Boston Marathon logo
BOSTON MARATHON 2025

Shanzhu Shi

Bib: 22427•M

PA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 27%
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
8:16/mi
25:42
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
50:37
↑ 79↓ 1380.4%
15K· 9.32 mi
7:57/mi
1:15:18
↑ 67↓ 78
20K· 12.43 mi
8:01/mi
1:40:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:45:31
↑ 19↓ 370.5%
25K· 15.53 mi
7:59/mi
2:04:52
↑ 66↓ 880.2%
30K· 18.64 mi
8:12/mi
2:30:21
↑ 181↓ 1480.2%
20M
8:15/mi
2:41:34
↑ 64↓ 500.2%
21M
8:46/mi
2:50:20
↑ 106↓ 241.6%
35K· 21.75 mi
8:11/mi
2:56:27
↑ 17↓ 861.7%
23M
8:37/mi
3:07:14
↑ 23↓ 630.6%
24M
10:44/mi
3:17:58
↓ 821.3%
40K· 24.85 mi
8:50/mi
3:25:31
↓ 200.3%
25.2M
10:00/mi
3:28:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:58/mi
3:38:06
↑ 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
Time1:45:31
Pace8:03 /mi
2nd Half
Distance13.11 mi
Time1:52:35
Pace8:35 /mi
📊Positive Split: 6.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3225:428:1625:42
8:16
-
10K
6.21 mi11:46:2750:378:0924:55
8:01
-0:15
15K
9.32 mi12:11:081:15:188:0524:41
7:57
-0:04
20K
12.43 mi12:36:031:40:138:0424:55
8:01
+0:04
Half
13.11 mi12:41:211:45:318:035:18
7:46
-0:15
25K
15.53 mi13:00:422:04:528:0219:21
7:59
+0:13
30K
18.64 mi13:26:112:30:218:0425:29
8:12
+0:13
20M
20.00 mi13:37:242:41:348:0511:13
8:15
+0:03
21M
21.00 mi13:46:102:50:208:078:46
8:46
+0:31
35K
21.75 mi13:52:172:56:278:076:07
8:11
-0:35
23M
23.00 mi14:03:043:07:148:0810:47
8:37
+0:26
24M
24.00 mi14:13:483:17:588:1510:44
10:44
+2:07
40K
24.85 mi14:21:213:25:318:167:33
8:50
-1:54
25.2M
25.20 mi14:24:483:28:588:183:27
10:00
+1:10
Finish
26.22 mi14:33:563:38:068:199:08
8:58
-1:02

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

7:46 /mi

Average Pace

8:19 /mi

Slowest Pace

10:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:18

2% of race

Time at Steady Pace

2:53:10

79% of race

Time at Slower Pace

39:38

18% of race

Average Pace: 8:19 /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 mi11:21:3225:428:1625:42
8:16
#18532
10K
6.21 mi11:46:2750:378:0924:55
8:01
#17605
15K
9.32 mi12:11:081:15:188:0524:41
7:57
#16915
20K
12.43 mi12:36:031:40:138:0424:55
8:01
#16413
Half
13.11 mi12:41:211:45:318:035:18
7:46
#16293
25K
15.53 mi13:00:422:04:528:0219:21
7:59
#15871
30K
18.64 mi13:26:112:30:218:0425:29
8:12
#15254
20M
20.00 mi13:37:242:41:348:0511:13
8:15
#14968
21M
21.00 mi13:46:102:50:208:078:46
8:46
#14748
35K
21.75 mi13:52:172:56:278:076:07
8:11
#14670
23M
23.00 mi14:03:043:07:148:0810:47
8:37
#14604
24M
24.00 mi14:13:483:17:588:1510:44
10:44
#15250
40K
24.85 mi14:21:213:25:318:167:33
8:50
#15227
25.2M
25.20 mi14:24:483:28:588:183:27
10:00
#15263
Finish
26.22 mi14:33:563:38:068:199:08
8:58
#15399
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi18532118271182715607(Top 55%)10647(Top 66%)10647(Top 846%)
10K6.21 mi3.10 mi17605+92711452+37511452+37516627(Top 59%)11078(Top 69%)11078(Top 880%)
15K9.32 mi3.11 mi16915+69011195+25711195+25715607(Top 55%)10647(Top 66%)10647(Top 846%)
20K12.43 mi3.11 mi16413+50210981+21410981+21415074(Top 53%)10351(Top 64%)10351(Top 822%)
Half13.11 mi0.68 mi16293+12010916+6510916+6513959(Top 49%)9903(Top 61%)9903(Top 787%)
25K15.53 mi2.42 mi15871+42210729+18710729+18713731(Top 48%)9624(Top 60%)9624(Top 764%)
30K18.64 mi3.11 mi15254+61710408+32110408+32112837(Top 45%)9070(Top 56%)9070(Top 720%)
20M20.00 mi1.36 mi14968+28610245+16310245+16312176(Top 43%)8618(Top 54%)8618(Top 685%)
21M21.00 mi1.00 mi14748+22010129+11610129+11612084(Top 43%)8419(Top 52%)8419(Top 669%)
35K21.75 mi0.75 mi14670+7810080+4910080+4913444(Top 47%)9020(Top 56%)9020(Top 716%)
23M23.00 mi1.25 mi14604+6610013+6710013+6713998(Top 49%)9171(Top 57%)9171(Top 728%)
24M24.00 mi1.00 mi15250-64610258-24510258-24523383(Top 82%)13499(Top 84%)13499(Top 1072%)
40K24.85 mi0.85 mi15227+2310209+4910209+4915340(Top 54%)9588(Top 60%)9588(Top 762%)
25.2M25.20 mi0.35 mi15263-3610213-410213-416989(Top 60%)10354(Top 64%)10354(Top 822%)
Finish26.22 mi1.02 mi15399-13610252-3910252-3918820(Top 66%)11269(Top 70%)11269(Top 895%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15607

Males

10647

M60-64

10647

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16627

Males

11078

M60-64

11078

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15607

Males

10647

M60-64

10647

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

15074

Males

10351

M60-64

10351

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13959

Males

9903

M60-64

9903

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13731

Males

9624

M60-64

9624

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

12837

Males

9070

M60-64

9070

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12176

Males

8618

M60-64

8618

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12084

Males

8419

M60-64

8419

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

13444

Males

9020

M60-64

9020

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

13998

Males

9171

M60-64

9171

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23383

Males

13499

M60-64

13499

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15340

Males

9588

M60-64

9588

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16989

Males

10354

M60-64

10354

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18820

Males

11269

M60-64

11269

Passing Analysis

Category:
Athletes Passed
4296
Passed By
1163
Net Change
+3133
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18532
5K → 10K96134+927#18532#17605
10K → 15K70818+690#17605#16915
15K → 20K53735+502#16915#16413
20K → Half1222+120#16413#16293
Half → 25K43513+422#16293#15871
25K → 30K63518+617#15871#15254
30K → 20M29711+286#15254#14968
20M → 21M23414+220#14968#14748
21M → 35K10527+78#14748#14670
35K → 23M12559+66#14670#14604
23M → 24M8654-646#14604#15250
24M → 40K8360+23#15250#15227
40K → 25.2M2359-36#15227#15263
25.2M → Finish23159-136#15263#15399
TOTALS42961163+3133
📊

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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing