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BOSTON MARATHON 2025

Nick Impey

Bib: 284•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Masters (Masters Men)
#0 / 10463
Top 2%
Division (M40-44)
#0 / 2247
Top 6%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:18
Rank: #272
Start → 5K
17:18 | 5:34/mi
10K· 6.21 mi
34:40
Rank: #277 (-5)
5K → 10K
17:22 | 5:35/mi
15K· 9.32 mi
52:15
Rank: #282 (-5)
10K → 15K
17:35 | 5:40/mi
20K· 12.43 mi
1:11:03
Rank: #400 (-118)
15K → 20K
18:48 | 6:03/mi
Half· 13.11 mi
1:14:59
Rank: #409 (-9)
20K → Half
3:56 | 5:46/mi
25K· 15.53 mi
1:29:55
Rank: #483 (-74)
Half → 25K
14:56 | 6:10/mi
30K· 18.64 mi
1:50:05
Rank: #601 (-118)
25K → 30K
20:10 | 6:29/mi
20M
1:59:05
Rank: #670 (-69)
30K → 20M
9:00 | 6:37/mi
21M
2:06:44
Rank: #777 (-107)
20M → 21M
7:39 | 7:39/mi
35K· 21.75 mi
2:12:17
Rank: #872 (-95)
21M → 35K
5:33 | 7:25/mi
23M
2:22:32
Rank: #1164 (-292)
35K → 23M
10:15 | 8:11/mi
24M
2:29:40
Rank: #1271 (-107)
23M → 24M
7:08 | 7:08/mi
40K· 24.85 mi
2:35:12
Rank: #1267 (+4)
24M → 40K
5:32 | 6:28/mi
25.2M
2:37:37
Rank: #1259 (+8)
40K → 25.2M
2:25 | 7:00/mi
Finish· 26.22 mi
2:44:04
Rank: #1263 (-4)
25.2M → Finish
6:27 | 6:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:14:59
Pace5:43 /mi
2nd Half
Distance13.11 mi
Time1:29:05
Pace6:48 /mi
📊Positive Split: 18.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:2917:185:3417:18
5:34
-
10K
6.21 mi10:34:5134:405:3517:22
5:35
+0:01
15K
9.32 mi10:52:2652:155:3617:35
5:40
+0:05
20K
12.43 mi11:11:141:11:035:4318:48
6:03
+0:23
Half
13.11 mi11:15:101:14:595:433:56
5:46
-0:17
25K
15.53 mi11:30:061:29:555:4714:56
6:10
+0:24
30K
18.64 mi11:50:161:50:055:5420:10
6:29
+0:19
20M
20.00 mi11:59:161:59:055:579:00
6:37
+0:08
21M
21.00 mi12:06:552:06:446:027:39
7:39
+1:02
35K
21.75 mi12:12:282:12:176:055:33
7:25
-0:14
23M
23.00 mi12:22:432:22:326:1210:15
8:11
+0:46
24M
24.00 mi12:29:512:29:406:147:08
7:08
-1:03
40K
24.85 mi12:35:232:35:126:155:32
6:28
-0:40
25.2M
25.20 mi12:37:482:37:376:152:25
7:00
+0:32
Finish
26.22 mi12:44:152:44:046:166:27
6:20
-0:40

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

5:34 /mi

Average Pace

6:16 /mi

Slowest Pace

8:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:59

46% of race

Time at Steady Pace

56:05

34% of race

Time at Slower Pace

33:00

20% of race

Average Pace: 6:15 /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 mi10:17:2917:185:3417:18
5:34
#272
10K
6.21 mi10:34:5134:405:3517:22
5:35
#277
15K
9.32 mi10:52:2652:155:3617:35
5:40
#282
20K
12.43 mi11:11:141:11:035:4318:48
6:03
#400
Half
13.11 mi11:15:101:14:595:433:56
5:46
#409
25K
15.53 mi11:30:061:29:555:4714:56
6:10
#483
30K
18.64 mi11:50:161:50:055:5420:10
6:29
#601
20M
20.00 mi11:59:161:59:055:579:00
6:37
#670
21M
21.00 mi12:06:552:06:446:027:39
7:39
#777
35K
21.75 mi12:12:282:12:176:055:33
7:25
#872
23M
23.00 mi12:22:432:22:326:1210:15
8:11
#1164
24M
24.00 mi12:29:512:29:406:147:08
7:08
#1271
40K
24.85 mi12:35:232:35:126:155:32
6:28
#1267
25.2M
25.20 mi12:37:482:37:376:152:25
7:00
#1259
Finish
26.22 mi12:44:152:44:046:166:27
6:20
#1263
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi272244244322(Top 1%)294(Top 2%)294(Top 13%)
10K6.21 mi3.10 mi277-5248-4248-4293(Top 1%)264(Top 2%)264(Top 12%)
15K9.32 mi3.11 mi282-5253-5253-5322(Top 1%)294(Top 2%)294(Top 13%)
20K12.43 mi3.11 mi400-118368-115368-1151007(Top 4%)949(Top 6%)949(Top 42%)
Half13.11 mi0.68 mi409-9377-9377-9532(Top 2%)500(Top 3%)500(Top 22%)
25K15.53 mi2.42 mi483-74447-70447-701302(Top 5%)1233(Top 8%)1233(Top 55%)
30K18.64 mi3.11 mi601-118554-107554-1071929(Top 7%)1835(Top 11%)1835(Top 82%)
20M20.00 mi1.36 mi670-69623-69623-692095(Top 7%)1982(Top 12%)1982(Top 88%)
21M21.00 mi1.00 mi777-107727-104727-1045343(Top 19%)4613(Top 29%)4613(Top 205%)
35K21.75 mi0.75 mi872-95819-92819-927982(Top 28%)6267(Top 39%)6267(Top 279%)
23M23.00 mi1.25 mi1164-2921097-2781097-27811246(Top 40%)7858(Top 49%)7858(Top 350%)
24M24.00 mi1.00 mi1271-1071196-991196-995353(Top 19%)4487(Top 28%)4487(Top 200%)
40K24.85 mi0.85 mi1267+41192+41192+41498(Top 5%)1385(Top 9%)1385(Top 62%)
25.2M25.20 mi0.35 mi1259+81183+91183+91464(Top 5%)1335(Top 8%)1335(Top 59%)
Finish26.22 mi1.02 mi1263-41188-51188-52000(Top 7%)1837(Top 11%)1837(Top 82%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

322

Males

294

M40-44

294

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

293

Males

264

M40-44

264

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

322

Males

294

M40-44

294

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1007

Males

949

M40-44

949

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

532

Males

500

M40-44

500

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1302

Males

1233

M40-44

1233

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1929

Males

1835

M40-44

1835

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

2095

Males

1982

M40-44

1982

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5343

Males

4613

M40-44

4613

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7982

Males

6267

M40-44

6267

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

11246

Males

7858

M40-44

7858

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5353

Males

4487

M40-44

4487

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1498

Males

1385

M40-44

1385

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1464

Males

1335

M40-44

1335

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

2000

Males

1837

M40-44

1837

Passing Analysis

Category:
Athletes Passed
100
Passed By
1091
Net Change
-991
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#272
5K → 10K1419-5#272#277
10K → 15K712-5#277#282
15K → 20K2120-118#282#400
20K → Half312-9#400#409
Half → 25K478-74#409#483
25K → 30K5123-118#483#601
30K → 20M372-69#601#670
20M → 21M1108-107#670#777
21M → 35K6101-95#777#872
35K → 23M1293-292#872#1164
23M → 24M3110-107#1164#1271
24M → 40K1612+4#1271#1267
40K → 25.2M179+8#1267#1259
25.2M → Finish1822-4#1259#1263
TOTALS1001091-991
📊

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