Boston Marathon logo
BOSTON MARATHON 2025

Fan Him Tsang

Bib: 12420 M HK

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 29%
Gender (Male)
#0 / 16105
Top 42%
Masters (Masters Men)
#0 / 10463
Top 29%
Division (M55-59)
#0 / 1648
Top 11%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:13/mi
22:25
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:07/mi
44:32
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:14/mi
1:07:01
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:12/mi
1:29:24
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:09/mi
1:34:17
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:19/mi
1:52:01
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:33/mi
2:15:27
↑ 181↓ 1480.2%
138 ft elev
20M
7:33/mi
2:25:42
↑ 64↓ 500.2%
148 ft elev
21M
7:57/mi
2:33:39
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:14/mi
2:39:04
↑ 17↓ 861.7%
156 ft elev
23M
7:39/mi
2:48:39
↑ 23↓ 630.6%
116 ft elev
24M
7:34/mi
2:56:13
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:49/mi
3:02:54
↓ 200.3%
20 ft elev
25.2M
8:51/mi
3:05:57
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:46/mi
3:13:52
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Is this your race?

Claim it for a free AI report

A coach's-eye read of your race — emailed to you, free.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:17
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:39:35
Pace7:36 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:5322:257:1322:25
7:13
-
10K
6.21 mi11:35:0044:327:1022:07
7:07
-0:06
15K
9.32 mi11:57:291:07:017:1122:29
7:14
+0:07
20K
12.43 mi12:19:521:29:247:1222:23
7:12
-0:02
Half
13.11 mi12:24:451:34:177:124:53
7:09
-0:03
25K
15.53 mi12:42:291:52:017:1317:44
7:19
+0:10
30K
18.64 mi13:05:552:15:277:1623:26
7:33
+0:14
20M
20.00 mi13:16:102:25:427:1710:15
7:33
0:00
21M
21.00 mi13:24:072:33:397:197:57
7:57
+0:24
35K
21.75 mi13:29:322:39:047:195:25
7:14
-0:43
23M
23.00 mi13:39:072:48:397:209:35
7:39
+0:25
24M
24.00 mi13:46:412:56:137:217:34
7:34
-0:05
40K
24.85 mi13:53:223:02:547:226:41
7:49
+0:15
25.2M
25.20 mi13:56:253:05:577:233:03
8:51
+1:02
Finish
26.22 mi14:04:203:13:527:247:55
7:46
-1:05

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

7:07 /mi

Average Pace

7:24 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:26

61% of race

Time at Steady Pace

50:50

26% of race

Time at Slower Pace

25:36

13% of race

Average Pace: 7:24 /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 mi11:12:5322:257:1322:25
7:13
#9573
10K
6.21 mi11:35:0044:327:1022:07
7:07
#9159
15K
9.32 mi11:57:291:07:017:1122:29
7:14
#9246
20K
12.43 mi12:19:521:29:247:1222:23
7:12
#8921
Half
13.11 mi12:24:451:34:177:124:53
7:09
#8905
25K
15.53 mi12:42:291:52:017:1317:44
7:19
#8763
30K
18.64 mi13:05:552:15:277:1623:26
7:33
#8560
20M
20.00 mi13:16:102:25:427:1710:15
7:33
#8414
21M
21.00 mi13:24:072:33:397:197:57
7:57
#8272
35K
21.75 mi13:29:322:39:047:195:25
7:14
#8173
23M
23.00 mi13:39:072:48:397:209:35
7:39
#8080
24M
24.00 mi13:46:412:56:137:217:34
7:34
#8043
40K
24.85 mi13:53:223:02:547:226:41
7:49
#8049
25.2M
25.20 mi13:56:253:05:577:233:03
8:51
#8089
Finish
26.22 mi14:04:203:13:527:247:55
7:46
#8173
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi9573792879289419(Top 33%)7777(Top 48%)7777(Top 472%)
10K6.21 mi3.10 mi9159+4147691+2377691+2378822(Top 31%)7490(Top 47%)7490(Top 454%)
15K9.32 mi3.11 mi9246-877724-337724-339419(Top 33%)7777(Top 48%)7777(Top 472%)
20K12.43 mi3.11 mi8921+3257517+2077517+2078241(Top 29%)7013(Top 44%)7013(Top 426%)
Half13.11 mi0.68 mi8905+167505+127505+128682(Top 31%)7294(Top 45%)7294(Top 443%)
25K15.53 mi2.42 mi8763+1427395+1107395+1108447(Top 30%)7027(Top 44%)7027(Top 426%)
30K18.64 mi3.11 mi8560+2037213+1827213+1828034(Top 28%)6611(Top 41%)6611(Top 401%)
20M20.00 mi1.36 mi8414+1467094+1197094+1197296(Top 26%)6020(Top 37%)6020(Top 365%)
21M21.00 mi1.00 mi8272+1426979+1156979+1157076(Top 25%)5727(Top 36%)5727(Top 348%)
35K21.75 mi0.75 mi8173+996898+816898+816858(Top 24%)5617(Top 35%)5617(Top 341%)
23M23.00 mi1.25 mi8080+936784+1146784+1147597(Top 27%)5927(Top 37%)5927(Top 360%)
24M24.00 mi1.00 mi8043+376725+596725+598141(Top 29%)6199(Top 38%)6199(Top 376%)
40K24.85 mi0.85 mi8049-66700+256700+258854(Top 31%)6436(Top 40%)6436(Top 391%)
25.2M25.20 mi0.35 mi8089-406720-206720-2010820(Top 38%)7373(Top 46%)7373(Top 447%)
Finish26.22 mi1.02 mi8173-846733-136733-1311176(Top 39%)7594(Top 47%)7594(Top 461%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

9419

Males

7777

M55-59

7777

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8822

Males

7490

M55-59

7490

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

9419

Males

7777

M55-59

7777

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

8241

Males

7013

M55-59

7013

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8682

Males

7294

M55-59

7294

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

8447

Males

7027

M55-59

7027

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

8034

Males

6611

M55-59

6611

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7296

Males

6020

M55-59

6020

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

7076

Males

5727

M55-59

5727

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6858

Males

5617

M55-59

5617

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7597

Males

5927

M55-59

5927

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

8141

Males

6199

M55-59

6199

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8854

Males

6436

M55-59

6436

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10820

Males

7373

M55-59

7373

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

11176

Males

7594

M55-59

7594

Passing Analysis

Category:
Athletes Passed
2360
Passed By
960
Net Change
+1400
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9573
5K → 10K49177+414#9573#9159
10K → 15K126213-87#9159#9246
15K → 20K35429+325#9246#8921
20K → Half4125+16#8921#8905
Half → 25K22078+142#8905#8763
25K → 30K309106+203#8763#8560
30K → 20M17327+146#8560#8414
20M → 21M16523+142#8414#8272
21M → 35K11112+99#8272#8173
35K → 23M15057+93#8173#8080
23M → 24M9053+37#8080#8043
24M → 40K6470-6#8043#8049
40K → 25.2M2161-40#8049#8089
25.2M → Finish45129-84#8089#8173
TOTALS2360960+1400
📊

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