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BOSTON MARATHON 2025

Xiangshang Kong

Bib: 21451•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M65-69)
#0 / 639
Top 50%
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
8:03/mi
25:01
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
49:54
↑ 79↓ 1380.4%
15K· 9.32 mi
8:13/mi
1:15:27
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:43:15
↑ 106↓ 860.1%
Half· 13.11 mi
9:17/mi
1:49:35
↑ 19↓ 370.5%
25K· 15.53 mi
9:04/mi
2:11:35
↑ 66↓ 880.2%
30K· 18.64 mi
10:42/mi
2:44:50
↑ 181↓ 1480.2%
20M
10:46/mi
2:59:28
↑ 64↓ 500.2%
21M
13:10/mi
3:12:38
↑ 106↓ 241.6%
35K· 21.75 mi
11:04/mi
3:20:55
↑ 17↓ 861.7%
23M
11:42/mi
3:35:34
↑ 23↓ 630.6%
24M
9:39/mi
3:45:13
↓ 821.3%
40K· 24.85 mi
9:31/mi
3:53:21
↓ 200.3%
25.2M
10:38/mi
3:57:01
↑ 13↓ 160.2%
Finish· 26.22 mi
8:56/mi
4:06:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:35
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time2:16:32
Pace10:25 /mi
📊Positive Split: 24.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3825:018:0325:01
8:03
-
10K
6.21 mi11:44:3149:548:0224:53
8:01
-0:02
15K
9.32 mi12:10:041:15:278:0625:33
8:13
+0:12
20K
12.43 mi12:37:521:43:158:1827:48
8:57
+0:44
Half
13.11 mi12:44:121:49:358:226:20
9:17
+0:20
25K
15.53 mi13:06:122:11:358:2822:00
9:04
-0:13
30K
18.64 mi13:39:272:44:508:5133:15
10:42
+1:38
20M
20.00 mi13:54:052:59:288:5814:38
10:46
+0:04
21M
21.00 mi14:07:153:12:389:1013:10
13:10
+2:24
35K
21.75 mi14:15:323:20:559:148:17
11:04
-2:06
23M
23.00 mi14:30:113:35:349:2214:39
11:42
+0:38
24M
24.00 mi14:39:503:45:139:239:39
9:39
-2:03
40K
24.85 mi14:47:583:53:219:238:08
9:31
-0:08
25.2M
25.20 mi14:51:383:57:019:243:40
10:38
+1:07
Finish
26.22 mi15:00:444:06:079:249:06
8:56
-1:42

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

8:01 /mi

Average Pace

9:24 /mi

Slowest Pace

13:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:15:27

31% of race

Time at Steady Pace

1:23:01

34% of race

Time at Slower Pace

1:27:39

36% of race

Average Pace: 9:23 /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 mi11:19:3825:018:0325:01
8:03
#17011
10K
6.21 mi11:44:3149:548:0224:53
8:01
#16760
15K
9.32 mi12:10:041:15:278:0625:33
8:13
#17036
20K
12.43 mi12:37:521:43:158:1827:48
8:57
#18045
Half
13.11 mi12:44:121:49:358:226:20
9:17
#18360
25K
15.53 mi13:06:122:11:358:2822:00
9:04
#18734
30K
18.64 mi13:39:272:44:508:5133:15
10:42
#20097
20M
20.00 mi13:54:052:59:288:5814:38
10:46
#20431
21M
21.00 mi14:07:153:12:389:1013:10
13:10
#20988
35K
21.75 mi14:15:323:20:559:148:17
11:04
#21196
23M
23.00 mi14:30:113:35:349:2214:39
11:42
#21519
24M
24.00 mi14:39:503:45:139:239:39
9:39
#21445
40K
24.85 mi14:47:583:53:219:238:08
9:31
#21337
25.2M
25.20 mi14:51:383:57:019:243:40
10:38
#21302
Finish
26.22 mi15:00:444:06:079:249:06
8:56
#21206
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi17011112201122017543(Top 62%)11454(Top 71%)11454(Top 1792%)
10K6.21 mi3.10 mi16760+25111122+9811122+9816551(Top 58%)11054(Top 69%)11054(Top 1730%)
15K9.32 mi3.11 mi17036-27611249-12711249-12717543(Top 62%)11454(Top 71%)11454(Top 1792%)
20K12.43 mi3.11 mi18045-100911639-39011639-39020704(Top 73%)12756(Top 79%)12756(Top 1996%)
Half13.11 mi0.68 mi18360-31511761-12211761-12222868(Top 81%)13727(Top 85%)13727(Top 2148%)
25K15.53 mi2.42 mi18734-37411918-15711918-15720237(Top 71%)12517(Top 78%)12517(Top 1959%)
30K18.64 mi3.11 mi20097-136312461-54312461-54323396(Top 82%)13785(Top 86%)13785(Top 2157%)
20M20.00 mi1.36 mi20431-33412578-11712578-11723098(Top 81%)13570(Top 84%)13570(Top 2124%)
21M21.00 mi1.00 mi20988-55712820-24212820-24225264(Top 89%)14494(Top 90%)14494(Top 2268%)
35K21.75 mi0.75 mi21196-20812900-8012900-8024347(Top 86%)14033(Top 87%)14033(Top 2196%)
23M23.00 mi1.25 mi21519-32313018-11813018-11824599(Top 87%)14140(Top 88%)14140(Top 2213%)
24M24.00 mi1.00 mi21445+7412970+4812970+4820188(Top 71%)11960(Top 74%)11960(Top 1872%)
40K24.85 mi0.85 mi21337+10812899+7112899+7118752(Top 66%)11209(Top 70%)11209(Top 1754%)
25.2M25.20 mi0.35 mi21302+3512872+2712872+2719475(Top 69%)11549(Top 72%)11549(Top 1807%)
Finish26.22 mi1.02 mi21206+9612813+5912813+5918670(Top 66%)11214(Top 70%)11214(Top 1755%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17543

Males

11454

M65-69

11454

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16551

Males

11054

M65-69

11054

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17543

Males

11454

M65-69

11454

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20704

Males

12756

M65-69

12756

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

22868

Males

13727

M65-69

13727

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

20237

Males

12517

M65-69

12517

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

23396

Males

13785

M65-69

13785

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

23098

Males

13570

M65-69

13570

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

25264

Males

14494

M65-69

14494

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

24347

Males

14033

M65-69

14033

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

24599

Males

14140

M65-69

14140

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20188

Males

11960

M65-69

11960

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18752

Males

11209

M65-69

11209

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19475

Males

11549

M65-69

11549

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18670

Males

11214

M65-69

11214

Passing Analysis

Category:
Athletes Passed
1171
Passed By
5366
Net Change
-4195
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17011
5K → 10K432181+251#17011#16760
10K → 15K128404-276#16760#17036
15K → 20K351044-1009#17036#18045
20K → Half4319-315#18045#18360
Half → 25K80454-374#18360#18734
25K → 30K261389-1363#18734#20097
30K → 20M33367-334#20097#20431
20M → 21M14571-557#20431#20988
21M → 35K22230-208#20988#21196
35K → 23M33356-323#21196#21519
23M → 24M9521+74#21519#21445
24M → 40K1168+108#21445#21337
40K → 25.2M449+35#21337#21302
25.2M → Finish10913+96#21302#21206
TOTALS11715366-4195
📊

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