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BOSTON MARATHON 2025

Qun Xiao

Bib: 14934•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 48%
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:20
Rank: #12339
Start → 5K
23:20 | 7:31/mi
10K· 6.21 mi
46:46
Rank: #12359 (-20)
5K → 10K
23:26 | 7:33/mi
15K· 9.32 mi
1:10:16
Rank: #12316 (+43)
10K → 15K
23:30 | 7:34/mi
20K· 12.43 mi
1:34:24
Rank: #12458 (-142)
15K → 20K
24:08 | 7:46/mi
Half· 13.11 mi
1:39:41
Rank: #12528 (-70)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
1:59:18
Rank: #12846 (-318)
Half → 25K
19:37 | 8:05/mi
30K· 18.64 mi
2:25:28
Rank: #13118 (-272)
25K → 30K
26:10 | 8:25/mi
20M
2:36:57
Rank: #13101 (+17)
30K → 20M
11:29 | 8:27/mi
21M
2:45:46
Rank: #13031 (+70)
20M → 21M
8:49 | 8:49/mi
35K· 21.75 mi
2:51:55
Rank: #13050 (-19)
21M → 35K
6:09 | 8:13/mi
23M
3:02:24
Rank: #13007 (+43)
35K → 23M
10:29 | 8:22/mi
24M
3:10:33
Rank: #12964 (+43)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:17:39
Rank: #12916 (+48)
24M → 40K
7:06 | 8:18/mi
25.2M
3:20:46
Rank: #12892 (+24)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:28:57
Rank: #12888 (+4)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:41
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:49:16
Pace8:20 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0123:207:3123:20
7:31
-
10K
6.21 mi11:16:2746:467:3223:26
7:33
+0:02
15K
9.32 mi11:39:571:10:167:3223:30
7:34
+0:01
20K
12.43 mi12:04:051:34:247:3624:08
7:46
+0:12
Half
13.11 mi12:09:221:39:417:365:17
7:45
-0:01
25K
15.53 mi12:28:591:59:187:4119:37
8:05
+0:20
30K
18.64 mi12:55:092:25:287:4826:10
8:25
+0:20
20M
20.00 mi13:06:382:36:577:5111:29
8:27
+0:02
21M
21.00 mi13:15:272:45:467:548:49
8:49
+0:22
35K
21.75 mi13:21:362:51:557:546:09
8:13
-0:36
23M
23.00 mi13:32:053:02:247:5610:29
8:22
+0:09
24M
24.00 mi13:40:143:10:337:568:09
8:09
-0:13
40K
24.85 mi13:47:203:17:397:577:06
8:18
+0:09
25.2M
25.20 mi13:50:273:20:467:583:07
9:02
+0:44
Finish
26.22 mi13:58:383:28:577:598:11
8:02
-1:00

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

7:31 /mi

Average Pace

7:59 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:41

48% of race

Time at Steady Pace

59:41

29% of race

Time at Slower Pace

49:35

24% of race

Average Pace: 7:58 /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 mi10:53:0123:207:3123:20
7:31
#12339
10K
6.21 mi11:16:2746:467:3223:26
7:33
#12359
15K
9.32 mi11:39:571:10:167:3223:30
7:34
#12316
20K
12.43 mi12:04:051:34:247:3624:08
7:46
#12458
Half
13.11 mi12:09:221:39:417:365:17
7:45
#12528
25K
15.53 mi12:28:591:59:187:4119:37
8:05
#12846
30K
18.64 mi12:55:092:25:287:4826:10
8:25
#13118
20M
20.00 mi13:06:382:36:577:5111:29
8:27
#13101
21M
21.00 mi13:15:272:45:467:548:49
8:49
#13031
35K
21.75 mi13:21:362:51:557:546:09
8:13
#13050
23M
23.00 mi13:32:053:02:247:5610:29
8:22
#13007
24M
24.00 mi13:40:143:10:337:568:09
8:09
#12964
40K
24.85 mi13:47:203:17:397:577:06
8:18
#12916
25.2M
25.20 mi13:50:273:20:467:583:07
9:02
#12892
Finish
26.22 mi13:58:383:28:577:598:11
8:02
#12888
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi123399326932612289(Top 43%)9197(Top 57%)9197(Top 461%)
10K6.21 mi3.10 mi12359-209331-59331-512481(Top 44%)9366(Top 58%)9366(Top 469%)
15K9.32 mi3.11 mi12316+439271+609271+6012289(Top 43%)9197(Top 57%)9197(Top 461%)
20K12.43 mi3.11 mi12458-1429300-299300-2912999(Top 46%)9414(Top 58%)9414(Top 472%)
Half13.11 mi0.68 mi12528-709329-299329-2913714(Top 48%)9763(Top 61%)9763(Top 489%)
25K15.53 mi2.42 mi12846-3189425-969425-9614557(Top 51%)9997(Top 62%)9997(Top 501%)
30K18.64 mi3.11 mi13118-2729459-349459-3414260(Top 50%)9708(Top 60%)9708(Top 486%)
20M20.00 mi1.36 mi13101+179429+309429+3013449(Top 47%)9186(Top 57%)9186(Top 460%)
21M21.00 mi1.00 mi13031+709372+579372+5712379(Top 44%)8552(Top 53%)8552(Top 428%)
35K21.75 mi0.75 mi13050-199364+89364+813722(Top 48%)9145(Top 57%)9145(Top 458%)
23M23.00 mi1.25 mi13007+439302+629302+6212488(Top 44%)8466(Top 53%)8466(Top 424%)
24M24.00 mi1.00 mi12964+439244+589244+5812230(Top 43%)8286(Top 51%)8286(Top 415%)
40K24.85 mi0.85 mi12916+489192+529192+5212150(Top 43%)8128(Top 50%)8128(Top 407%)
25.2M25.20 mi0.35 mi12892+249175+179175+1711970(Top 42%)7981(Top 50%)7981(Top 400%)
Finish26.22 mi1.02 mi12888+49154+219154+2113060(Top 46%)8561(Top 53%)8561(Top 429%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

12289

Males

9197

M50-54

9197

5K→10K

3.1 - 6.2 mi

Top 44%
×5stories
+79ft-138ft

Overall

12481

Males

9366

M50-54

9366

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

12289

Males

9197

M50-54

9197

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12999

Males

9414

M50-54

9414

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

13714

Males

9763

M50-54

9763

Half→25K

13.1 - 15.5 mi

Top 51%
×4stories
+66ft-88ft

Overall

14557

Males

9997

M50-54

9997

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

14260

Males

9708

M50-54

9708

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

13449

Males

9186

M50-54

9186

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12379

Males

8552

M50-54

8552

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

13722

Males

9145

M50-54

9145

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12488

Males

8466

M50-54

8466

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12230

Males

8286

M50-54

8286

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12150

Males

8128

M50-54

8128

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11970

Males

7981

M50-54

7981

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

13060

Males

8561

M50-54

8561

Passing Analysis

Category:
Athletes Passed
1613
Passed By
2162
Net Change
-549
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12339
5K → 10K252272-20#12339#12359
10K → 15K202159+43#12359#12316
15K → 20K145287-142#12316#12458
20K → Half1282-70#12458#12528
Half → 25K91409-318#12528#12846
25K → 30K167439-272#12846#13118
30K → 20M119102+17#13118#13101
20M → 21M13868+70#13101#13031
21M → 35K4463-19#13031#13050
35K → 23M13289+43#13050#13007
23M → 24M9855+43#13007#12964
24M → 40K8840+48#12964#12916
40K → 25.2M4420+24#12916#12892
25.2M → Finish8177+4#12892#12888
TOTALS16132162-549
📊

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