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BOSTON MARATHON 2025

Miao Xu

Bib: 13704•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
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
7:50/mi
24:19
↑ 97↓ 3451.5%
10K· 6.21 mi
8:03/mi
49:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:15:46
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:43:12
↑ 106↓ 860.1%
Half· 13.11 mi
8:55/mi
1:49:17
↑ 19↓ 370.5%
25K· 15.53 mi
9:37/mi
2:12:35
↑ 66↓ 880.2%
30K· 18.64 mi
10:34/mi
2:45:24
↑ 181↓ 1480.2%
20M
10:33/mi
2:59:44
↑ 64↓ 500.2%
21M
12:51/mi
3:12:35
↑ 106↓ 241.6%
35K· 21.75 mi
11:22/mi
3:21:05
↑ 17↓ 861.7%
23M
10:32/mi
3:34:16
↑ 23↓ 630.6%
24M
10:21/mi
3:44:37
↓ 821.3%
40K· 24.85 mi
10:19/mi
3:53:26
↓ 200.3%
25.2M
12:48/mi
3:57:51
↑ 13↓ 160.2%
Finish· 26.22 mi
9:35/mi
4:07:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:17
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time2:18:20
Pace10:33 /mi
📊Positive Split: 26.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:0724:197:5024:19
7:50
-
10K
6.21 mi11:18:0749:197:5625:00
8:03
+0:13
15K
9.32 mi11:44:341:15:468:0826:27
8:31
+0:28
20K
12.43 mi12:12:001:43:128:1827:26
8:50
+0:19
Half
13.11 mi12:18:051:49:178:206:05
8:55
+0:05
25K
15.53 mi12:41:232:12:358:3223:18
9:37
+0:42
30K
18.64 mi13:14:122:45:248:5232:49
10:34
+0:57
20M
20.00 mi13:28:322:59:448:5914:20
10:33
-0:01
21M
21.00 mi13:41:233:12:359:1012:51
12:51
+2:18
35K
21.75 mi13:49:533:21:059:158:30
11:22
-1:29
23M
23.00 mi14:03:043:34:169:1913:11
10:32
-0:50
24M
24.00 mi14:13:253:44:379:2210:21
10:21
-0:11
40K
24.85 mi14:22:143:53:269:248:49
10:19
-0:02
25.2M
25.20 mi14:26:393:57:519:264:25
12:48
+2:29
Finish
26.22 mi14:36:254:07:379:279:46
9:35
-3:13

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

7:50 /mi

Average Pace

9:27 /mi

Slowest Pace

12:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:17

44% of race

Time at Steady Pace

1:52:34

45% of race

Time at Slower Pace

25:46

10% of race

Average Pace: 9:27 /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 mi10:53:0724:197:5024:19
7:50
#15052
10K
6.21 mi11:18:0749:197:5625:00
8:03
#15980
15K
9.32 mi11:44:341:15:468:0826:27
8:31
#17282
20K
12.43 mi12:12:001:43:128:1827:26
8:50
#18024
Half
13.11 mi12:18:051:49:178:206:05
8:55
#18208
25K
15.53 mi12:41:232:12:358:3223:18
9:37
#19128
30K
18.64 mi13:14:122:45:248:5232:49
10:34
#20257
20M
20.00 mi13:28:322:59:448:5914:20
10:33
#20489
21M
21.00 mi13:41:233:12:359:1012:51
12:51
#20979
35K
21.75 mi13:49:533:21:059:158:30
11:22
#21234
23M
23.00 mi14:03:043:34:169:1913:11
10:32
#21290
24M
24.00 mi14:13:253:44:379:2210:21
10:21
#21357
40K
24.85 mi14:22:143:53:269:248:49
10:19
#21351
25.2M
25.20 mi14:26:393:57:519:264:25
12:48
#21422
Finish
26.22 mi14:36:254:07:379:279:46
9:35
#21420
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi15052104521045219404(Top 68%)12229(Top 76%)12229(Top 613%)
10K6.21 mi3.10 mi15980-92810814-36210814-36216816(Top 59%)11174(Top 69%)11174(Top 560%)
15K9.32 mi3.11 mi17282-130211349-53511349-53519404(Top 68%)12229(Top 76%)12229(Top 613%)
20K12.43 mi3.11 mi18024-74211629-28011629-28020098(Top 71%)12511(Top 78%)12511(Top 627%)
Half13.11 mi0.68 mi18208-18411694-6511694-6521454(Top 76%)13110(Top 81%)13110(Top 657%)
25K15.53 mi2.42 mi19128-92012087-39312087-39322210(Top 78%)13385(Top 83%)13385(Top 671%)
30K18.64 mi3.11 mi20257-112912524-43712524-43723073(Top 81%)13651(Top 85%)13651(Top 684%)
20M20.00 mi1.36 mi20489-23212609-8512609-8522557(Top 79%)13309(Top 83%)13309(Top 667%)
21M21.00 mi1.00 mi20979-49012814-20512814-20524858(Top 88%)14295(Top 89%)14295(Top 716%)
35K21.75 mi0.75 mi21234-25512918-10412918-10424862(Top 88%)14282(Top 89%)14282(Top 716%)
23M23.00 mi1.25 mi21290-56129181291822088(Top 78%)12922(Top 80%)12922(Top 647%)
24M24.00 mi1.00 mi21357-6712929-1112929-1122389(Top 79%)12999(Top 81%)12999(Top 651%)
40K24.85 mi0.85 mi21351+612905+2412905+2421401(Top 75%)12473(Top 77%)12473(Top 625%)
25.2M25.20 mi0.35 mi21422-7112922-1712922-1724737(Top 87%)14129(Top 88%)14129(Top 708%)
Finish26.22 mi1.02 mi21420+212907+1512907+1521479(Top 76%)12526(Top 78%)12526(Top 628%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19404

Males

12229

M50-54

12229

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16816

Males

11174

M50-54

11174

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19404

Males

12229

M50-54

12229

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

20098

Males

12511

M50-54

12511

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

21454

Males

13110

M50-54

13110

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22210

Males

13385

M50-54

13385

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

23073

Males

13651

M50-54

13651

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

22557

Males

13309

M50-54

13309

20M→21M

20.0 - 21.0 mi

Top 88%
×8story building
+106ft-24ft

Overall

24858

Males

14295

M50-54

14295

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

24862

Males

14282

M50-54

14282

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

22088

Males

12922

M50-54

12922

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22389

Males

12999

M50-54

12999

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

21401

Males

12473

M50-54

12473

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24737

Males

14129

M50-54

14129

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21479

Males

12526

M50-54

12526

Passing Analysis

Category:
Athletes Passed
541
Passed By
6909
Net Change
-6368
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15052
5K → 10K821010-928#15052#15980
10K → 15K271329-1302#15980#17282
15K → 20K51793-742#17282#18024
20K → Half11195-184#18024#18208
Half → 25K27947-920#18208#19128
25K → 30K361165-1129#19128#20257
30K → 20M50282-232#20257#20489
20M → 21M17507-490#20489#20979
21M → 35K16271-255#20979#21234
35K → 23M76132-56#21234#21290
23M → 24M2895-67#21290#21357
24M → 40K5953+6#21357#21351
40K → 25.2M1081-71#21351#21422
25.2M → Finish5149+2#21422#21420
TOTALS5416909-6368
📊

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