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BOSTON MARATHON 2023

Po Chang Chen

Bib: 3651•M

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

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
8:09/mi
25:18
↑ 97↓ 3451.5%
10K· 6.21 mi
9:06/mi
53:35
↑ 79↓ 1380.4%
15K· 9.32 mi
9:25/mi
1:22:51
↑ 67↓ 78
20K· 12.43 mi
10:39/mi
1:55:56
↑ 106↓ 860.1%
Half· 13.11 mi
10:46/mi
2:03:17
↑ 19↓ 370.5%
25K· 15.53 mi
11:07/mi
2:30:13
↑ 66↓ 880.2%
30K· 18.64 mi
12:28/mi
3:08:57
↑ 181↓ 1480.2%
20M
12:33/mi
3:26:00
↑ 64↓ 500.2%
21M
13:39/mi
3:39:39
↑ 106↓ 241.6%
35K· 21.75 mi
12:03/mi
3:48:40
↑ 17↓ 861.7%
23M
12:37/mi
4:04:28
↑ 23↓ 630.6%
24M
12:09/mi
4:16:37
↓ 821.3%
40K· 24.85 mi
13:13/mi
4:27:55
↓ 200.3%
25.2M
13:26/mi
4:32:33
↑ 13↓ 160.2%
Finish· 26.22 mi
11:23/mi
4:44:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:17
Pace9:24 /mi
2nd Half
Distance13.11 mi
Time2:40:52
Pace12:16 /mi
📊Positive Split: 30.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:3325:188:0925:18
8:09
-
10K
6.21 mi10:54:5053:358:3728:17
9:06
+0:57
15K
9.32 mi11:24:061:22:518:5329:16
9:25
+0:19
20K
12.43 mi11:57:111:55:569:2033:05
10:39
+1:14
Half
13.11 mi12:04:322:03:179:247:21
10:46
+0:07
25K
15.53 mi12:31:282:30:139:4026:56
11:07
+0:21
30K
18.64 mi13:10:123:08:5710:0838:44
12:28
+1:21
20M
20.00 mi13:27:153:26:0010:1817:03
12:33
+0:05
21M
21.00 mi13:40:543:39:3910:2813:39
13:39
+1:06
35K
21.75 mi13:49:553:48:4010:319:01
12:03
-1:36
23M
23.00 mi14:05:434:04:2810:3815:48
12:37
+0:34
24M
24.00 mi14:17:524:16:3710:4212:09
12:09
-0:28
40K
24.85 mi14:29:104:27:5510:4711:18
13:13
+1:04
25.2M
25.20 mi14:33:484:32:3310:494:38
13:26
+0:13
Finish
26.22 mi14:45:244:44:0910:5111:36
11:23
-2:03

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

8:09 /mi

Average Pace

10:51 /mi

Slowest Pace

13:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:13

53% of race

Time at Steady Pace

1:44:21

37% of race

Time at Slower Pace

29:35

10% of race

Average Pace: 10:50 /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 mi10:26:3325:188:0925:18
8:09
#15026
10K
6.21 mi10:54:5053:358:3728:17
9:06
#18648
15K
9.32 mi11:24:061:22:518:5329:16
9:25
#20069
20K
12.43 mi11:57:111:55:569:2033:05
10:39
#21605
Half
13.11 mi12:04:322:03:179:247:21
10:46
#21815
25K
15.53 mi12:31:282:30:139:4026:56
11:07
#22398
30K
18.64 mi13:10:123:08:5710:0838:44
12:28
#23123
20M
20.00 mi13:27:153:26:0010:1817:03
12:33
#23286
21M
21.00 mi13:40:543:39:3910:2813:39
13:39
#23406
35K
21.75 mi13:49:553:48:4010:319:01
12:03
#23475
23M
23.00 mi14:05:434:04:2810:3815:48
12:37
#23589
24M
24.00 mi14:17:524:16:3710:4212:09
12:09
#23666
40K
24.85 mi14:29:104:27:5510:4711:18
13:13
#23766
25.2M
25.20 mi14:33:484:32:3310:494:38
13:26
#23788
Finish
26.22 mi14:45:244:44:0910:5111:36
11:23
#23821
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi15026103551035522021(Top 83%)13202(Top 87%)13202(Top 250%)
10K6.21 mi3.10 mi18648-362211718-136311718-136321285(Top 80%)12833(Top 85%)12833(Top 243%)
15K9.32 mi3.11 mi20069-142112271-55312271-55322021(Top 83%)13202(Top 87%)13202(Top 250%)
20K12.43 mi3.11 mi21605-153612973-70212973-70224095(Top 91%)14106(Top 93%)14106(Top 267%)
Half13.11 mi0.68 mi21815-21013074-10113074-10124619(Top 92%)14320(Top 94%)14320(Top 271%)
25K15.53 mi2.42 mi22398-58313326-25213326-25224139(Top 91%)14091(Top 93%)14091(Top 267%)
30K18.64 mi3.11 mi23123-72513655-32913655-32924961(Top 94%)14391(Top 95%)14391(Top 272%)
20M20.00 mi1.36 mi23286-16313718-6313718-6324793(Top 93%)14274(Top 94%)14274(Top 270%)
21M21.00 mi1.00 mi23406-12013773-5513773-5524722(Top 93%)14233(Top 94%)14233(Top 269%)
35K21.75 mi0.75 mi23475-6913799-2613799-2624724(Top 93%)14185(Top 93%)14185(Top 268%)
23M23.00 mi1.25 mi23589-11413848-4913848-4924711(Top 93%)14194(Top 94%)14194(Top 269%)
24M24.00 mi1.00 mi23666-7713865-1713865-1724698(Top 93%)14146(Top 93%)14146(Top 268%)
40K24.85 mi0.85 mi23766-10013904-3913904-3925115(Top 94%)14355(Top 95%)14355(Top 272%)
25.2M25.20 mi0.35 mi23788-2213911-713911-724449(Top 92%)14023(Top 92%)14023(Top 265%)
Finish26.22 mi1.02 mi23821-3313921-1013921-1024529(Top 92%)14087(Top 93%)14087(Top 267%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

22021

Males

13202

M18-39

13202

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21285

Males

12833

M18-39

12833

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

22021

Males

13202

M18-39

13202

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24095

Males

14106

M18-39

14106

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

24619

Males

14320

M18-39

14320

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

24139

Males

14091

M18-39

14091

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

24961

Males

14391

M18-39

14391

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

24793

Males

14274

M18-39

14274

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

24722

Males

14233

M18-39

14233

21M→35K

21.0 - 21.8 mi

Top 93%
×7story building
+17ft-86ft

Overall

24724

Males

14185

M18-39

14185

35K→23M

21.8 - 23.0 mi

Top 93%
×5story building
+23ft-63ft

Overall

24711

Males

14194

M18-39

14194

23M→24M

23.0 - 24.0 mi

Top 93%
×6story building
+12ft-82ft

Overall

24698

Males

14146

M18-39

14146

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

25115

Males

14355

M18-39

14355

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24449

Males

14023

M18-39

14023

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24529

Males

14087

M18-39

14087

Passing Analysis

Category:
Athletes Passed
141
Passed By
8936
Net Change
-8795
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15026
5K → 10K53627-3622#15026#18648
10K → 15K91430-1421#18648#20069
15K → 20K81544-1536#20069#21605
20K → Half3213-210#21605#21815
Half → 25K15598-583#21815#22398
25K → 30K9734-725#22398#23123
30K → 20M22185-163#23123#23286
20M → 21M9129-120#23286#23406
21M → 35K1281-69#23406#23475
35K → 23M12126-114#23475#23589
23M → 24M1693-77#23589#23666
24M → 40K8108-100#23666#23766
40K → 25.2M426-22#23766#23788
25.2M → Finish942-33#23788#23821
TOTALS1418936-8795
📊

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