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BOSTON MARATHON 2025

Chee Kian Chan

Bib: 7351•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 28%
Masters (Masters Men)
#0 / 10463
Top 14%
Division (M45-49)
#0 / 2386
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:54
Rank: #5673
Start → 5K
20:54 | 6:44/mi
10K· 6.21 mi
41:54
Rank: #5767 (-94)
5K → 10K
21:00 | 6:46/mi
15K· 9.32 mi
1:03:07
Rank: #5917 (-150)
10K → 15K
21:13 | 6:50/mi
20K· 12.43 mi
1:24:24
Rank: #5857 (+60)
15K → 20K
21:17 | 6:51/mi
Half· 13.11 mi
1:28:57
Rank: #5814 (+43)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:45:32
Rank: #5658 (+156)
Half → 25K
16:35 | 6:50/mi
30K· 18.64 mi
2:07:34
Rank: #5534 (+124)
25K → 30K
22:02 | 7:06/mi
20M
2:17:18
Rank: #5491 (+43)
30K → 20M
9:44 | 7:10/mi
21M
2:24:43
Rank: #5364 (+127)
20M → 21M
7:25 | 7:25/mi
35K· 21.75 mi
2:29:50
Rank: #5301 (+63)
21M → 35K
5:07 | 6:50/mi
23M
2:38:34
Rank: #5151 (+150)
35K → 23M
8:44 | 6:59/mi
24M
2:45:24
Rank: #5061 (+90)
23M → 24M
6:50 | 6:50/mi
40K· 24.85 mi
2:51:18
Rank: #4967 (+94)
24M → 40K
5:54 | 6:54/mi
25.2M
2:54:00
Rank: #4950 (+17)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
3:01:15
Rank: #4966 (-16)
25.2M → Finish
7:15 | 7:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:57
Pace6:47 /mi
2nd Half
Distance13.11 mi
Time1:32:18
Pace7:02 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:2520:546:4420:54
6:44
-
10K
6.21 mi10:47:2541:546:4521:00
6:46
+0:02
15K
9.32 mi11:08:381:03:076:4621:13
6:50
+0:04
20K
12.43 mi11:29:551:24:246:4721:17
6:51
+0:01
Half
13.11 mi11:34:281:28:576:474:33
6:40
-0:11
25K
15.53 mi11:51:031:45:326:4816:35
6:50
+0:10
30K
18.64 mi12:13:052:07:346:5122:02
7:06
+0:16
20M
20.00 mi12:22:492:17:186:529:44
7:10
+0:04
21M
21.00 mi12:30:142:24:436:537:25
7:25
+0:15
35K
21.75 mi12:35:212:29:506:535:07
6:50
-0:35
23M
23.00 mi12:44:052:38:346:548:44
6:59
+0:09
24M
24.00 mi12:50:552:45:246:546:50
6:50
-0:09
40K
24.85 mi12:56:492:51:186:545:54
6:54
+0:04
25.2M
25.20 mi12:59:312:54:006:542:42
7:50
+0:56
Finish
26.22 mi13:06:463:01:156:557:15
7:07
-0:43

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

6:40 /mi

Average Pace

6:55 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:51:08

94% of race

Time at Steady Pace

10:07

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /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 mi10:26:2520:546:4420:54
6:44
#5673
10K
6.21 mi10:47:2541:546:4521:00
6:46
#5767
15K
9.32 mi11:08:381:03:076:4621:13
6:50
#5917
20K
12.43 mi11:29:551:24:246:4721:17
6:51
#5857
Half
13.11 mi11:34:281:28:576:474:33
6:40
#5814
25K
15.53 mi11:51:031:45:326:4816:35
6:50
#5658
30K
18.64 mi12:13:052:07:346:5122:02
7:06
#5534
20M
20.00 mi12:22:492:17:186:529:44
7:10
#5491
21M
21.00 mi12:30:142:24:436:537:25
7:25
#5364
35K
21.75 mi12:35:212:29:506:535:07
6:50
#5301
23M
23.00 mi12:44:052:38:346:548:44
6:59
#5151
24M
24.00 mi12:50:552:45:246:546:50
6:50
#5061
40K
24.85 mi12:56:492:51:186:545:54
6:54
#4967
25.2M
25.20 mi12:59:312:54:006:542:42
7:50
#4950
Finish
26.22 mi13:06:463:01:156:557:15
7:07
#4966
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5673524052406362(Top 22%)5754(Top 36%)5754(Top 241%)
10K6.21 mi3.10 mi5767-945318-785318-785931(Top 21%)5425(Top 34%)5425(Top 227%)
15K9.32 mi3.11 mi5917-1505426-1085426-1086362(Top 22%)5754(Top 36%)5754(Top 241%)
20K12.43 mi3.11 mi5857+605369+575369+575768(Top 20%)5250(Top 33%)5250(Top 220%)
Half13.11 mi0.68 mi5814+435329+405329+404969(Top 17%)4598(Top 29%)4598(Top 193%)
25K15.53 mi2.42 mi5658+1565193+1365193+1365181(Top 18%)4747(Top 29%)4747(Top 199%)
30K18.64 mi3.11 mi5534+1245063+1305063+1305259(Top 19%)4744(Top 29%)4744(Top 199%)
20M20.00 mi1.36 mi5491+435020+435020+434980(Top 18%)4465(Top 28%)4465(Top 187%)
21M21.00 mi1.00 mi5364+1274903+1174903+1174185(Top 15%)3764(Top 23%)3764(Top 158%)
35K21.75 mi0.75 mi5301+634847+564847+564328(Top 15%)3857(Top 24%)3857(Top 162%)
23M23.00 mi1.25 mi5151+1504711+1364711+1363609(Top 13%)3265(Top 20%)3265(Top 137%)
24M24.00 mi1.00 mi5061+904623+884623+883698(Top 13%)3294(Top 20%)3294(Top 138%)
40K24.85 mi0.85 mi4967+944536+874536+873346(Top 12%)2988(Top 19%)2988(Top 125%)
25.2M25.20 mi0.35 mi4950+174517+194517+194958(Top 17%)4075(Top 25%)4075(Top 171%)
Finish26.22 mi1.02 mi4966-164519-24519-26432(Top 23%)4990(Top 31%)4990(Top 209%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 22%
×21stories
+97ft-345ft

Overall

6362

Males

5754

M45-49

5754

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5931

Males

5425

M45-49

5425

10K→15K

6.2 - 9.3 mi

Top 22%
×3stories
+67ft-78ft

Overall

6362

Males

5754

M45-49

5754

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5768

Males

5250

M45-49

5250

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4969

Males

4598

M45-49

4598

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

5181

Males

4747

M45-49

4747

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5259

Males

4744

M45-49

4744

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4980

Males

4465

M45-49

4465

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4185

Males

3764

M45-49

3764

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

4328

Males

3857

M45-49

3857

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3609

Males

3265

M45-49

3265

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3698

Males

3294

M45-49

3294

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3346

Males

2988

M45-49

2988

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4958

Males

4075

M45-49

4075

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6432

Males

4990

M45-49

4990

Passing Analysis

Category:
Athletes Passed
1609
Passed By
902
Net Change
+707
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5673
5K → 10K134228-94#5673#5767
10K → 15K82232-150#5767#5917
15K → 20K15797+60#5917#5857
20K → Half518+43#5857#5814
Half → 25K19640+156#5814#5658
25K → 30K236112+124#5658#5534
30K → 20M9249+43#5534#5491
20M → 21M14518+127#5491#5364
21M → 35K7714+63#5364#5301
35K → 23M16414+150#5301#5151
23M → 24M10313+90#5151#5061
24M → 40K1006+94#5061#4967
40K → 25.2M3518+17#4967#4950
25.2M → Finish3753-16#4950#4966
TOTALS1609902+707
📊

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