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BOSTON MARATHON 2025

Daniel Koh

Bib: 9893•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 20%
Gender (Male)
#0 / 16105
Top 32%
Masters (Masters Men)
#0 / 10463
Top 17%
Division (M40-44)
#0 / 2247
Top 42%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:16
Rank: #6665
Start → 5K
21:16 | 6:51/mi
10K· 6.21 mi
42:05
Rank: #6041 (+624)
5K → 10K
20:49 | 6:42/mi
15K· 9.32 mi
1:03:01
Rank: #5822 (+219)
10K → 15K
20:56 | 6:44/mi
20K· 12.43 mi
1:24:51
Rank: #6200 (-378)
15K → 20K
21:50 | 7:02/mi
Half· 13.11 mi
1:29:34
Rank: #6255 (-55)
20K → Half
4:43 | 6:55/mi
25K· 15.53 mi
1:46:37
Rank: #6284 (-29)
Half → 25K
17:03 | 7:02/mi
30K· 18.64 mi
2:09:20
Rank: #6250 (+34)
25K → 30K
22:43 | 7:19/mi
20M
2:19:27
Rank: #6211 (+39)
30K → 20M
10:07 | 7:27/mi
21M
2:27:10
Rank: #6141 (+70)
20M → 21M
7:43 | 7:43/mi
35K· 21.75 mi
2:32:33
Rank: #6116 (+25)
21M → 35K
5:23 | 7:12/mi
23M
2:41:41
Rank: #5979 (+137)
35K → 23M
9:08 | 7:18/mi
24M
2:48:48
Rank: #5907 (+72)
23M → 24M
7:07 | 7:07/mi
40K· 24.85 mi
2:54:54
Rank: #5801 (+106)
24M → 40K
6:06 | 7:08/mi
25.2M
2:57:38
Rank: #5748 (+53)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:04:44
Rank: #5679 (+69)
25.2M → Finish
7:06 | 6:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:34
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:35:10
Pace7:16 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3021:166:5121:16
6:51
-
10K
6.21 mi11:08:1942:056:4620:49
6:42
-0:09
15K
9.32 mi11:29:151:03:016:4620:56
6:44
+0:02
20K
12.43 mi11:51:051:24:516:5021:50
7:02
+0:18
Half
13.11 mi11:55:481:29:346:504:43
6:55
-0:07
25K
15.53 mi12:12:511:46:376:5217:03
7:02
+0:07
30K
18.64 mi12:35:342:09:206:5622:43
7:19
+0:17
20M
20.00 mi12:45:412:19:276:5810:07
7:27
+0:08
21M
21.00 mi12:53:242:27:107:007:43
7:43
+0:16
35K
21.75 mi12:58:472:32:337:015:23
7:12
-0:31
23M
23.00 mi13:07:552:41:417:029:08
7:18
+0:06
24M
24.00 mi13:15:022:48:487:027:07
7:07
-0:11
40K
24.85 mi13:21:082:54:547:026:06
7:08
+0:01
25.2M
25.20 mi13:23:522:57:387:032:44
7:56
+0:48
Finish
26.22 mi13:30:583:04:447:037:06
6:58
-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

6:42 /mi

Average Pace

7:03 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:10

89% of race

Time at Steady Pace

17:50

10% of race

Time at Slower Pace

2:44

1% of race

Average Pace: 7:03 /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 mi10:47:3021:166:5121:16
6:51
#6665
10K
6.21 mi11:08:1942:056:4620:49
6:42
#6041
15K
9.32 mi11:29:151:03:016:4620:56
6:44
#5822
20K
12.43 mi11:51:051:24:516:5021:50
7:02
#6200
Half
13.11 mi11:55:481:29:346:504:43
6:55
#6255
25K
15.53 mi12:12:511:46:376:5217:03
7:02
#6284
30K
18.64 mi12:35:342:09:206:5622:43
7:19
#6250
20M
20.00 mi12:45:412:19:276:5810:07
7:27
#6211
21M
21.00 mi12:53:242:27:107:007:43
7:43
#6141
35K
21.75 mi12:58:472:32:337:015:23
7:12
#6116
23M
23.00 mi13:07:552:41:417:029:08
7:18
#5979
24M
24.00 mi13:15:022:48:487:027:07
7:07
#5907
40K
24.85 mi13:21:082:54:547:026:06
7:08
#5801
25.2M
25.20 mi13:23:522:57:387:032:44
7:56
#5748
Finish
26.22 mi13:30:583:04:447:037:06
6:58
#5679
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6665604860485464(Top 19%)5023(Top 31%)5023(Top 224%)
10K6.21 mi3.10 mi6041+6245542+5065542+5065353(Top 19%)4954(Top 31%)4954(Top 220%)
15K9.32 mi3.11 mi5822+2195349+1935349+1935464(Top 19%)5023(Top 31%)5023(Top 224%)
20K12.43 mi3.11 mi6200-3785645-2965645-2967038(Top 25%)6230(Top 39%)6230(Top 277%)
Half13.11 mi0.68 mi6255-555679-345679-346966(Top 25%)6186(Top 38%)6186(Top 275%)
25K15.53 mi2.42 mi6284-295689-105689-106529(Top 23%)5783(Top 36%)5783(Top 257%)
30K18.64 mi3.11 mi6250+345634+555634+556510(Top 23%)5658(Top 35%)5658(Top 252%)
20M20.00 mi1.36 mi6211+395589+455589+456656(Top 23%)5616(Top 35%)5616(Top 250%)
21M21.00 mi1.00 mi6141+705515+745515+745737(Top 20%)4897(Top 30%)4897(Top 218%)
35K21.75 mi0.75 mi6116+255490+255490+256554(Top 23%)5420(Top 34%)5420(Top 241%)
23M23.00 mi1.25 mi5979+1375366+1245366+1245444(Top 19%)4633(Top 29%)4633(Top 206%)
24M24.00 mi1.00 mi5907+725292+745292+745309(Top 19%)4476(Top 28%)4476(Top 199%)
40K24.85 mi0.85 mi5801+1065196+965196+964687(Top 17%)3992(Top 25%)3992(Top 178%)
25.2M25.20 mi0.35 mi5748+535146+505146+505562(Top 20%)4480(Top 28%)4480(Top 199%)
Finish26.22 mi1.02 mi5679+695079+675079+675513(Top 19%)4437(Top 28%)4437(Top 197%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5464

Males

5023

M40-44

5023

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5353

Males

4954

M40-44

4954

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5464

Males

5023

M40-44

5023

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

7038

Males

6230

M40-44

6230

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

6966

Males

6186

M40-44

6186

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6529

Males

5783

M40-44

5783

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6510

Males

5658

M40-44

5658

30K→20M

18.6 - 20.0 mi

Top 23%
×5stories
+64ft-50ft

Overall

6656

Males

5616

M40-44

5616

20M→21M

20.0 - 21.0 mi

Top 20%
×8stories
+106ft-24ft

Overall

5737

Males

4897

M40-44

4897

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6554

Males

5420

M40-44

5420

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5444

Males

4633

M40-44

4633

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5309

Males

4476

M40-44

4476

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4687

Males

3992

M40-44

3992

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5562

Males

4480

M40-44

4480

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5513

Males

4437

M40-44

4437

Passing Analysis

Category:
Athletes Passed
2044
Passed By
1058
Net Change
+986
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6665
5K → 10K64521+624#6665#6041
10K → 15K26142+219#6041#5822
15K → 20K63441-378#5822#6200
20K → Half1469-55#6200#6255
Half → 25K106135-29#6255#6284
25K → 30K190156+34#6284#6250
30K → 20M10162+39#6250#6211
20M → 21M10131+70#6211#6141
21M → 35K5025+25#6141#6116
35K → 23M15013+137#6116#5979
23M → 24M8917+72#5979#5907
24M → 40K11812+106#5907#5801
40K → 25.2M596+53#5801#5748
25.2M → Finish9728+69#5748#5679
TOTALS20441058+986
📊

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