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BOSTON MARATHON 2025

Nickolaus Lachman

Bib: 651•M

NJ

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 25%
Gender (Male)
#0 / 16105
Top 38%
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
18:08
Rank: #689
Start → 5K
18:08 | 5:50/mi
10K· 6.21 mi
36:10
Rank: #636 (+53)
5K → 10K
18:02 | 5:48/mi
15K· 9.32 mi
54:19
Rank: #618 (+18)
10K → 15K
18:09 | 5:51/mi
20K· 12.43 mi
1:12:48
Rank: #632 (-14)
15K → 20K
18:29 | 5:57/mi
Half· 13.11 mi
1:16:52
Rank: #647 (-15)
20K → Half
4:04 | 5:58/mi
25K· 15.53 mi
1:31:45
Rank: #713 (-66)
Half → 25K
14:53 | 6:08/mi
30K· 18.64 mi
1:52:56
Rank: #989 (-276)
25K → 30K
21:11 | 6:49/mi
20M
2:04:58
Rank: #1590 (-601)
30K → 20M
12:02 | 8:51/mi
21M
2:14:56
Rank: #2271 (-681)
20M → 21M
9:58 | 9:58/mi
35K· 21.75 mi
2:21:46
Rank: #2752 (-481)
21M → 35K
6:50 | 9:08/mi
23M
2:34:53
Rank: #3908 (-1156)
35K → 23M
13:07 | 10:29/mi
24M
2:43:57
Rank: #4556 (-648)
23M → 24M
9:04 | 9:04/mi
40K· 24.85 mi
2:53:00
Rank: #5352 (-796)
24M → 40K
9:03 | 10:35/mi
25.2M
2:58:31
Rank: #5978 (-626)
40K → 25.2M
5:31 | 16:00/mi
Finish· 26.22 mi
3:10:15
Rank: #7126 (-1148)
25.2M → Finish
11:44 | 11:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:16:52
Pace5:52 /mi
2nd Half
Distance13.11 mi
Time1:53:23
Pace8:39 /mi
📊Positive Split: 47.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:1918:085:5018:08
5:50
-
10K
6.21 mi10:36:2136:105:4918:02
5:48
-0:02
15K
9.32 mi10:54:3054:195:5018:09
5:51
+0:03
20K
12.43 mi11:12:591:12:485:5118:29
5:57
+0:06
Half
13.11 mi11:17:031:16:525:524:04
5:58
+0:01
25K
15.53 mi11:31:561:31:455:5414:53
6:08
+0:10
30K
18.64 mi11:53:071:52:566:0321:11
6:49
+0:41
20M
20.00 mi12:05:092:04:586:1512:02
8:51
+2:02
21M
21.00 mi12:15:072:14:566:269:58
9:58
+1:07
35K
21.75 mi12:21:572:21:466:316:50
9:08
-0:50
23M
23.00 mi12:35:042:34:536:4413:07
10:29
+1:21
24M
24.00 mi12:44:082:43:576:509:04
9:04
-1:25
40K
24.85 mi12:53:112:53:006:589:03
10:35
+1:31
25.2M
25.20 mi12:58:422:58:317:055:31
16:00
+5:25
Finish
26.22 mi13:10:263:10:157:1611:44
11:31
-4:29

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

5:48 /mi

Average Pace

7:16 /mi

Slowest Pace

16:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:56

59% of race

Time at Steady Pace

37:54

20% of race

Time at Slower Pace

39:25

21% of race

Average Pace: 7:15 /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 mi10:18:1918:085:5018:08
5:50
#689
10K
6.21 mi10:36:2136:105:4918:02
5:48
#636
15K
9.32 mi10:54:3054:195:5018:09
5:51
#618
20K
12.43 mi11:12:591:12:485:5118:29
5:57
#632
Half
13.11 mi11:17:031:16:525:524:04
5:58
#647
25K
15.53 mi11:31:561:31:455:5414:53
6:08
#713
30K
18.64 mi11:53:071:52:566:0321:11
6:49
#989
20M
20.00 mi12:05:092:04:586:1512:02
8:51
#1590
21M
21.00 mi12:15:072:14:566:269:58
9:58
#2271
35K
21.75 mi12:21:572:21:466:316:50
9:08
#2752
23M
23.00 mi12:35:042:34:536:4413:07
10:29
#3908
24M
24.00 mi12:44:082:43:576:509:04
9:04
#4556
40K
24.85 mi12:53:112:53:006:589:03
10:35
#5352
25.2M
25.20 mi12:58:422:58:317:055:31
16:00
#5978
Finish
26.22 mi13:10:263:10:157:1611:44
11:31
#7126
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi689642642620(Top 2%)577(Top 4%)577(Top 10%)
10K6.21 mi3.10 mi636+53590+52590+52618(Top 2%)578(Top 4%)578(Top 10%)
15K9.32 mi3.11 mi618+18573+17573+17620(Top 2%)577(Top 4%)577(Top 10%)
20K12.43 mi3.11 mi632-14585-12585-12748(Top 3%)700(Top 4%)700(Top 12%)
Half13.11 mi0.68 mi647-15600-15600-151047(Top 4%)994(Top 6%)994(Top 18%)
25K15.53 mi2.42 mi713-66665-65665-651249(Top 4%)1182(Top 7%)1182(Top 21%)
30K18.64 mi3.11 mi989-276932-267932-2673559(Top 13%)3304(Top 21%)3304(Top 59%)
20M20.00 mi1.36 mi1590-6011506-5741506-57415942(Top 56%)10335(Top 64%)10335(Top 183%)
21M21.00 mi1.00 mi2271-6812166-6602166-66018144(Top 64%)11218(Top 70%)11218(Top 199%)
35K21.75 mi0.75 mi2752-4812618-4522618-45218835(Top 66%)11404(Top 71%)11404(Top 202%)
23M23.00 mi1.25 mi3908-11563647-10293647-102921941(Top 77%)12848(Top 80%)12848(Top 228%)
24M24.00 mi1.00 mi4556-6484196-5494196-54917659(Top 62%)10756(Top 67%)10756(Top 191%)
40K24.85 mi0.85 mi5352-7964852-6564852-65622129(Top 78%)12797(Top 79%)12797(Top 227%)
25.2M25.20 mi0.35 mi5978-6265326-4745326-47427702(Top 98%)15648(Top 97%)15648(Top 277%)
Finish26.22 mi1.02 mi7126-11486080-7546080-75426147(Top 92%)14859(Top 92%)14859(Top 263%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

620

Males

577

M18-39

577

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

618

Males

578

M18-39

578

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

620

Males

577

M18-39

577

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

748

Males

700

M18-39

700

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1047

Males

994

M18-39

994

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1249

Males

1182

M18-39

1182

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3559

Males

3304

M18-39

3304

30K→20M

18.6 - 20.0 mi

Top 56%
×5stories
+64ft-50ft

Overall

15942

Males

10335

M18-39

10335

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

18144

Males

11218

M18-39

11218

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

18835

Males

11404

M18-39

11404

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

21941

Males

12848

M18-39

12848

23M→24M

23.0 - 24.0 mi

Top 62%
×6stories
+12ft-82ft

Overall

17659

Males

10756

M18-39

10756

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22129

Males

12797

M18-39

12797

40K→25.2M

24.9 - 25.2 mi

Top 98%
×1story
+13ft-16ft

Overall

27702

Males

15648

M18-39

15648

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

26147

Males

14859

M18-39

14859

Passing Analysis

Category:
Athletes Passed
146
Passed By
6583
Net Change
-6437
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#689
5K → 10K6310+53#689#636
10K → 15K268+18#636#618
15K → 20K2337-14#618#632
20K → Half116-15#632#647
Half → 25K1076-66#647#713
25K → 30K2278-276#713#989
30K → 20M1602-601#989#1590
20M → 21M2683-681#1590#2271
21M → 35K2483-481#2271#2752
35K → 23M31159-1156#2752#3908
23M → 24M6654-648#3908#4556
24M → 40K5801-796#4556#5352
40K → 25.2M1627-626#5352#5978
25.2M → Finish11149-1148#5978#7126
TOTALS1466583-6437
📊

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