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BOSTON MARATHON 2025

Justin Smith

Bib: 4887•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 16%
Gender (Male)
#0 / 16105
Top 27%
Masters (Masters Men)
#0 / 10463
Top 13%
Division (M40-44)
#0 / 2247
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:25
Rank: #4359
Start → 5K
20:25 | 6:34/mi
10K· 6.21 mi
40:52
Rank: #4319 (+40)
5K → 10K
20:27 | 6:35/mi
15K· 9.32 mi
1:01:28
Rank: #4356 (-37)
10K → 15K
20:36 | 6:38/mi
20K· 12.43 mi
1:23:00
Rank: #4809 (-453)
15K → 20K
21:32 | 6:56/mi
Half· 13.11 mi
1:27:23
Rank: #4691 (+118)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:43:22
Rank: #4402 (+289)
Half → 25K
15:59 | 6:36/mi
30K· 18.64 mi
2:04:49
Rank: #4283 (+119)
25K → 30K
21:27 | 6:54/mi
20M
2:14:14
Rank: #4192 (+91)
30K → 20M
9:25 | 6:56/mi
21M
2:22:07
Rank: #4337 (-145)
20M → 21M
7:53 | 7:53/mi
35K· 21.75 mi
2:27:27
Rank: #4403 (-66)
21M → 35K
5:20 | 7:08/mi
23M
2:36:28
Rank: #4405 (-2)
35K → 23M
9:01 | 7:12/mi
24M
2:43:28
Rank: #4403 (+2)
23M → 24M
7:00 | 7:00/mi
40K· 24.85 mi
2:49:57
Rank: #4520 (-117)
24M → 40K
6:29 | 7:35/mi
25.2M
2:52:50
Rank: #4597 (-77)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
2:59:56
Rank: #4671 (-74)
25.2M → Finish
7:06 | 6:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:23
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:32:33
Pace7:04 /mi
📊Positive Split: 5.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:1020:256:3420:25
6:34
-
10K
6.21 mi10:44:3740:526:3520:27
6:35
+0:01
15K
9.32 mi11:05:131:01:286:3620:36
6:38
+0:03
20K
12.43 mi11:26:451:23:006:4121:32
6:56
+0:18
Half
13.11 mi11:31:081:27:236:404:23
6:25
-0:31
25K
15.53 mi11:47:071:43:226:3915:59
6:36
+0:11
30K
18.64 mi12:08:342:04:496:4221:27
6:54
+0:18
20M
20.00 mi12:17:592:14:146:439:25
6:56
+0:02
21M
21.00 mi12:25:522:22:076:467:53
7:53
+0:57
35K
21.75 mi12:31:122:27:276:475:20
7:08
-0:45
23M
23.00 mi12:40:132:36:286:489:01
7:12
+0:04
24M
24.00 mi12:47:132:43:286:497:00
7:00
-0:12
40K
24.85 mi12:53:422:49:576:506:29
7:35
+0:35
25.2M
25.20 mi12:56:352:52:506:522:53
8:22
+0:47
Finish
26.22 mi13:03:412:59:566:527:06
6:58
-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

6:25 /mi

Average Pace

6:52 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:50

45% of race

Time at Steady Pace

1:11:50

40% of race

Time at Slower Pace

26:16

15% of race

Average Pace: 6:52 /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 mi10:24:1020:256:3420:25
6:34
#4359
10K
6.21 mi10:44:3740:526:3520:27
6:35
#4319
15K
9.32 mi11:05:131:01:286:3620:36
6:38
#4356
20K
12.43 mi11:26:451:23:006:4121:32
6:56
#4809
Half
13.11 mi11:31:081:27:236:404:23
6:25
#4691
25K
15.53 mi11:47:071:43:226:3915:59
6:36
#4402
30K
18.64 mi12:08:342:04:496:4221:27
6:54
#4283
20M
20.00 mi12:17:592:14:146:439:25
6:56
#4192
21M
21.00 mi12:25:522:22:076:467:53
7:53
#4337
35K
21.75 mi12:31:122:27:276:475:20
7:08
#4403
23M
23.00 mi12:40:132:36:286:489:01
7:12
#4405
24M
24.00 mi12:47:132:43:286:497:00
7:00
#4403
40K
24.85 mi12:53:422:49:576:506:29
7:35
#4520
25.2M
25.20 mi12:56:352:52:506:522:53
8:22
#4597
Finish
26.22 mi13:03:412:59:566:527:06
6:58
#4671
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4359409640964491(Top 16%)4208(Top 26%)4208(Top 187%)
10K6.21 mi3.10 mi4319+404060+364060+364309(Top 15%)4047(Top 25%)4047(Top 180%)
15K9.32 mi3.11 mi4356-374095-354095-354491(Top 16%)4208(Top 26%)4208(Top 187%)
20K12.43 mi3.11 mi4809-4534484-3894484-3896403(Top 23%)5743(Top 36%)5743(Top 256%)
Half13.11 mi0.68 mi4691+1184380+1044380+1043221(Top 11%)3062(Top 19%)3062(Top 136%)
25K15.53 mi2.42 mi4402+2894125+2554125+2553416(Top 12%)3225(Top 20%)3225(Top 144%)
30K18.64 mi3.11 mi4283+1194007+1184007+1184103(Top 14%)3774(Top 23%)3774(Top 168%)
20M20.00 mi1.36 mi4192+913923+843923+843688(Top 13%)3394(Top 21%)3394(Top 151%)
21M21.00 mi1.00 mi4337-1454033-1104033-1106633(Top 23%)5444(Top 34%)5444(Top 242%)
35K21.75 mi0.75 mi4403-664084-514084-516096(Top 21%)5118(Top 32%)5118(Top 228%)
23M23.00 mi1.25 mi4405-24077+74077+74857(Top 17%)4208(Top 26%)4208(Top 187%)
24M24.00 mi1.00 mi4403+24065+124065+124606(Top 16%)3977(Top 25%)3977(Top 177%)
40K24.85 mi0.85 mi4520-1174154-894154-897253(Top 26%)5559(Top 35%)5559(Top 247%)
25.2M25.20 mi0.35 mi4597-774221-674221-677860(Top 28%)5801(Top 36%)5801(Top 258%)
Finish26.22 mi1.02 mi4671-744280-594280-595480(Top 19%)4404(Top 27%)4404(Top 196%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4491

Males

4208

M40-44

4208

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4309

Males

4047

M40-44

4047

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4491

Males

4208

M40-44

4208

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6403

Males

5743

M40-44

5743

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3221

Males

3062

M40-44

3062

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3416

Males

3225

M40-44

3225

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

4103

Males

3774

M40-44

3774

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3688

Males

3394

M40-44

3394

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6633

Males

5444

M40-44

5444

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

6096

Males

5118

M40-44

5118

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4857

Males

4208

M40-44

4208

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4606

Males

3977

M40-44

3977

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7253

Males

5559

M40-44

5559

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7860

Males

5801

M40-44

5801

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5480

Males

4404

M40-44

4404

Passing Analysis

Category:
Athletes Passed
1245
Passed By
1557
Net Change
-312
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4359
5K → 10K155115+40#4359#4319
10K → 15K88125-37#4319#4356
15K → 20K41494-453#4356#4809
20K → Half1191+118#4809#4691
Half → 25K2945+289#4691#4402
25K → 30K20081+119#4402#4283
30K → 20M11827+91#4283#4192
20M → 21M28173-145#4192#4337
21M → 35K2793-66#4337#4403
35K → 23M6870-2#4403#4405
23M → 24M4947+2#4405#4403
24M → 40K28145-117#4403#4520
40K → 25.2M885-77#4520#4597
25.2M → Finish2296-74#4597#4671
TOTALS12451557-312
📊

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