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BOSTON MARATHON 2025

Nicholas Gregory

Bib: 4546•M

NH

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Division (M18-39)
#0 / 5642
Top 43%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:00
Rank: #3379
Start → 5K
20:00 | 6:26/mi
10K· 6.21 mi
39:53
Rank: #3196 (+183)
5K → 10K
19:53 | 6:24/mi
15K· 9.32 mi
59:34
Rank: #2947 (+249)
10K → 15K
19:41 | 6:20/mi
20K· 12.43 mi
1:19:35
Rank: #2874 (+73)
15K → 20K
20:01 | 6:27/mi
Half· 13.11 mi
1:23:55
Rank: #2873 (+1)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:39:52
Rank: #2927 (-54)
Half → 25K
15:57 | 6:35/mi
30K· 18.64 mi
2:01:25
Rank: #3119 (-192)
25K → 30K
21:33 | 6:56/mi
20M
2:11:12
Rank: #3207 (-88)
30K → 20M
9:47 | 7:12/mi
21M
2:18:52
Rank: #3318 (-111)
20M → 21M
7:40 | 7:40/mi
35K· 21.75 mi
2:23:55
Rank: #3312 (+6)
21M → 35K
5:03 | 6:45/mi
23M
2:32:42
Rank: #3292 (+20)
35K → 23M
8:47 | 7:01/mi
24M
2:39:36
Rank: #3278 (+14)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:45:45
Rank: #3311 (-33)
24M → 40K
6:09 | 7:12/mi
25.2M
2:48:28
Rank: #3331 (-20)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
2:55:31
Rank: #3362 (-31)
25.2M → Finish
7:03 | 6:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:55
Pace6:24 /mi
2nd Half
Distance13.11 mi
Time1:31:36
Pace6:59 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2220:006:2620:00
6:26
-
10K
6.21 mi10:43:1539:536:2519:53
6:24
-0:02
15K
9.32 mi11:02:5659:346:2319:41
6:20
-0:04
20K
12.43 mi11:22:571:19:356:2420:01
6:27
+0:07
Half
13.11 mi11:27:171:23:556:244:20
6:21
-0:06
25K
15.53 mi11:43:141:39:526:2615:57
6:35
+0:14
30K
18.64 mi12:04:472:01:256:3121:33
6:56
+0:21
20M
20.00 mi12:14:342:11:126:349:47
7:12
+0:16
21M
21.00 mi12:22:142:18:526:377:40
7:40
+0:28
35K
21.75 mi12:27:172:23:556:375:03
6:45
-0:55
23M
23.00 mi12:36:042:32:426:388:47
7:01
+0:16
24M
24.00 mi12:42:582:39:366:396:54
6:54
-0:07
40K
24.85 mi12:49:072:45:456:406:09
7:12
+0:18
25.2M
25.20 mi12:51:502:48:286:412:43
7:53
+0:41
Finish
26.22 mi12:58:532:55:316:427:03
6:55
-0:58

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

6:20 /mi

Average Pace

6:42 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:52

57% of race

Time at Steady Pace

49:20

28% of race

Time at Slower Pace

26:19

15% of race

Average Pace: 6:42 /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 mi10:23:2220:006:2620:00
6:26
#3379
10K
6.21 mi10:43:1539:536:2519:53
6:24
#3196
15K
9.32 mi11:02:5659:346:2319:41
6:20
#2947
20K
12.43 mi11:22:571:19:356:2420:01
6:27
#2874
Half
13.11 mi11:27:171:23:556:244:20
6:21
#2873
25K
15.53 mi11:43:141:39:526:2615:57
6:35
#2927
30K
18.64 mi12:04:472:01:256:3121:33
6:56
#3119
20M
20.00 mi12:14:342:11:126:349:47
7:12
#3207
21M
21.00 mi12:22:142:18:526:377:40
7:40
#3318
35K
21.75 mi12:27:172:23:556:375:03
6:45
#3312
23M
23.00 mi12:36:042:32:426:388:47
7:01
#3292
24M
24.00 mi12:42:582:39:366:396:54
6:54
#3278
40K
24.85 mi12:49:072:45:456:406:09
7:12
#3311
25.2M
25.20 mi12:51:502:48:286:412:43
7:53
#3331
Finish
26.22 mi12:58:532:55:316:427:03
6:55
#3362
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3379321032102570(Top 9%)2453(Top 15%)2453(Top 43%)
10K6.21 mi3.10 mi3196+1833040+1703040+1703053(Top 11%)2907(Top 18%)2907(Top 52%)
15K9.32 mi3.11 mi2947+2492808+2322808+2322570(Top 9%)2453(Top 15%)2453(Top 43%)
20K12.43 mi3.11 mi2874+732741+672741+672784(Top 10%)2651(Top 16%)2651(Top 47%)
Half13.11 mi0.68 mi2873+12738+32738+32842(Top 10%)2718(Top 17%)2718(Top 48%)
25K15.53 mi2.42 mi2927-542790-522790-523339(Top 12%)3158(Top 20%)3158(Top 56%)
30K18.64 mi3.11 mi3119-1922966-1762966-1764315(Top 15%)3958(Top 25%)3958(Top 70%)
20M20.00 mi1.36 mi3207-883039-733039-735192(Top 18%)4622(Top 29%)4622(Top 82%)
21M21.00 mi1.00 mi3318-1113137-983137-985463(Top 19%)4709(Top 29%)4709(Top 83%)
35K21.75 mi0.75 mi3312+63128+93128+93825(Top 13%)3447(Top 21%)3447(Top 61%)
23M23.00 mi1.25 mi3292+203105+233105+233848(Top 14%)3461(Top 21%)3461(Top 61%)
24M24.00 mi1.00 mi3278+143087+183087+184090(Top 14%)3607(Top 22%)3607(Top 64%)
40K24.85 mi0.85 mi3311-333115-283115-285003(Top 18%)4213(Top 26%)4213(Top 75%)
25.2M25.20 mi0.35 mi3331-203129-143129-145272(Top 19%)4293(Top 27%)4293(Top 76%)
Finish26.22 mi1.02 mi3362-313148-193148-195201(Top 18%)4249(Top 26%)4249(Top 75%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2570

Males

2453

M18-39

2453

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3053

Males

2907

M18-39

2907

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2570

Males

2453

M18-39

2453

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2784

Males

2651

M18-39

2651

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2842

Males

2718

M18-39

2718

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3339

Males

3158

M18-39

3158

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4315

Males

3958

M18-39

3958

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

5192

Males

4622

M18-39

4622

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5463

Males

4709

M18-39

4709

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3825

Males

3447

M18-39

3447

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3848

Males

3461

M18-39

3461

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

4090

Males

3607

M18-39

3607

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5003

Males

4213

M18-39

4213

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5272

Males

4293

M18-39

4293

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

5201

Males

4249

M18-39

4249

Passing Analysis

Category:
Athletes Passed
1033
Passed By
1016
Net Change
+17
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3379
5K → 10K23855+183#3379#3196
10K → 15K26112+249#3196#2947
15K → 20K11542+73#2947#2874
20K → Half1716+1#2874#2873
Half → 25K51105-54#2873#2927
25K → 30K58250-192#2927#3119
30K → 20M33121-88#3119#3207
20M → 21M23134-111#3207#3318
21M → 35K3630+6#3318#3312
35K → 23M7252+20#3312#3292
23M → 24M4834+14#3292#3278
24M → 40K3063-33#3278#3311
40K → 25.2M1636-20#3311#3331
25.2M → Finish3566-31#3331#3362
TOTALS10331016+17
📊

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