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BOSTON MARATHON 2025

Albert Lew

Bib: 28805•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 34%
Gender (Male)
#0 / 16105
Top 47%
Masters (Masters Men)
#0 / 10463
Top 35%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:44
Rank: #7781
Start → 5K
21:44 | 7:00/mi
10K· 6.21 mi
43:16
Rank: #7615 (+166)
5K → 10K
21:32 | 6:56/mi
15K· 9.32 mi
1:05:28
Rank: #7927 (-312)
10K → 15K
22:12 | 7:09/mi
20K· 12.43 mi
1:27:54
Rank: #7981 (-54)
15K → 20K
22:26 | 7:13/mi
Half· 13.11 mi
1:32:42
Rank: #7969 (+12)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:50:42
Rank: #8111 (-142)
Half → 25K
18:00 | 7:25/mi
30K· 18.64 mi
2:14:45
Rank: #8241 (-130)
25K → 30K
24:03 | 7:44/mi
20M
2:25:50
Rank: #8464 (-223)
30K → 20M
11:05 | 8:09/mi
21M
2:34:35
Rank: #8652 (-188)
20M → 21M
8:45 | 8:45/mi
35K· 21.75 mi
2:40:32
Rank: #8756 (-104)
21M → 35K
5:57 | 7:57/mi
23M
2:51:14
Rank: #9037 (-281)
35K → 23M
10:42 | 8:33/mi
24M
2:59:24
Rank: #9175 (-138)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:06:32
Rank: #9284 (-109)
24M → 40K
7:08 | 8:21/mi
25.2M
3:09:53
Rank: #9391 (-107)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:18:22
Rank: #9630 (-239)
25.2M → Finish
8:29 | 8:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:42
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:45:40
Pace8:04 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:0321:447:0021:44
7:00
-
10K
6.21 mi12:02:3543:166:5821:32
6:56
-0:04
15K
9.32 mi12:24:471:05:287:0122:12
7:09
+0:13
20K
12.43 mi12:47:131:27:547:0422:26
7:13
+0:04
Half
13.11 mi12:52:011:32:427:044:48
7:02
-0:11
25K
15.53 mi13:10:011:50:427:0818:00
7:25
+0:23
30K
18.64 mi13:34:042:14:457:1424:03
7:44
+0:19
20M
20.00 mi13:45:092:25:507:1711:05
8:09
+0:25
21M
21.00 mi13:53:542:34:357:228:45
8:45
+0:36
35K
21.75 mi13:59:512:40:327:235:57
7:57
-0:48
23M
23.00 mi14:10:332:51:147:2710:42
8:33
+0:36
24M
24.00 mi14:18:432:59:247:298:10
8:10
-0:23
40K
24.85 mi14:25:513:06:327:307:08
8:21
+0:11
25.2M
25.20 mi14:29:123:09:537:323:21
9:43
+1:22
Finish
26.22 mi14:37:413:18:227:348:29
8:19
-1:24

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

6:56 /mi

Average Pace

7:34 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:42

56% of race

Time at Steady Pace

57:44

29% of race

Time at Slower Pace

29:56

15% of race

Average Pace: 7:34 /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 mi11:41:0321:447:0021:44
7:00
#7781
10K
6.21 mi12:02:3543:166:5821:32
6:56
#7615
15K
9.32 mi12:24:471:05:287:0122:12
7:09
#7927
20K
12.43 mi12:47:131:27:547:0422:26
7:13
#7981
Half
13.11 mi12:52:011:32:427:044:48
7:02
#7969
25K
15.53 mi13:10:011:50:427:0818:00
7:25
#8111
30K
18.64 mi13:34:042:14:457:1424:03
7:44
#8241
20M
20.00 mi13:45:092:25:507:1711:05
8:09
#8464
21M
21.00 mi13:53:542:34:357:228:45
8:45
#8652
35K
21.75 mi13:59:512:40:327:235:57
7:57
#8756
23M
23.00 mi14:10:332:51:147:2710:42
8:33
#9037
24M
24.00 mi14:18:432:59:247:298:10
8:10
#9175
40K
24.85 mi14:25:513:06:327:307:08
8:21
#9284
25.2M
25.20 mi14:29:123:09:537:323:21
9:43
#9391
Finish
26.22 mi14:37:413:18:227:348:29
8:19
#9630
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi7781685668568668(Top 31%)7354(Top 46%)7354(Top 327%)
10K6.21 mi3.10 mi7615+1666733+1236733+1237480(Top 26%)6627(Top 41%)6627(Top 295%)
15K9.32 mi3.11 mi7927-3126936-2036936-2038668(Top 31%)7354(Top 46%)7354(Top 327%)
20K12.43 mi3.11 mi7981-546941-56941-58378(Top 29%)7099(Top 44%)7099(Top 316%)
Half13.11 mi0.68 mi7969+126933+86933+87836(Top 28%)6798(Top 42%)6798(Top 303%)
25K15.53 mi2.42 mi8111-1426994-616994-619329(Top 33%)7520(Top 47%)7520(Top 335%)
30K18.64 mi3.11 mi8241-1307023-297023-299480(Top 33%)7418(Top 46%)7418(Top 330%)
20M20.00 mi1.36 mi8464-2237128-1057128-10511473(Top 40%)8262(Top 51%)8262(Top 368%)
21M21.00 mi1.00 mi8652-1887197-697197-6911946(Top 42%)8342(Top 52%)8342(Top 371%)
35K21.75 mi0.75 mi8756-1047242-457242-4511885(Top 42%)8255(Top 51%)8255(Top 367%)
23M23.00 mi1.25 mi9037-2817355-1137355-11313572(Top 48%)8964(Top 56%)8964(Top 399%)
24M24.00 mi1.00 mi9175-1387409-547409-5412312(Top 43%)8320(Top 52%)8320(Top 370%)
40K24.85 mi0.85 mi9284-1097426-177426-1712376(Top 44%)8216(Top 51%)8216(Top 366%)
25.2M25.20 mi0.35 mi9391-1077466-407466-4015589(Top 55%)9655(Top 60%)9655(Top 430%)
Finish26.22 mi1.02 mi9630-2397546-807546-8015033(Top 53%)9483(Top 59%)9483(Top 422%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21stories
+97ft-345ft

Overall

8668

Males

7354

M40-44

7354

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7480

Males

6627

M40-44

6627

10K→15K

6.2 - 9.3 mi

Top 31%
×3stories
+67ft-78ft

Overall

8668

Males

7354

M40-44

7354

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8378

Males

7099

M40-44

7099

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7836

Males

6798

M40-44

6798

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

9329

Males

7520

M40-44

7520

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

9480

Males

7418

M40-44

7418

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

11473

Males

8262

M40-44

8262

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11946

Males

8342

M40-44

8342

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11885

Males

8255

M40-44

8255

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

13572

Males

8964

M40-44

8964

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12312

Males

8320

M40-44

8320

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

12376

Males

8216

M40-44

8216

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15589

Males

9655

M40-44

9655

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

15033

Males

9483

M40-44

9483

Passing Analysis

Category:
Athletes Passed
1036
Passed By
2885
Net Change
-1849
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7781
5K → 10K283117+166#7781#7615
10K → 15K62374-312#7615#7927
15K → 20K113167-54#7927#7981
20K → Half3321+12#7981#7969
Half → 25K91233-142#7969#8111
25K → 30K148278-130#8111#8241
30K → 20M47270-223#8241#8464
20M → 21M47235-188#8464#8652
21M → 35K30134-104#8652#8756
35K → 23M56337-281#8756#9037
23M → 24M38176-138#9037#9175
24M → 40K54163-109#9175#9284
40K → 25.2M11118-107#9284#9391
25.2M → Finish23262-239#9391#9630
TOTALS10362885-1849
📊

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