Boston Marathon logo
BOSTON MARATHON 2025

Xiwu Lin

Bib: 14150•M

PA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 38%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 40%
Division (M50-54)
#0 / 1996
Top 42%
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
7:09/mi
22:13
↑ 97↓ 3451.5%
10K· 6.21 mi
7:23/mi
45:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:07:58
↑ 67↓ 78
20K· 12.43 mi
7:29/mi
1:31:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:36:14
↑ 19↓ 370.5%
25K· 15.53 mi
7:33/mi
1:54:33
↑ 66↓ 880.2%
30K· 18.64 mi
7:53/mi
2:19:02
↑ 181↓ 1480.2%
20M
8:05/mi
2:30:01
↑ 64↓ 500.2%
21M
8:48/mi
2:38:49
↑ 106↓ 241.6%
35K· 21.75 mi
7:36/mi
2:44:30
↑ 17↓ 861.7%
23M
8:13/mi
2:54:47
↑ 23↓ 630.6%
24M
8:01/mi
3:02:48
↓ 821.3%
40K· 24.85 mi
8:29/mi
3:10:03
↓ 200.3%
25.2M
9:17/mi
3:13:15
↑ 13↓ 160.2%
Finish· 26.22 mi
8:27/mi
3:21:52
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:14
Pace7:20 /mi
2nd Half
Distance13.11 mi
Time1:45:38
Pace8:03 /mi
📊Positive Split: 9.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:0522:137:0922:13
7:09
-
10K
6.21 mi11:15:0145:097:1622:56
7:23
+0:14
15K
9.32 mi11:37:501:07:587:1822:49
7:21
-0:02
20K
12.43 mi12:01:051:31:137:2023:15
7:29
+0:08
Half
13.11 mi12:06:061:36:147:205:01
7:21
-0:08
25K
15.53 mi12:24:251:54:337:2218:19
7:33
+0:12
30K
18.64 mi12:48:542:19:027:2824:29
7:53
+0:20
20M
20.00 mi12:59:532:30:017:3010:59
8:05
+0:12
21M
21.00 mi13:08:412:38:497:348:48
8:48
+0:43
35K
21.75 mi13:14:222:44:307:345:41
7:36
-1:12
23M
23.00 mi13:24:392:54:477:3610:17
8:13
+0:37
24M
24.00 mi13:32:403:02:487:378:01
8:01
-0:12
40K
24.85 mi13:39:553:10:037:397:15
8:29
+0:28
25.2M
25.20 mi13:43:073:13:157:403:12
9:17
+0:48
Finish
26.22 mi13:51:443:21:527:428:37
8:27
-0:50

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

7:09 /mi

Average Pace

7:42 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:33

57% of race

Time at Steady Pace

49:10

24% of race

Time at Slower Pace

38:09

19% of race

Average Pace: 7:42 /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 mi10:52:0522:137:0922:13
7:09
#9067
10K
6.21 mi11:15:0145:097:1622:56
7:23
#10040
15K
9.32 mi11:37:501:07:587:1822:49
7:21
#10143
20K
12.43 mi12:01:051:31:137:2023:15
7:29
#10219
Half
13.11 mi12:06:061:36:147:205:01
7:21
#10217
25K
15.53 mi12:24:251:54:337:2218:19
7:33
#10222
30K
18.64 mi12:48:542:19:027:2824:29
7:53
#10226
20M
20.00 mi12:59:532:30:017:3010:59
8:05
#10257
21M
21.00 mi13:08:412:38:497:348:48
8:48
#10353
35K
21.75 mi13:14:222:44:307:345:41
7:36
#10312
23M
23.00 mi13:24:392:54:477:3610:17
8:13
#10339
24M
24.00 mi13:32:403:02:487:378:01
8:01
#10369
40K
24.85 mi13:39:553:10:037:397:15
8:29
#10453
25.2M
25.20 mi13:43:073:13:157:403:12
9:17
#10483
Finish
26.22 mi13:51:443:21:527:428:37
8:27
#10683
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi90677652765210350(Top 36%)8269(Top 51%)8269(Top 414%)
10K6.21 mi3.10 mi10040-9738189-5378189-53711004(Top 39%)8667(Top 54%)8667(Top 434%)
15K9.32 mi3.11 mi10143-1038215-268215-2610350(Top 36%)8269(Top 51%)8269(Top 414%)
20K12.43 mi3.11 mi10219-768217-28217-210608(Top 37%)8314(Top 52%)8314(Top 417%)
Half13.11 mi0.68 mi10217+28213+48213+410447(Top 37%)8260(Top 51%)8260(Top 414%)
25K15.53 mi2.42 mi10222-58182+318182+3110389(Top 37%)8081(Top 50%)8081(Top 405%)
30K18.64 mi3.11 mi10226-48131+518131+5110490(Top 37%)7926(Top 49%)7926(Top 397%)
20M20.00 mi1.36 mi10257-318106+258106+2510961(Top 39%)8009(Top 50%)8009(Top 401%)
21M21.00 mi1.00 mi10353-968107-18107-112266(Top 43%)8491(Top 53%)8491(Top 425%)
35K21.75 mi0.75 mi10312+418066+418066+419309(Top 33%)7015(Top 44%)7015(Top 351%)
23M23.00 mi1.25 mi10339-278032+348032+3411419(Top 40%)7949(Top 49%)7949(Top 398%)
24M24.00 mi1.00 mi10369-308023+98023+911323(Top 40%)7814(Top 49%)7814(Top 391%)
40K24.85 mi0.85 mi10453-848037-148037-1413266(Top 47%)8641(Top 54%)8641(Top 433%)
25.2M25.20 mi0.35 mi10483-308032+58032+513278(Top 47%)8584(Top 53%)8584(Top 430%)
Finish26.22 mi1.02 mi10683-2008092-608092-6015896(Top 56%)9878(Top 61%)9878(Top 495%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10350

Males

8269

M50-54

8269

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

11004

Males

8667

M50-54

8667

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10350

Males

8269

M50-54

8269

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10608

Males

8314

M50-54

8314

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

10447

Males

8260

M50-54

8260

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

10389

Males

8081

M50-54

8081

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

10490

Males

7926

M50-54

7926

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10961

Males

8009

M50-54

8009

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12266

Males

8491

M50-54

8491

21M→35K

21.0 - 21.8 mi

Top 33%
×7story building
+17ft-86ft

Overall

9309

Males

7015

M50-54

7015

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

11419

Males

7949

M50-54

7949

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

11323

Males

7814

M50-54

7814

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13266

Males

8641

M50-54

8641

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13278

Males

8584

M50-54

8584

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

15896

Males

9878

M50-54

9878

Passing Analysis

Category:
Athletes Passed
1300
Passed By
2912
Net Change
-1616
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9067
5K → 10K371008-973#9067#10040
10K → 15K138241-103#10040#10143
15K → 20K157232-76#10143#10219
20K → Half2927+2#10219#10217
Half → 25K158163-5#10217#10222
25K → 30K243246-4#10222#10226
30K → 20M111142-31#10226#10257
20M → 21M81177-96#10257#10353
21M → 35K7332+41#10353#10312
35K → 23M101128-27#10312#10339
23M → 24M6696-30#10339#10369
24M → 40K49133-84#10369#10453
40K → 25.2M3060-30#10453#10483
25.2M → Finish27227-200#10483#10683
TOTALS13002912-1616
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing