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BOSTON MARATHON 2025

Andrew Chong

Bib: 12757•M

HI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 42%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 45%
Division (M55-59)
#0 / 1648
Top 30%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:00
Rank: #11341
Start → 5K
23:00 | 7:24/mi
10K· 6.21 mi
45:54
Rank: #11121 (+220)
5K → 10K
22:54 | 7:22/mi
15K· 9.32 mi
1:09:10
Rank: #11259 (-138)
10K → 15K
23:16 | 7:29/mi
20K· 12.43 mi
1:32:31
Rank: #11165 (+94)
15K → 20K
23:21 | 7:31/mi
Half· 13.11 mi
1:37:34
Rank: #11165
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:55:53
Rank: #10978 (+187)
Half → 25K
18:19 | 7:33/mi
30K· 18.64 mi
2:20:29
Rank: #10920 (+58)
25K → 30K
24:36 | 7:55/mi
20M
2:31:29
Rank: #10888 (+32)
30K → 20M
11:00 | 8:06/mi
21M
2:40:18
Rank: #10937 (-49)
20M → 21M
8:49 | 8:49/mi
35K· 21.75 mi
2:46:13
Rank: #10939 (-2)
21M → 35K
5:55 | 7:55/mi
23M
2:57:03
Rank: #11113 (-174)
35K → 23M
10:50 | 8:39/mi
24M
3:05:29
Rank: #11231 (-118)
23M → 24M
8:26 | 8:26/mi
40K· 24.85 mi
3:13:05
Rank: #11424 (-193)
24M → 40K
7:36 | 8:53/mi
25.2M
3:16:34
Rank: #11538 (-114)
40K → 25.2M
3:29 | 10:06/mi
Finish· 26.22 mi
3:25:52
Rank: #11942 (-404)
25.2M → Finish
9:18 | 9:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:34
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:48:18
Pace8:16 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4723:007:2423:00
7:24
-
10K
6.21 mi11:13:4145:547:2322:54
7:22
-0:02
15K
9.32 mi11:36:571:09:107:2523:16
7:29
+0:07
20K
12.43 mi12:00:181:32:317:2723:21
7:31
+0:02
Half
13.11 mi12:05:211:37:347:275:03
7:24
-0:07
25K
15.53 mi12:23:401:55:537:2818:19
7:33
+0:09
30K
18.64 mi12:48:162:20:297:3224:36
7:55
+0:22
20M
20.00 mi12:59:162:31:297:3411:00
8:06
+0:11
21M
21.00 mi13:08:052:40:187:388:49
8:49
+0:43
35K
21.75 mi13:14:002:46:137:395:55
7:55
-0:54
23M
23.00 mi13:24:502:57:037:4210:50
8:39
+0:44
24M
24.00 mi13:33:163:05:297:448:26
8:26
-0:13
40K
24.85 mi13:40:523:13:057:467:36
8:53
+0:27
25.2M
25.20 mi13:44:213:16:347:483:29
10:06
+1:13
Finish
26.22 mi13:53:393:25:527:519:18
9:08
-0:58

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

7:22 /mi

Average Pace

7:51 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:34

47% of race

Time at Steady Pace

59:50

29% of race

Time at Slower Pace

48:28

24% of race

Average Pace: 7:51 /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 mi10:50:4723:007:2423:00
7:24
#11341
10K
6.21 mi11:13:4145:547:2322:54
7:22
#11121
15K
9.32 mi11:36:571:09:107:2523:16
7:29
#11259
20K
12.43 mi12:00:181:32:317:2723:21
7:31
#11165
Half
13.11 mi12:05:211:37:347:275:03
7:24
#11165
25K
15.53 mi12:23:401:55:537:2818:19
7:33
#10978
30K
18.64 mi12:48:162:20:297:3224:36
7:55
#10920
20M
20.00 mi12:59:162:31:297:3411:00
8:06
#10888
21M
21.00 mi13:08:052:40:187:388:49
8:49
#10937
35K
21.75 mi13:14:002:46:137:395:55
7:55
#10939
23M
23.00 mi13:24:502:57:037:4210:50
8:39
#11113
24M
24.00 mi13:33:163:05:297:448:26
8:26
#11231
40K
24.85 mi13:40:523:13:057:467:36
8:53
#11424
25.2M
25.20 mi13:44:213:16:347:483:29
10:06
#11538
Finish
26.22 mi13:53:393:25:527:519:18
9:08
#11942
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi113418861886111662(Top 41%)8908(Top 55%)8908(Top 541%)
10K6.21 mi3.10 mi11121+2208735+1268735+12610912(Top 38%)8619(Top 54%)8619(Top 523%)
15K9.32 mi3.11 mi11259-1388776-418776-4111662(Top 41%)8908(Top 55%)8908(Top 541%)
20K12.43 mi3.11 mi11165+948703+738703+7310882(Top 38%)8443(Top 52%)8443(Top 512%)
Half13.11 mi0.68 mi111658700+38700+310867(Top 38%)8492(Top 53%)8492(Top 515%)
25K15.53 mi2.42 mi10978+1878571+1298571+12910398(Top 37%)8090(Top 50%)8090(Top 491%)
30K18.64 mi3.11 mi10920+588469+1028469+10210779(Top 38%)8076(Top 50%)8076(Top 490%)
20M20.00 mi1.36 mi10888+328409+608409+6011058(Top 39%)8057(Top 50%)8057(Top 489%)
21M21.00 mi1.00 mi10937-498392+178392+1712373(Top 44%)8546(Top 53%)8546(Top 519%)
35K21.75 mi0.75 mi10939-28370+228370+2211600(Top 41%)8135(Top 51%)8135(Top 494%)
23M23.00 mi1.25 mi11113-1748414-448414-4414232(Top 50%)9267(Top 58%)9267(Top 562%)
24M24.00 mi1.00 mi11231-1188424-108424-1014067(Top 50%)9166(Top 57%)9166(Top 556%)
40K24.85 mi0.85 mi11424-1938477-538477-5315649(Top 55%)9728(Top 60%)9728(Top 590%)
25.2M25.20 mi0.35 mi11538-1148530-538530-5317394(Top 61%)10534(Top 65%)10534(Top 639%)
Finish26.22 mi1.02 mi11942-4048688-1588688-15819593(Top 69%)11618(Top 72%)11618(Top 705%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

11662

Males

8908

M55-59

8908

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10912

Males

8619

M55-59

8619

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

11662

Males

8908

M55-59

8908

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10882

Males

8443

M55-59

8443

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10867

Males

8492

M55-59

8492

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

10398

Males

8090

M55-59

8090

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10779

Males

8076

M55-59

8076

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

11058

Males

8057

M55-59

8057

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12373

Males

8546

M55-59

8546

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11600

Males

8135

M55-59

8135

35K→23M

21.8 - 23.0 mi

Top 50%
×5stories
+23ft-63ft

Overall

14232

Males

9267

M55-59

9267

23M→24M

23.0 - 24.0 mi

Top 50%
×6stories
+12ft-82ft

Overall

14067

Males

9166

M55-59

9166

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15649

Males

9728

M55-59

9728

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17394

Males

10534

M55-59

10534

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2stories
+22ft-21ft

Overall

19593

Males

11618

M55-59

11618

Passing Analysis

Category:
Athletes Passed
1735
Passed By
2336
Net Change
-601
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11341
5K → 10K387167+220#11341#11121
10K → 15K142280-138#11121#11259
15K → 20K216122+94#11259#11165
20K → Half39390#11165#11165
Half → 25K25265+187#11165#10978
25K → 30K261203+58#10978#10920
30K → 20M12593+32#10920#10888
20M → 21M88137-49#10888#10937
21M → 35K5456-2#10937#10939
35K → 23M60234-174#10939#11113
23M → 24M55173-118#11113#11231
24M → 40K26219-193#11231#11424
40K → 25.2M16130-114#11424#11538
25.2M → Finish14418-404#11538#11942
TOTALS17352336-601
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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