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BOSTON MARATHON 2025

Ching-Tay Ko

Bib: 13350•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 37%
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
7:32/mi
23:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:56/mi
48:05
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:11:36
↑ 67↓ 78
20K· 12.43 mi
7:52/mi
1:36:02
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:41:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:19/mi
2:01:27
↑ 66↓ 880.2%
30K· 18.64 mi
8:55/mi
2:29:09
↑ 181↓ 1480.2%
20M
8:54/mi
2:41:15
↑ 64↓ 500.2%
21M
10:21/mi
2:51:36
↑ 106↓ 241.6%
35K· 21.75 mi
8:57/mi
2:58:18
↑ 17↓ 861.7%
23M
12:08/mi
3:13:30
↑ 23↓ 630.6%
24M
9:17/mi
3:22:47
↓ 821.3%
40K· 24.85 mi
9:21/mi
3:30:47
↓ 200.3%
25.2M
10:06/mi
3:34:16
↑ 13↓ 160.2%
Finish· 26.22 mi
9:30/mi
3:43:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:16
Pace7:43 /mi
2nd Half
Distance13.11 mi
Time2:02:41
Pace9:22 /mi
📊Positive Split: 21.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0623:257:3223:25
7:32
-
10K
6.21 mi11:38:4648:057:4424:40
7:56
+0:24
15K
9.32 mi12:02:171:11:367:4123:31
7:34
-0:22
20K
12.43 mi12:26:431:36:027:4424:26
7:52
+0:18
Half
13.11 mi12:31:571:41:167:435:14
7:40
-0:12
25K
15.53 mi12:52:082:01:277:4920:11
8:19
+0:39
30K
18.64 mi13:19:502:29:098:0027:42
8:55
+0:36
20M
20.00 mi13:31:562:41:158:0412:06
8:54
-0:01
21M
21.00 mi13:42:172:51:368:1010:21
10:21
+1:27
35K
21.75 mi13:48:592:58:188:126:42
8:57
-1:24
23M
23.00 mi14:04:113:13:308:2515:12
12:08
+3:11
24M
24.00 mi14:13:283:22:478:279:17
9:17
-2:51
40K
24.85 mi14:21:283:30:478:298:00
9:21
+0:04
25.2M
25.20 mi14:24:573:34:168:303:29
10:06
+0:45
Finish
26.22 mi14:34:383:43:578:339:41
9:30
-0:36

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

7:32 /mi

Average Pace

8:33 /mi

Slowest Pace

12:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:16

45% of race

Time at Steady Pace

1:33:39

42% of race

Time at Slower Pace

29:02

13% of race

Average Pace: 8:32 /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 mi11:14:0623:257:3223:25
7:32
#12572
10K
6.21 mi11:38:4648:057:4424:40
7:56
#14224
15K
9.32 mi12:02:171:11:367:4123:31
7:34
#13588
20K
12.43 mi12:26:431:36:027:4424:26
7:52
#13597
Half
13.11 mi12:31:571:41:167:435:14
7:40
#13569
25K
15.53 mi12:52:082:01:277:4920:11
8:19
#14032
30K
18.64 mi13:19:502:29:098:0027:42
8:55
#14743
20M
20.00 mi13:31:562:41:158:0412:06
8:54
#14842
21M
21.00 mi13:42:172:51:368:1010:21
10:21
#15183
35K
21.75 mi13:48:592:58:188:126:42
8:57
#15289
23M
23.00 mi14:04:113:13:308:2515:12
12:08
#16420
24M
24.00 mi14:13:283:22:478:279:17
9:17
#16545
40K
24.85 mi14:21:283:30:478:298:00
9:21
#16609
25.2M
25.20 mi14:24:573:34:168:303:29
10:06
#16640
Finish
26.22 mi14:34:383:43:578:339:41
9:30
#16882
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi125729441944112327(Top 43%)9222(Top 57%)9222(Top 732%)
10K6.21 mi3.10 mi14224-165210111-67010111-67015980(Top 56%)10824(Top 67%)10824(Top 860%)
15K9.32 mi3.11 mi13588+6369809+3029809+30212327(Top 43%)9222(Top 57%)9222(Top 732%)
20K12.43 mi3.11 mi13597-99775+349775+3413790(Top 49%)9777(Top 61%)9777(Top 777%)
Half13.11 mi0.68 mi13569+289762+139762+1313154(Top 46%)9553(Top 59%)9553(Top 759%)
25K15.53 mi2.42 mi14032-4639927-1659927-16516065(Top 57%)10676(Top 66%)10676(Top 848%)
30K18.64 mi3.11 mi14743-71110174-24710174-24717231(Top 61%)11033(Top 69%)11033(Top 876%)
20M20.00 mi1.36 mi14842-9910194-2010194-2016243(Top 57%)10460(Top 65%)10460(Top 831%)
21M21.00 mi1.00 mi15183-34110316-12210316-12219527(Top 69%)11837(Top 73%)11837(Top 940%)
35K21.75 mi0.75 mi15289-10610346-3010346-3017993(Top 63%)11046(Top 69%)11046(Top 877%)
23M23.00 mi1.25 mi16420-113110793-44710793-44725311(Top 89%)14486(Top 90%)14486(Top 1151%)
24M24.00 mi1.00 mi16545-12510816-2310816-2318719(Top 66%)11275(Top 70%)11275(Top 896%)
40K24.85 mi0.85 mi16609-6410810+610810+618081(Top 64%)10870(Top 67%)10870(Top 863%)
25.2M25.20 mi0.35 mi16640-3110808+210808+217423(Top 61%)10563(Top 66%)10563(Top 839%)
Finish26.22 mi1.02 mi16882-24210884-7610884-7621175(Top 75%)12372(Top 77%)12372(Top 983%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12327

Males

9222

M60-64

9222

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

15980

Males

10824

M60-64

10824

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12327

Males

9222

M60-64

9222

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13790

Males

9777

M60-64

9777

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13154

Males

9553

M60-64

9553

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16065

Males

10676

M60-64

10676

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

17231

Males

11033

M60-64

11033

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16243

Males

10460

M60-64

10460

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

19527

Males

11837

M60-64

11837

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

17993

Males

11046

M60-64

11046

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

25311

Males

14486

M60-64

14486

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18719

Males

11275

M60-64

11275

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18081

Males

10870

M60-64

10870

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17423

Males

10563

M60-64

10563

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

21175

Males

12372

M60-64

12372

Passing Analysis

Category:
Athletes Passed
1431
Passed By
5741
Net Change
-4310
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12572
5K → 10K211673-1652#12572#14224
10K → 15K65620+636#14224#13588
15K → 20K187196-9#13588#13597
20K → Half4416+28#13597#13569
Half → 25K77540-463#13569#14032
25K → 30K99810-711#14032#14743
30K → 20M104203-99#14743#14842
20M → 21M42383-341#14842#15183
21M → 35K40146-106#15183#15289
35K → 23M131144-1131#15289#16420
23M → 24M42167-125#16420#16545
24M → 40K57121-64#16545#16609
40K → 25.2M2354-31#16609#16640
25.2M → Finish26268-242#16640#16882
TOTALS14315741-4310
📊

Passing Visuals

Category:
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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