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BOSTON MARATHON 2025

Lawrence Tanzman

Bib: 6035•M

IL

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 18%
Gender (Male)
#0 / 16105
Top 29%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:01
Rank: #3412
Start → 5K
20:01 | 6:27/mi
10K· 6.21 mi
40:16
Rank: #3635 (-223)
5K → 10K
20:15 | 6:31/mi
15K· 9.32 mi
1:00:26
Rank: #3576 (+59)
10K → 15K
20:10 | 6:29/mi
20K· 12.43 mi
1:20:47
Rank: #3509 (+67)
15K → 20K
20:21 | 6:33/mi
Half· 13.11 mi
1:25:17
Rank: #3552 (-43)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:41:57
Rank: #3768 (-216)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:04:16
Rank: #4048 (-280)
25K → 30K
22:19 | 7:11/mi
20M
2:14:31
Rank: #4308 (-260)
30K → 20M
10:15 | 7:33/mi
21M
2:22:19
Rank: #4431 (-123)
20M → 21M
7:48 | 7:48/mi
35K· 21.75 mi
2:27:36
Rank: #4452 (-21)
21M → 35K
5:17 | 7:04/mi
23M
2:36:45
Rank: #4494 (-42)
35K → 23M
9:09 | 7:18/mi
24M
2:44:15
Rank: #4663 (-169)
23M → 24M
7:30 | 7:30/mi
40K· 24.85 mi
2:51:09
Rank: #4923 (-260)
24M → 40K
6:54 | 8:04/mi
25.2M
2:54:16
Rank: #5017 (-94)
40K → 25.2M
3:07 | 9:02/mi
Finish· 26.22 mi
3:02:32
Rank: #5221 (-204)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:17
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:37:15
Pace7:25 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:5020:016:2720:01
6:27
-
10K
6.21 mi10:46:0540:166:2920:15
6:31
+0:04
15K
9.32 mi11:06:151:00:266:2920:10
6:29
-0:02
20K
12.43 mi11:26:361:20:476:3020:21
6:33
+0:04
Half
13.11 mi11:31:061:25:176:304:30
6:36
+0:03
25K
15.53 mi11:47:461:41:576:3416:40
6:52
+0:16
30K
18.64 mi12:10:052:04:166:4022:19
7:11
+0:19
20M
20.00 mi12:20:202:14:316:4410:15
7:33
+0:22
21M
21.00 mi12:28:082:22:196:477:48
7:48
+0:15
35K
21.75 mi12:33:252:27:366:475:17
7:04
-0:44
23M
23.00 mi12:42:342:36:456:499:09
7:18
+0:14
24M
24.00 mi12:50:042:44:156:517:30
7:30
+0:12
40K
24.85 mi12:56:582:51:096:536:54
8:04
+0:34
25.2M
25.20 mi13:00:052:54:166:553:07
9:02
+0:58
Finish
26.22 mi13:08:213:02:326:588:16
8:07
-0:55

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

6:27 /mi

Average Pace

6:58 /mi

Slowest Pace

9:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:17

47% of race

Time at Steady Pace

1:00:55

33% of race

Time at Slower Pace

36:20

20% of race

Average Pace: 6:58 /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 mi10:25:5020:016:2720:01
6:27
#3412
10K
6.21 mi10:46:0540:166:2920:15
6:31
#3635
15K
9.32 mi11:06:151:00:266:2920:10
6:29
#3576
20K
12.43 mi11:26:361:20:476:3020:21
6:33
#3509
Half
13.11 mi11:31:061:25:176:304:30
6:36
#3552
25K
15.53 mi11:47:461:41:576:3416:40
6:52
#3768
30K
18.64 mi12:10:052:04:166:4022:19
7:11
#4048
20M
20.00 mi12:20:202:14:316:4410:15
7:33
#4308
21M
21.00 mi12:28:082:22:196:477:48
7:48
#4431
35K
21.75 mi12:33:252:27:366:475:17
7:04
#4452
23M
23.00 mi12:42:342:36:456:499:09
7:18
#4494
24M
24.00 mi12:50:042:44:156:517:30
7:30
#4663
40K
24.85 mi12:56:582:51:096:536:54
8:04
#4923
25.2M
25.20 mi13:00:052:54:166:553:07
9:02
#5017
Finish
26.22 mi13:08:213:02:326:588:16
8:07
#5221
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3412324132413509(Top 12%)3320(Top 21%)3320(Top 59%)
10K6.21 mi3.10 mi3635-2233446-2053446-2053865(Top 14%)3642(Top 23%)3642(Top 65%)
15K9.32 mi3.11 mi3576+593389+573389+573509(Top 12%)3320(Top 21%)3320(Top 59%)
20K12.43 mi3.11 mi3509+673326+633326+633408(Top 12%)3227(Top 20%)3227(Top 57%)
Half13.11 mi0.68 mi3552-433365-393365-394356(Top 15%)4078(Top 25%)4078(Top 72%)
25K15.53 mi2.42 mi3768-2163553-1883553-1885451(Top 19%)4955(Top 31%)4955(Top 88%)
30K18.64 mi3.11 mi4048-2803798-2453798-2455797(Top 20%)5159(Top 32%)5159(Top 91%)
20M20.00 mi1.36 mi4308-2604024-2264024-2267257(Top 26%)5981(Top 37%)5981(Top 106%)
21M21.00 mi1.00 mi4431-1234113-894113-896154(Top 22%)5155(Top 32%)5155(Top 91%)
35K21.75 mi0.75 mi4452-214127-144127-145728(Top 20%)4864(Top 30%)4864(Top 86%)
23M23.00 mi1.25 mi4494-424153-264153-265496(Top 19%)4659(Top 29%)4659(Top 83%)
24M24.00 mi1.00 mi4663-1694288-1354288-1357634(Top 27%)5882(Top 37%)5882(Top 104%)
40K24.85 mi0.85 mi4923-2604498-2104498-21010624(Top 37%)7352(Top 46%)7352(Top 130%)
25.2M25.20 mi0.35 mi5017-944574-764574-7611894(Top 42%)7905(Top 49%)7905(Top 140%)
Finish26.22 mi1.02 mi5221-2044733-1594733-15913620(Top 48%)8809(Top 55%)8809(Top 156%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3509

Males

3320

M18-39

3320

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3865

Males

3642

M18-39

3642

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3509

Males

3320

M18-39

3320

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3408

Males

3227

M18-39

3227

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4356

Males

4078

M18-39

4078

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5451

Males

4955

M18-39

4955

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5797

Males

5159

M18-39

5159

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7257

Males

5981

M18-39

5981

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

6154

Males

5155

M18-39

5155

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5728

Males

4864

M18-39

4864

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5496

Males

4659

M18-39

4659

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7634

Males

5882

M18-39

5882

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10624

Males

7352

M18-39

7352

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11894

Males

7905

M18-39

7905

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13620

Males

8809

M18-39

8809

Passing Analysis

Category:
Athletes Passed
601
Passed By
2410
Net Change
-1809
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3412
5K → 10K42265-223#3412#3635
10K → 15K13071+59#3635#3576
15K → 20K13265+67#3576#3509
20K → Half346-43#3509#3552
Half → 25K32248-216#3552#3768
25K → 30K48328-280#3768#4048
30K → 20M20280-260#4048#4308
20M → 21M35158-123#4308#4431
21M → 35K4263-21#4431#4452
35K → 23M59101-42#4452#4494
23M → 24M28197-169#4494#4663
24M → 40K17277-260#4663#4923
40K → 25.2M6100-94#4923#5017
25.2M → Finish7211-204#5017#5221
TOTALS6012410-1809
📊

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