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BOSTON MARATHON 2023

Xuefeng Song

Bib: 20639•M

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0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:53
Rank: #18582
Start → 5K
8:39/mi
26:53 split
10K· 6.21 mi
54:18
Rank: #19343 (-761)
5K → 10K
8:49/mi
27:25 split
15K· 9.32 mi
1:23:15
Rank: #20265 (-922)
10K → 15K
9:19/mi
28:57 split
20K· 12.43 mi
1:52:16
Rank: #20505 (-240)
15K → 20K
9:20/mi
29:01 split
Half· 13.11 mi
1:58:32
Rank: #20541 (-36)
20K → Half
9:11/mi
6:16 split
25K· 15.53 mi
2:22:32
Rank: #20852 (-311)
Half → 25K
9:54/mi
24:00 split
30K· 18.64 mi
2:54:54
Rank: #21118 (-266)
25K → 30K
10:25/mi
32:22 split
20M
3:09:24
Rank: #21186 (-68)
30K → 20M
10:40/mi
14:30 split
21M
3:21:40
Rank: #21356 (-170)
20M → 21M
12:16/mi
12:16 split
35K· 21.75 mi
3:30:14
Rank: #21496 (-140)
21M → 35K
11:27/mi
8:34 split
23M
3:45:58
Rank: #21820 (-324)
35K → 23M
12:34/mi
15:44 split
24M
3:57:56
Rank: #21977 (-157)
23M → 24M
11:58/mi
11:58 split
40K· 24.85 mi
4:07:22
Rank: #21990 (-13)
24M → 40K
11:02/mi
9:26 split
25.2M
4:12:01
Rank: #22052 (-62)
40K → 25.2M
13:29/mi
4:39 split
Finish· 26.22 mi
4:22:00
Rank: #22012 (+40)
25.2M → Finish
9:48/mi
9:59 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:32
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:23:28
Pace10:57 /mi
📊Positive Split: 21.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:3426:538:3926:53
8:39
-
10K
6.21 mi11:51:5954:188:4427:25
8:49
+0:10
15K
9.32 mi12:20:561:23:158:5628:57
9:19
+0:30
20K
12.43 mi12:49:571:52:169:0229:01
9:20
+0:01
Half
13.11 mi12:56:131:58:329:026:16
9:11
-0:09
25K
15.53 mi13:20:132:22:329:1124:00
9:54
+0:43
30K
18.64 mi13:52:352:54:549:2332:22
10:25
+0:31
20M
20.00 mi14:07:053:09:249:2814:30
10:40
+0:15
21M
21.00 mi14:19:213:21:409:3612:16
12:16
+1:36
35K
21.75 mi14:27:553:30:149:408:34
11:27
-0:49
23M
23.00 mi14:43:393:45:589:4915:44
12:34
+1:07
24M
24.00 mi14:55:373:57:569:5511:58
11:58
-0:36
40K
24.85 mi15:05:034:07:229:579:26
11:02
-0:56
25.2M
25.20 mi15:09:424:12:0110:004:39
13:29
+2:27
Finish
26.22 mi15:19:414:22:0010:009:59
9:48
-3:41

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

8:39 /mi

Average Pace

10:00 /mi

Slowest Pace

13:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:32

45% of race

Time at Steady Pace

1:30:17

34% of race

Time at Slower Pace

53:11

20% of race

Average Pace: 10:00 /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 mi11:24:3426:538:3926:53
8:39
#18582
10K
6.21 mi11:51:5954:188:4427:25
8:49
#19343
15K
9.32 mi12:20:561:23:158:5628:57
9:19
#20265
20K
12.43 mi12:49:571:52:169:0229:01
9:20
#20505
Half
13.11 mi12:56:131:58:329:026:16
9:11
#20541
25K
15.53 mi13:20:132:22:329:1124:00
9:54
#20852
30K
18.64 mi13:52:352:54:549:2332:22
10:25
#21118
20M
20.00 mi14:07:053:09:249:2814:30
10:40
#21186
21M
21.00 mi14:19:213:21:409:3612:16
12:16
#21356
35K
21.75 mi14:27:553:30:149:408:34
11:27
#21496
23M
23.00 mi14:43:393:45:589:4915:44
12:34
#21820
24M
24.00 mi14:55:373:57:569:5511:58
11:58
#21977
40K
24.85 mi15:05:034:07:229:579:26
11:02
#21990
25.2M
25.20 mi15:09:424:12:0110:004:39
13:29
#22052
Finish
26.22 mi15:19:414:22:0010:009:59
9:48
#22012
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18582116431164321698(Top 82%)13062(Top 86%)13062(Top 1177%)
10K6.21 mi3.10 mi19343-76111960-31711960-31720059(Top 75%)12310(Top 81%)12310(Top 1109%)
15K9.32 mi3.11 mi20265-92212356-39612356-39621698(Top 82%)13062(Top 86%)13062(Top 1177%)
20K12.43 mi3.11 mi20505-24012486-13012486-13021067(Top 79%)12773(Top 84%)12773(Top 1151%)
Half13.11 mi0.68 mi20541-3612506-2012506-2021101(Top 79%)12780(Top 84%)12780(Top 1151%)
25K15.53 mi2.42 mi20852-31112652-14612652-14621981(Top 83%)13130(Top 87%)13130(Top 1183%)
30K18.64 mi3.11 mi21118-26612752-10012752-10022038(Top 83%)13085(Top 86%)13085(Top 1179%)
20M20.00 mi1.36 mi21186-6812757-512757-522081(Top 83%)13030(Top 86%)13030(Top 1174%)
21M21.00 mi1.00 mi21356-17012830-7312830-7323140(Top 87%)13500(Top 89%)13500(Top 1216%)
35K21.75 mi0.75 mi21496-14012889-5912889-5924020(Top 90%)13858(Top 91%)13858(Top 1248%)
23M23.00 mi1.25 mi21820-32413025-13613025-13624645(Top 93%)14161(Top 93%)14161(Top 1276%)
24M24.00 mi1.00 mi21977-15713090-6513090-6524469(Top 92%)14029(Top 92%)14029(Top 1264%)
40K24.85 mi0.85 mi21990-1313088+213088+222421(Top 84%)13043(Top 86%)13043(Top 1175%)
25.2M25.20 mi0.35 mi22052-6213110-2213110-2224486(Top 92%)14031(Top 92%)14031(Top 1264%)
Finish26.22 mi1.02 mi22012+4013081+2913081+2921134(Top 79%)12488(Top 82%)12488(Top 1125%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

21698

Males

13062

M60-64

13062

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

20059

Males

12310

M60-64

12310

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

21698

Males

13062

M60-64

13062

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

21067

Males

12773

M60-64

12773

20K→Half

12.4 - 13.1 mi

Top 79%
×2stories
+19ft-37ft

Overall

21101

Males

12780

M60-64

12780

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

21981

Males

13130

M60-64

13130

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

22038

Males

13085

M60-64

13085

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

22081

Males

13030

M60-64

13030

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

23140

Males

13500

M60-64

13500

21M→35K

21.0 - 21.8 mi

Top 90%
×7stories
+17ft-86ft

Overall

24020

Males

13858

M60-64

13858

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24645

Males

14161

M60-64

14161

23M→24M

23.0 - 24.0 mi

Top 92%
×6stories
+12ft-82ft

Overall

24469

Males

14029

M60-64

14029

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

22421

Males

13043

M60-64

13043

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24486

Males

14031

M60-64

14031

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

21134

Males

12488

M60-64

12488

Passing Analysis

Category:
Athletes Passed
537
Passed By
3967
Net Change
-3430
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18582
5K → 10K101862-761#18582#19343
10K → 15K23945-922#19343#20265
15K → 20K97337-240#20265#20505
20K → Half2258-36#20505#20541
Half → 25K29340-311#20541#20852
25K → 30K73339-266#20852#21118
30K → 20M49117-68#21118#21186
20M → 21M23193-170#21186#21356
21M → 35K9149-140#21356#21496
35K → 23M15339-324#21496#21820
23M → 24M5162-157#21820#21977
24M → 40K3144-13#21977#21990
40K → 25.2M668-62#21990#22052
25.2M → Finish5414+40#22052#22012
TOTALS5373967-3430
📊

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