36%)7872(Top 52%)7872(Top 384%)
10K6.21 mi3.10 mi9625+437943+247943+249693(Top 36%)7989(Top 53%)7989(Top 389%)
15K9.32 mi3.11 mi9564+617909+347909+349503(Top 36%)7872(Top 52%)7872(Top 384%)
20K12.43 mi3.11 mi9622-587936-277936-279896(Top 37%)8018(Top 53%)8018(Top 391%)
Half13.11 mi0.68 mi9657-357957-217957-2110382(Top 39%)8291(Top 55%)8291(Top 404%)
25K15.53 mi2.42 mi9702-457963-67963-69909(Top 37%)7934(Top 52%)7934(Top 387%)
30K18.64 mi3.11 mi9988-2868088-1258088-12511536(Top 43%)8600(Top 57%)8600(Top 419%)
20M20.00 mi1.36 mi10124-1368126-388126-3811931(Top 45%)8671(Top 57%)8671(Top 423%)
21M21.00 mi1.00 mi10176-528132-68132-611533(Top 43%)8352(Top 55%)8352(Top 407%)
35K21.75 mi0.75 mi10209-338133-18133-111250(Top 42%)8232(Top 54%)8232(Top 401%)
23M23.00 mi1.25 mi10226-178105+288105+2810876(Top 41%)7901(Top 52%)7901(Top 385%)
24M24.00 mi1.00 mi10222+48076+298076+2910625(Top 40%)7721(Top 51%)7721(Top 376%)
40K24.85 mi0.85 mi10195+278038+388038+3810478(Top 39%)7590(Top 50%)7590(Top 370%)
25.2M25.20 mi0.35 mi10202-78027+118027+1111238(Top 42%)7901(Top 52%)7901(Top 385%)
Finish26.22 mi1.02 mi10272-708025+28025+212089(Top 45%)8324(Top 55%)8324(Top 406%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9503

Males

7872

M50-54

7872

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

9693

Males

7989

M50-54

7989

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9503

Males

7872

M50-54

7872

15K→20K

9.3 - 12.4 mi

Top 37%
×5stories
+106ft-86ft

Overall

9896

Males

8018

M50-54

8018

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10382

Males

8291

M50-54

8291

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9909

Males

7934

M50-54

7934

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11536

Males

8600

M50-54

8600

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

11931

Males

8671

M50-54

8671

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

11533

Males

8352

M50-54

8352

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11250

Males

8232

M50-54

8232

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10876

Males

7901

M50-54

7901

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

10625

Males

7721

M50-54

7721

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10478

Males

7590

M50-54

7590

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11238

Males

7901

M50-54

7901

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

12089

Males

8324

M50-54

8324

Passing Analysis

Category:
Athletes Passed
1300*
Passed By
1903
Net Change
-604
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9668
5K → 10K319276+43#9668#9625
10K → 15K196135+61#9625#9564
15K → 20K125183-58#9564#9622
20K → Half1247-35#9622#9657
Half → 25K110155-45#9657#9702
25K → 30K79*365-286#9702#9988
30K → 20M51186-136#9988#10124
20M → 21M72124-52#10124#10176
21M → 35K3467-33#10176#10209
35K → 23M7996-17#10209#10226
23M → 24M6561+4#10226#10222
24M → 40K8457+27#10222#10195
40K → 25.2M26*33-7#10195#10202
25.2M → Finish48118-70#10202#10272
TOTALS1300*1903-604

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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