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BOSTON MARATHON 2025

Raymond Chow

Bib: 6299•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 46%
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:32
Rank: #4690
Start → 5K
20:32 | 6:37/mi
10K· 6.21 mi
41:41
Rank: #5454 (-764)
5K → 10K
21:09 | 6:48/mi
15K· 9.32 mi
1:03:33
Rank: #6387 (-933)
10K → 15K
21:52 | 7:02/mi
20K· 12.43 mi
1:27:37
Rank: #7831 (-1444)
15K → 20K
24:04 | 7:45/mi
Half· 13.11 mi
1:32:57
Rank: #8105 (-274)
20K → Half
5:20 | 7:49/mi
25K· 15.53 mi
1:53:13
Rank: #9468 (-1363)
Half → 25K
20:16 | 8:22/mi
30K· 18.64 mi
2:19:11
Rank: #10279 (-811)
25K → 30K
25:58 | 8:21/mi
20M
2:31:24
Rank: #10857 (-578)
30K → 20M
12:13 | 8:59/mi
21M
2:40:42
Rank: #11091 (-234)
20M → 21M
9:18 | 9:18/mi
35K· 21.75 mi
2:47:11
Rank: #11293 (-202)
21M → 35K
6:29 | 8:40/mi
23M
2:58:54
Rank: #11795 (-502)
35K → 23M
11:43 | 9:21/mi
24M
3:07:50
Rank: #12065 (-270)
23M → 24M
8:56 | 8:56/mi
40K· 24.85 mi
3:16:13
Rank: #12436 (-371)
24M → 40K
8:23 | 9:48/mi
25.2M
3:19:50
Rank: #12595 (-159)
40K → 25.2M
3:37 | 10:29/mi
Finish· 26.22 mi
3:29:45
Rank: #13143 (-548)
25.2M → Finish
9:55 | 9:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:57
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:56:48
Pace8:55 /mi
📊Positive Split: 25.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:3220:326:3720:32
6:37
-
10K
6.21 mi10:48:4141:416:4221:09
6:48
+0:11
15K
9.32 mi11:10:331:03:336:4921:52
7:02
+0:14
20K
12.43 mi11:34:371:27:377:0324:04
7:45
+0:43
Half
13.11 mi11:39:571:32:577:055:20
7:49
+0:04
25K
15.53 mi12:00:131:53:137:1720:16
8:22
+0:33
30K
18.64 mi12:26:112:19:117:2825:58
8:21
-0:01
20M
20.00 mi12:38:242:31:247:3412:13
8:59
+0:38
21M
21.00 mi12:47:422:40:427:399:18
9:18
+0:19
35K
21.75 mi12:54:112:47:117:416:29
8:40
-0:38
23M
23.00 mi13:05:542:58:547:4711:43
9:21
+0:41
24M
24.00 mi13:14:503:07:507:508:56
8:56
-0:25
40K
24.85 mi13:23:133:16:137:548:23
9:48
+0:52
25.2M
25.20 mi13:26:503:19:507:563:37
10:29
+0:41
Finish
26.22 mi13:36:453:29:458:009:55
9:44
-0:45

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

6:37 /mi

Average Pace

8:00 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:57

44% of race

Time at Steady Pace

1:13:52

35% of race

Time at Slower Pace

42:56

20% of race

Average Pace: 8:00 /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 mi10:27:3220:326:3720:32
6:37
#4690
10K
6.21 mi10:48:4141:416:4221:09
6:48
#5454
15K
9.32 mi11:10:331:03:336:4921:52
7:02
#6387
20K
12.43 mi11:34:371:27:377:0324:04
7:45
#7831
Half
13.11 mi11:39:571:32:577:055:20
7:49
#8105
25K
15.53 mi12:00:131:53:137:1720:16
8:22
#9468
30K
18.64 mi12:26:112:19:117:2825:58
8:21
#10279
20M
20.00 mi12:38:242:31:247:3412:13
8:59
#10857
21M
21.00 mi12:47:422:40:427:399:18
9:18
#11091
35K
21.75 mi12:54:112:47:117:416:29
8:40
#11293
23M
23.00 mi13:05:542:58:547:4711:43
9:21
#11795
24M
24.00 mi13:14:503:07:507:508:56
8:56
#12065
40K
24.85 mi13:23:133:16:137:548:23
9:48
#12436
25.2M
25.20 mi13:26:503:19:507:563:37
10:29
#12595
Finish
26.22 mi13:36:453:29:458:009:55
9:44
#13143
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4690439943997884(Top 28%)6876(Top 43%)6876(Top 122%)
10K6.21 mi3.10 mi5454-7645048-6495048-6496479(Top 23%)5867(Top 36%)5867(Top 104%)
15K9.32 mi3.11 mi6387-9335817-7695817-7697884(Top 28%)6876(Top 43%)6876(Top 122%)
20K12.43 mi3.11 mi7831-14446846-10296846-102912807(Top 45%)9333(Top 58%)9333(Top 165%)
Half13.11 mi0.68 mi8105-2747016-1707016-17014334(Top 50%)10027(Top 62%)10027(Top 178%)
25K15.53 mi2.42 mi9468-13637777-7617777-76116277(Top 57%)10760(Top 67%)10760(Top 191%)
30K18.64 mi3.11 mi10279-8118164-3878164-38713871(Top 49%)9536(Top 59%)9536(Top 169%)
20M20.00 mi1.36 mi10857-5788394-2308394-23016713(Top 59%)10683(Top 66%)10683(Top 189%)
21M21.00 mi1.00 mi11091-2348469-758469-7515126(Top 53%)9838(Top 61%)9838(Top 174%)
35K21.75 mi0.75 mi11293-2028532-638532-6316424(Top 58%)10347(Top 64%)10347(Top 183%)
23M23.00 mi1.25 mi11795-5028742-2108742-21018026(Top 63%)10984(Top 68%)10984(Top 195%)
24M24.00 mi1.00 mi12065-2708827-858827-8516986(Top 60%)10443(Top 65%)10443(Top 185%)
40K24.85 mi0.85 mi12436-3718979-1528979-15219802(Top 70%)11701(Top 73%)11701(Top 207%)
25.2M25.20 mi0.35 mi12595-1599045-669045-6618906(Top 67%)11261(Top 70%)11261(Top 200%)
Finish26.22 mi1.02 mi13143-5489267-2229267-22222003(Top 77%)12784(Top 79%)12784(Top 227%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7884

Males

6876

M18-39

6876

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

6479

Males

5867

M18-39

5867

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7884

Males

6876

M18-39

6876

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

12807

Males

9333

M18-39

9333

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

14334

Males

10027

M18-39

10027

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

16277

Males

10760

M18-39

10760

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13871

Males

9536

M18-39

9536

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16713

Males

10683

M18-39

10683

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

15126

Males

9838

M18-39

9838

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

16424

Males

10347

M18-39

10347

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

18026

Males

10984

M18-39

10984

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

16986

Males

10443

M18-39

10443

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19802

Males

11701

M18-39

11701

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

18906

Males

11261

M18-39

11261

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

22003

Males

12784

M18-39

12784

Passing Analysis

Category:
Athletes Passed
317
Passed By
8768
Net Change
-8453
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4690
5K → 10K25789-764#4690#5454
10K → 15K21954-933#5454#6387
15K → 20K51449-1444#6387#7831
20K → Half3277-274#7831#8105
Half → 25K141377-1363#8105#9468
25K → 30K66875-811#9468#10279
30K → 20M30608-578#10279#10857
20M → 21M44278-234#10857#11091
21M → 35K20222-202#11091#11293
35K → 23M27529-502#11293#11795
23M → 24M26296-270#11795#12065
24M → 40K22393-371#12065#12436
40K → 25.2M10169-159#12436#12595
25.2M → Finish4552-548#12595#13143
TOTALS3178768-8453
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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