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BOSTON MARATHON 2023

Xun Su

Bib: 5896•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:49
Rank: #3653
Start → 5K
20:49 | 6:42/mi
10K· 6.21 mi
41:09
Rank: #3318 (+335)
5K → 10K
20:20 | 6:33/mi
15K· 9.32 mi
1:01:30
Rank: #3191 (+127)
10K → 15K
20:21 | 6:33/mi
20K· 12.43 mi
1:21:46
Rank: #2925 (+266)
15K → 20K
20:16 | 6:31/mi
Half· 13.11 mi
1:26:12
Rank: #2913 (+12)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:42:08
Rank: #2822 (+91)
Half → 25K
15:56 | 6:34/mi
30K· 18.64 mi
2:02:53
Rank: #2704 (+118)
25K → 30K
20:45 | 6:41/mi
20M
2:11:56
Rank: #2630 (+74)
30K → 20M
9:03 | 6:40/mi
21M
2:18:54
Rank: #2556 (+74)
20M → 21M
6:58 | 6:58/mi
35K· 21.75 mi
2:23:48
Rank: #2528 (+28)
21M → 35K
4:54 | 6:33/mi
23M
2:32:13
Rank: #2464 (+64)
35K → 23M
8:25 | 6:43/mi
24M
2:38:41
Rank: #2427 (+37)
23M → 24M
6:28 | 6:28/mi
40K· 24.85 mi
2:44:24
Rank: #2403 (+24)
24M → 40K
5:43 | 6:41/mi
25.2M
2:46:51
Rank: #2379 (+24)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:53:29
Rank: #2363 (+16)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:12
Pace6:35 /mi
2nd Half
Distance13.11 mi
Time1:27:17
Pace6:39 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3920:496:4220:49
6:42
-
10K
6.21 mi10:43:5941:096:3720:20
6:33
-0:09
15K
9.32 mi11:04:201:01:306:3620:21
6:33
0:00
20K
12.43 mi11:24:361:21:466:3520:16
6:31
-0:02
Half
13.11 mi11:29:021:26:126:354:26
6:30
-0:01
25K
15.53 mi11:44:581:42:086:3415:56
6:34
+0:04
30K
18.64 mi12:05:432:02:536:3620:45
6:41
+0:07
20M
20.00 mi12:14:462:11:566:369:03
6:40
-0:01
21M
21.00 mi12:21:442:18:546:376:58
6:58
+0:18
35K
21.75 mi12:26:382:23:486:374:54
6:33
-0:25
23M
23.00 mi12:35:032:32:136:378:25
6:43
+0:10
24M
24.00 mi12:41:312:38:416:376:28
6:28
-0:15
40K
24.85 mi12:47:142:44:246:375:43
6:41
+0:13
25.2M
25.20 mi12:49:412:46:516:372:27
7:06
+0:25
Finish
26.22 mi12:56:192:53:296:376:38
6:31
-0:35

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

6:28 /mi

Average Pace

6:37 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:04

95% of race

Time at Steady Pace

9:25

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:23:3920:496:4220:49
6:42
#3653
10K
6.21 mi10:43:5941:096:3720:20
6:33
#3318
15K
9.32 mi11:04:201:01:306:3620:21
6:33
#3191
20K
12.43 mi11:24:361:21:466:3520:16
6:31
#2925
Half
13.11 mi11:29:021:26:126:354:26
6:30
#2913
25K
15.53 mi11:44:581:42:086:3415:56
6:34
#2822
30K
18.64 mi12:05:432:02:536:3620:45
6:41
#2704
20M
20.00 mi12:14:462:11:566:369:03
6:40
#2630
21M
21.00 mi12:21:442:18:546:376:58
6:58
#2556
35K
21.75 mi12:26:382:23:486:374:54
6:33
#2528
23M
23.00 mi12:35:032:32:136:378:25
6:43
#2464
24M
24.00 mi12:41:312:38:416:376:28
6:28
#2427
40K
24.85 mi12:47:142:44:246:375:43
6:41
#2403
25.2M
25.20 mi12:49:412:46:516:372:27
7:06
#2379
Finish
26.22 mi12:56:192:53:296:376:38
6:31
#2363
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3653343734372920(Top 11%)2791(Top 18%)2791(Top 53%)
10K6.21 mi3.10 mi3318+3353142+2953142+2953073(Top 12%)2931(Top 19%)2931(Top 55%)
15K9.32 mi3.11 mi3191+1273037+1053037+1052920(Top 11%)2791(Top 18%)2791(Top 53%)
20K12.43 mi3.11 mi2925+2662795+2422795+2422417(Top 9%)2315(Top 15%)2315(Top 44%)
Half13.11 mi0.68 mi2913+122781+142781+142742(Top 10%)2626(Top 17%)2626(Top 50%)
25K15.53 mi2.42 mi2822+912698+832698+832548(Top 10%)2438(Top 16%)2438(Top 46%)
30K18.64 mi3.11 mi2704+1182584+1142584+1142303(Top 9%)2197(Top 14%)2197(Top 42%)
20M20.00 mi1.36 mi2630+742513+712513+712117(Top 8%)2018(Top 13%)2018(Top 38%)
21M21.00 mi1.00 mi2556+742445+682445+682003(Top 8%)1898(Top 13%)1898(Top 36%)
35K21.75 mi0.75 mi2528+282419+262419+262667(Top 10%)2510(Top 17%)2510(Top 47%)
23M23.00 mi1.25 mi2464+642358+612358+612256(Top 8%)2127(Top 14%)2127(Top 40%)
24M24.00 mi1.00 mi2427+372322+362322+361961(Top 7%)1842(Top 12%)1842(Top 35%)
40K24.85 mi0.85 mi2403+242298+242298+242272(Top 9%)2110(Top 14%)2110(Top 40%)
25.2M25.20 mi0.35 mi2379+242276+222276+222117(Top 8%)1973(Top 13%)1973(Top 37%)
Finish26.22 mi1.02 mi2363+162259+172259+172510(Top 9%)2304(Top 15%)2304(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

2920

Males

2791

M18-39

2791

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3073

Males

2931

M18-39

2931

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

2920

Males

2791

M18-39

2791

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2417

Males

2315

M18-39

2315

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2742

Males

2626

M18-39

2626

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2548

Males

2438

M18-39

2438

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2303

Males

2197

M18-39

2197

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2117

Males

2018

M18-39

2018

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2003

Males

1898

M18-39

1898

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2667

Males

2510

M18-39

2510

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2256

Males

2127

M18-39

2127

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1961

Males

1842

M18-39

1842

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2272

Males

2110

M18-39

2110

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2117

Males

1973

M18-39

1973

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2510

Males

2304

M18-39

2304

Passing Analysis

Category:
Athletes Passed
1519
Passed By
229
Net Change
+1290
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3653
5K → 10K39863+335#3653#3318
10K → 15K16538+127#3318#3191
15K → 20K2759+266#3191#2925
20K → Half219+12#2925#2913
Half → 25K10918+91#2913#2822
25K → 30K13921+118#2822#2704
30K → 20M806+74#2704#2630
20M → 21M817+74#2630#2556
21M → 35K313+28#2556#2528
35K → 23M7410+64#2528#2464
23M → 24M4811+37#2464#2427
24M → 40K3410+24#2427#2403
40K → 25.2M273+24#2403#2379
25.2M → Finish3721+16#2379#2363
TOTALS1519229+1290
📊

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