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BOSTON MARATHON 2025

Kian Wei Lim

Bib: 12356•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 29%
Gender (Male)
#0 / 16105
Top 42%
Masters (Masters Men)
#0 / 10463
Top 30%
Division (M45-49)
#0 / 2386
Top 42%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:52
Rank: #10925
Start → 5K
22:52 | 7:22/mi
10K· 6.21 mi
44:53
Rank: #9651 (+1274)
5K → 10K
22:01 | 7:05/mi
15K· 9.32 mi
1:06:50
Rank: #9065 (+586)
10K → 15K
21:57 | 7:04/mi
20K· 12.43 mi
1:29:19
Rank: #8862 (+203)
15K → 20K
22:29 | 7:14/mi
Half· 13.11 mi
1:34:01
Rank: #8717 (+145)
20K → Half
4:42 | 6:53/mi
25K· 15.53 mi
1:51:07
Rank: #8310 (+407)
Half → 25K
17:06 | 7:03/mi
30K· 18.64 mi
2:14:26
Rank: #8119 (+191)
25K → 30K
23:19 | 7:30/mi
20M
2:24:34
Rank: #7961 (+158)
30K → 20M
10:08 | 7:27/mi
21M
2:32:38
Rank: #7874 (+87)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:38:38
Rank: #8017 (-143)
21M → 35K
6:00 | 8:01/mi
23M
2:49:00
Rank: #8210 (-193)
35K → 23M
10:22 | 8:17/mi
24M
2:56:44
Rank: #8211 (-1)
23M → 24M
7:44 | 7:44/mi
40K· 24.85 mi
3:03:46
Rank: #8306 (-95)
24M → 40K
7:02 | 8:14/mi
25.2M
3:06:36
Rank: #8266 (+40)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:14:04
Rank: #8243 (+23)
25.2M → Finish
7:28 | 7:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:01
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:40:03
Pace7:38 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1422:527:2222:52
7:22
-
10K
6.21 mi11:12:1544:537:1322:01
7:05
-0:17
15K
9.32 mi11:34:121:06:507:1021:57
7:04
-0:01
20K
12.43 mi11:56:411:29:197:1122:29
7:14
+0:10
Half
13.11 mi12:01:231:34:017:104:42
6:53
-0:21
25K
15.53 mi12:18:291:51:077:0917:06
7:03
+0:10
30K
18.64 mi12:41:482:14:267:1323:19
7:30
+0:27
20M
20.00 mi12:51:562:24:347:1410:08
7:27
-0:03
21M
21.00 mi13:00:002:32:387:168:04
8:04
+0:37
35K
21.75 mi13:06:002:38:387:186:00
8:01
-0:03
23M
23.00 mi13:16:222:49:007:2110:22
8:17
+0:16
24M
24.00 mi13:24:062:56:447:227:44
7:44
-0:33
40K
24.85 mi13:31:083:03:467:247:02
8:14
+0:30
25.2M
25.20 mi13:33:583:06:367:242:50
8:13
-0:01
Finish
26.22 mi13:41:263:14:047:247:28
7:20
-0:53

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

6:53 /mi

Average Pace

7:24 /mi

Slowest Pace

8:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:46

34% of race

Time at Steady Pace

1:26:16

44% of race

Time at Slower Pace

42:02

22% of race

Average Pace: 7:24 /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 mi10:50:1422:527:2222:52
7:22
#10925
10K
6.21 mi11:12:1544:537:1322:01
7:05
#9651
15K
9.32 mi11:34:121:06:507:1021:57
7:04
#9065
20K
12.43 mi11:56:411:29:197:1122:29
7:14
#8862
Half
13.11 mi12:01:231:34:017:104:42
6:53
#8717
25K
15.53 mi12:18:291:51:077:0917:06
7:03
#8310
30K
18.64 mi12:41:482:14:267:1323:19
7:30
#8119
20M
20.00 mi12:51:562:24:347:1410:08
7:27
#7961
21M
21.00 mi13:00:002:32:387:168:04
8:04
#7874
35K
21.75 mi13:06:002:38:387:186:00
8:01
#8017
23M
23.00 mi13:16:222:49:007:2110:22
8:17
#8210
24M
24.00 mi13:24:062:56:447:227:44
7:44
#8211
40K
24.85 mi13:31:083:03:467:247:02
8:14
#8306
25.2M
25.20 mi13:33:583:06:367:242:50
8:13
#8266
Finish
26.22 mi13:41:263:14:047:247:28
7:20
#8243
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10925865086508073(Top 28%)6993(Top 43%)6993(Top 293%)
10K6.21 mi3.10 mi9651+12747985+6657985+6658547(Top 30%)7331(Top 46%)7331(Top 307%)
15K9.32 mi3.11 mi9065+5867617+3687617+3688073(Top 28%)6993(Top 43%)6993(Top 293%)
20K12.43 mi3.11 mi8862+2037482+1357482+1358498(Top 30%)7160(Top 44%)7160(Top 300%)
Half13.11 mi0.68 mi8717+1457386+967386+966831(Top 24%)6096(Top 38%)6096(Top 255%)
25K15.53 mi2.42 mi8310+4077119+2677119+2676660(Top 23%)5876(Top 36%)5876(Top 246%)
30K18.64 mi3.11 mi8119+1916939+1806939+1807775(Top 27%)6456(Top 40%)6456(Top 271%)
20M20.00 mi1.36 mi7961+1586807+1326807+1326739(Top 24%)5680(Top 35%)5680(Top 238%)
21M21.00 mi1.00 mi7874+876726+816726+817725(Top 27%)6108(Top 38%)6108(Top 256%)
35K21.75 mi0.75 mi8017-1436794-686794-6812333(Top 43%)8468(Top 53%)8468(Top 355%)
23M23.00 mi1.25 mi8210-1936875-816875-8111893(Top 42%)8175(Top 51%)8175(Top 343%)
24M24.00 mi1.00 mi8211-16836+396836+399306(Top 33%)6800(Top 42%)6800(Top 285%)
40K24.85 mi0.85 mi8306-956862-266862-2611676(Top 41%)7892(Top 49%)7892(Top 331%)
25.2M25.20 mi0.35 mi8266+406826+366826+367124(Top 25%)5414(Top 34%)5414(Top 227%)
Finish26.22 mi1.02 mi8243+236773+536773+537945(Top 28%)5879(Top 37%)5879(Top 246%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8073

Males

6993

M45-49

6993

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8547

Males

7331

M45-49

7331

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8073

Males

6993

M45-49

6993

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8498

Males

7160

M45-49

7160

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6831

Males

6096

M45-49

6096

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6660

Males

5876

M45-49

5876

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7775

Males

6456

M45-49

6456

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6739

Males

5680

M45-49

5680

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7725

Males

6108

M45-49

6108

21M→35K

21.0 - 21.8 mi

Top 43%
×7stories
+17ft-86ft

Overall

12333

Males

8468

M45-49

8468

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11893

Males

8175

M45-49

8175

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

9306

Males

6800

M45-49

6800

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11676

Males

7892

M45-49

7892

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7124

Males

5414

M45-49

5414

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7945

Males

5879

M45-49

5879

Passing Analysis

Category:
Athletes Passed
3653*
Passed By
971
Net Change
+2682
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10925
5K → 10K1287*13+1274#10925#9651
10K → 15K5959+586#9651#9065
15K → 20K26663+203#9065#8862
20K → Half1450+145#8862#8717
Half → 25K4114+407#8717#8310
25K → 30K28796+191#8310#8119
30K → 20M18123+158#8119#7961
20M → 21M14154+87#7961#7874
21M → 35K26169-143#7874#8017
35K → 23M57250-193#8017#8210
23M → 24M8384-1#8210#8211
24M → 40K45140-95#8211#8306
40K → 25.2M444+40#8306#8266
25.2M → Finish8562+23#8266#8243
TOTALS3653*971+2682

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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