Boston Marathon logo
BOSTON MARATHON 2025

Bertrand How-Choong

Bib: 6120•M

QC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 19%
Gender (Male)
#0 / 16105
Top 30%
Masters (Masters Men)
#0 / 10463
Top 16%
Division (M45-49)
#0 / 2386
Top 22%
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
7:06/mi
22:02
↑ 97↓ 3451.5%
10K· 6.21 mi
7:03/mi
43:56
↑ 79↓ 1380.4%
15K· 9.32 mi
6:52/mi
1:05:16
↑ 67↓ 78
20K· 12.43 mi
7:02/mi
1:27:06
↑ 106↓ 860.1%
Half· 13.11 mi
6:52/mi
1:31:47
↑ 19↓ 370.5%
25K· 15.53 mi
7:22/mi
1:49:39
↑ 66↓ 880.2%
30K· 18.64 mi
7:09/mi
2:11:51
↑ 181↓ 1480.2%
20M
7:10/mi
2:21:35
↑ 64↓ 500.2%
21M
7:21/mi
2:28:56
↑ 106↓ 241.6%
35K· 21.75 mi
6:54/mi
2:34:06
↑ 17↓ 861.7%
23M
6:47/mi
2:42:35
↑ 23↓ 630.6%
24M
6:33/mi
2:49:08
↓ 821.3%
40K· 24.85 mi
6:34/mi
2:54:45
↓ 200.3%
25.2M
7:00/mi
2:57:10
↑ 13↓ 160.2%
Finish· 26.22 mi
6:19/mi
3:03:36
↑ 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 Half⚖️ Balanced
Distance13.11 mi
Time1:31:47
Pace7:00 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:31:49
Pace7:00 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:5922:027:0622:02
7:06
-
10K
6.21 mi10:50:5343:567:0421:54
7:03
-0:03
15K
9.32 mi11:12:131:05:167:0021:20
6:52
-0:11
20K
12.43 mi11:34:031:27:067:0121:50
7:02
+0:10
Half
13.11 mi11:38:441:31:477:004:41
6:52
-0:10
25K
15.53 mi11:56:361:49:397:0417:52
7:22
+0:30
30K
18.64 mi12:18:482:11:517:0422:12
7:09
-0:13
20M
20.00 mi12:28:322:21:357:059:44
7:10
+0:01
21M
21.00 mi12:35:532:28:567:067:21
7:21
+0:11
35K
21.75 mi12:41:032:34:067:055:10
6:54
-0:27
23M
23.00 mi12:49:322:42:357:048:29
6:47
-0:07
24M
24.00 mi12:56:052:49:087:036:33
6:33
-0:14
40K
24.85 mi13:01:422:54:457:025:37
6:34
+0:01
25.2M
25.20 mi13:04:072:57:107:022:25
7:00
+0:26
Finish
26.22 mi13:10:333:03:367:006:26
6:19
-0:41

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

6:19 /mi

Average Pace

7:00 /mi

Slowest Pace

7:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

58:16

32% of race

Time at Steady Pace

2:05:20

68% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:00 /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 mi10:28:5922:027:0622:02
7:06
#8541
10K
6.21 mi10:50:5343:567:0421:54
7:03
#8431
15K
9.32 mi11:12:131:05:167:0021:20
6:52
#7765
20K
12.43 mi11:34:031:27:067:0121:50
7:02
#7558
Half
13.11 mi11:38:441:31:477:004:41
6:52
#7499
25K
15.53 mi11:56:361:49:397:0417:52
7:22
#7643
30K
18.64 mi12:18:482:11:517:0422:12
7:09
#7167
20M
20.00 mi12:28:322:21:357:059:44
7:10
#6913
21M
21.00 mi12:35:532:28:567:067:21
7:21
#6647
35K
21.75 mi12:41:032:34:067:055:10
6:54
#6537
23M
23.00 mi12:49:322:42:357:048:29
6:47
#6231
24M
24.00 mi12:56:052:49:087:036:33
6:33
#5992
40K
24.85 mi13:01:422:54:457:025:37
6:34
#5765
25.2M
25.20 mi13:04:072:57:107:022:25
7:00
#5628
Finish
26.22 mi13:10:333:03:367:006:26
6:19
#5436
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8541734273426712(Top 24%)6033(Top 37%)6033(Top 253%)
10K6.21 mi3.10 mi8431+1107256+867256+868272(Top 29%)7145(Top 44%)7145(Top 299%)
15K9.32 mi3.11 mi7765+6666827+4296827+4296712(Top 24%)6033(Top 37%)6033(Top 253%)
20K12.43 mi3.11 mi7558+2076673+1546673+1547035(Top 25%)6227(Top 39%)6227(Top 261%)
Half13.11 mi0.68 mi7499+596628+456628+456631(Top 23%)5927(Top 37%)5927(Top 248%)
25K15.53 mi2.42 mi7643-1446701-736701-738868(Top 31%)7257(Top 45%)7257(Top 304%)
30K18.64 mi3.11 mi7167+4766324+3776324+3775582(Top 20%)5000(Top 31%)5000(Top 210%)
20M20.00 mi1.36 mi6913+2546117+2076117+2075004(Top 18%)4489(Top 28%)4489(Top 188%)
21M21.00 mi1.00 mi6647+2665899+2185899+2183889(Top 14%)3539(Top 22%)3539(Top 148%)
35K21.75 mi0.75 mi6537+1105800+995800+994795(Top 17%)4238(Top 26%)4238(Top 178%)
23M23.00 mi1.25 mi6231+3065553+2475553+2472607(Top 9%)2410(Top 15%)2410(Top 101%)
24M24.00 mi1.00 mi5992+2395358+1955358+1952286(Top 8%)2118(Top 13%)2118(Top 89%)
40K24.85 mi0.85 mi5765+2275168+1905168+1901890(Top 7%)1744(Top 11%)1744(Top 73%)
25.2M25.20 mi0.35 mi5628+1375054+1145054+1141555(Top 5%)1426(Top 9%)1426(Top 60%)
Finish26.22 mi1.02 mi5436+1924894+1604894+1601976(Top 7%)1820(Top 11%)1820(Top 76%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21story building
+97ft-345ft

Overall

6712

Males

6033

M45-49

6033

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

8272

Males

7145

M45-49

7145

10K→15K

6.2 - 9.3 mi

Top 24%
×3story building
+67ft-78ft

Overall

6712

Males

6033

M45-49

6033

15K→20K

9.3 - 12.4 mi

Top 25%
×5story building
+106ft-86ft

Overall

7035

Males

6227

M45-49

6227

20K→Half

12.4 - 13.1 mi

Top 23%
×2story building
+19ft-37ft

Overall

6631

Males

5927

M45-49

5927

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8868

Males

7257

M45-49

7257

25K→30K

15.5 - 18.6 mi

Top 20%
×9story building
+181ft-148ft

Overall

5582

Males

5000

M45-49

5000

30K→20M

18.6 - 20.0 mi

Top 18%
×5story building
+64ft-50ft

Overall

5004

Males

4489

M45-49

4489

20M→21M

20.0 - 21.0 mi

Top 14%
×8story building
+106ft-24ft

Overall

3889

Males

3539

M45-49

3539

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4795

Males

4238

M45-49

4238

35K→23M

21.8 - 23.0 mi

Top 9%
×5story building
+23ft-63ft

Overall

2607

Males

2410

M45-49

2410

23M→24M

23.0 - 24.0 mi

Top 8%
×6story building
+12ft-82ft

Overall

2286

Males

2118

M45-49

2118

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1890

Males

1744

M45-49

1744

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1555

Males

1426

M45-49

1426

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2story building
+22ft-21ft

Overall

1976

Males

1820

M45-49

1820

Passing Analysis

Category:
Athletes Passed
3542
Passed By
437
Net Change
+3105
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8541
5K → 10K262152+110#8541#8431
10K → 15K6693+666#8431#7765
15K → 20K25043+207#7765#7558
20K → Half634+59#7558#7499
Half → 25K70214-144#7499#7643
25K → 30K48711+476#7643#7167
30K → 20M2573+254#7167#6913
20M → 21M2682+266#6913#6647
21M → 35K1144+110#6647#6537
35K → 23M3060+306#6537#6231
23M → 24M2390+239#6231#5992
24M → 40K2281+227#5992#5765
40K → 25.2M1370+137#5765#5628
25.2M → Finish1920+192#5628#5436
TOTALS3542437+3105
📊

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