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BOSTON MARATHON 2023

Fred Chen

Bib: 4260•M

HI

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0:00
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 19%
Division (M18-39)
#0 / 5285
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:51
Rank: #3758
Start → 5K
20:51 | 6:43/mi
10K· 6.21 mi
41:16
Rank: #3456 (+302)
5K → 10K
20:25 | 6:34/mi
15K· 9.32 mi
1:01:32
Rank: #3212 (+244)
10K → 15K
20:16 | 6:31/mi
20K· 12.43 mi
1:21:56
Rank: #3035 (+177)
15K → 20K
20:24 | 6:34/mi
Half· 13.11 mi
1:26:22
Rank: #3011 (+24)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:42:16
Rank: #2885 (+126)
Half → 25K
15:54 | 6:33/mi
30K· 18.64 mi
2:03:06
Rank: #2765 (+120)
25K → 30K
20:50 | 6:42/mi
20M
2:12:19
Rank: #2729 (+36)
30K → 20M
9:13 | 6:47/mi
21M
2:19:31
Rank: #2706 (+23)
20M → 21M
7:12 | 7:12/mi
35K· 21.75 mi
2:24:28
Rank: #2701 (+5)
21M → 35K
4:57 | 6:37/mi
23M
2:33:18
Rank: #2761 (-60)
35K → 23M
8:50 | 7:03/mi
24M
2:40:14
Rank: #2823 (-62)
23M → 24M
6:56 | 6:56/mi
40K· 24.85 mi
2:46:24
Rank: #2885 (-62)
24M → 40K
6:10 | 7:13/mi
25.2M
2:49:06
Rank: #2917 (-32)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
2:56:18
Rank: #2999 (-82)
25.2M → Finish
7:12 | 7:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:22
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:29:56
Pace6:52 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0320:516:4320:51
6:43
-
10K
6.21 mi10:43:2841:166:3820:25
6:34
-0:09
15K
9.32 mi11:03:441:01:326:3620:16
6:31
-0:03
20K
12.43 mi11:24:081:21:566:3620:24
6:34
+0:03
Half
13.11 mi11:28:341:26:226:354:26
6:30
-0:04
25K
15.53 mi11:44:281:42:166:3515:54
6:33
+0:03
30K
18.64 mi12:05:182:03:066:3620:50
6:42
+0:09
20M
20.00 mi12:14:312:12:196:379:13
6:47
+0:05
21M
21.00 mi12:21:432:19:316:397:12
7:12
+0:25
35K
21.75 mi12:26:402:24:286:394:57
6:37
-0:35
23M
23.00 mi12:35:302:33:186:408:50
7:03
+0:26
24M
24.00 mi12:42:262:40:146:416:56
6:56
-0:07
40K
24.85 mi12:48:362:46:246:426:10
7:13
+0:17
25.2M
25.20 mi12:51:182:49:066:432:42
7:50
+0:37
Finish
26.22 mi12:58:302:56:186:447:12
7:04
-0:46

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

6:30 /mi

Average Pace

6:44 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:42

14% of race

Time at Steady Pace

1:52:34

64% of race

Time at Slower Pace

39:02

22% of race

Average Pace: 6:43 /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 mi10:23:0320:516:4320:51
6:43
#3758
10K
6.21 mi10:43:2841:166:3820:25
6:34
#3456
15K
9.32 mi11:03:441:01:326:3620:16
6:31
#3212
20K
12.43 mi11:24:081:21:566:3620:24
6:34
#3035
Half
13.11 mi11:28:341:26:226:354:26
6:30
#3011
25K
15.53 mi11:44:281:42:166:3515:54
6:33
#2885
30K
18.64 mi12:05:182:03:066:3620:50
6:42
#2765
20M
20.00 mi12:14:312:12:196:379:13
6:47
#2729
21M
21.00 mi12:21:432:19:316:397:12
7:12
#2706
35K
21.75 mi12:26:402:24:286:394:57
6:37
#2701
23M
23.00 mi12:35:302:33:186:408:50
7:03
#2761
24M
24.00 mi12:42:262:40:146:416:56
6:56
#2823
40K
24.85 mi12:48:362:46:246:426:10
7:13
#2885
25.2M
25.20 mi12:51:182:49:066:432:42
7:50
#2917
Finish
26.22 mi12:58:302:56:186:447:12
7:04
#2999
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3758353235322770(Top 10%)2646(Top 17%)2646(Top 50%)
10K6.21 mi3.10 mi3456+3023264+2683264+2683280(Top 12%)3122(Top 21%)3122(Top 59%)
15K9.32 mi3.11 mi3212+2443058+2063058+2062770(Top 10%)2646(Top 17%)2646(Top 50%)
20K12.43 mi3.11 mi3035+1772897+1612897+1612647(Top 10%)2531(Top 17%)2531(Top 48%)
Half13.11 mi0.68 mi3011+242874+232874+232796(Top 11%)2680(Top 18%)2680(Top 51%)
25K15.53 mi2.42 mi2885+1262757+1172757+1172481(Top 9%)2373(Top 16%)2373(Top 45%)
30K18.64 mi3.11 mi2765+1202643+1142643+1142429(Top 9%)2313(Top 15%)2313(Top 44%)
20M20.00 mi1.36 mi2729+362608+352608+352711(Top 10%)2565(Top 17%)2565(Top 49%)
21M21.00 mi1.00 mi2706+232586+222586+223078(Top 12%)2882(Top 19%)2882(Top 55%)
35K21.75 mi0.75 mi2701+52582+42582+43075(Top 12%)2877(Top 19%)2877(Top 54%)
23M23.00 mi1.25 mi2761-602634-522634-524028(Top 15%)3704(Top 24%)3704(Top 70%)
24M24.00 mi1.00 mi2823-622685-512685-514311(Top 16%)3903(Top 26%)3903(Top 74%)
40K24.85 mi0.85 mi2885-622742-572742-574911(Top 18%)4278(Top 28%)4278(Top 81%)
25.2M25.20 mi0.35 mi2917-322769-272769-275437(Top 20%)4536(Top 30%)4536(Top 86%)
Finish26.22 mi1.02 mi2999-822839-702839-705576(Top 21%)4630(Top 31%)4630(Top 88%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2770

Males

2646

M18-39

2646

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3280

Males

3122

M18-39

3122

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2770

Males

2646

M18-39

2646

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2647

Males

2531

M18-39

2531

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

2796

Males

2680

M18-39

2680

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2481

Males

2373

M18-39

2373

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2429

Males

2313

M18-39

2313

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2711

Males

2565

M18-39

2565

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3078

Males

2882

M18-39

2882

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3075

Males

2877

M18-39

2877

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4028

Males

3704

M18-39

3704

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4311

Males

3903

M18-39

3903

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4911

Males

4278

M18-39

4278

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5437

Males

4536

M18-39

4536

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5576

Males

4630

M18-39

4630

Passing Analysis

Category:
Athletes Passed
1377
Passed By
618
Net Change
+759
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3758
5K → 10K37674+302#3758#3456
10K → 15K26117+244#3456#3212
15K → 20K19518+177#3212#3035
20K → Half295+24#3035#3011
Half → 25K13913+126#3011#2885
25K → 30K14323+120#2885#2765
30K → 20M4812+36#2765#2729
20M → 21M5330+23#2729#2706
21M → 35K2520+5#2706#2701
35K → 23M3494-60#2701#2761
23M → 24M2486-62#2761#2823
24M → 40K2183-62#2823#2885
40K → 25.2M1042-32#2885#2917
25.2M → Finish19101-82#2917#2999
TOTALS1377618+759
📊

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