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BOSTON MARATHON 2025

Zachary Smith

Bib: 5371•M

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 13%
Division (M18-39)
#0 / 5642
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:19
Rank: #4108
Start → 5K
6:32/mi
20:19 split
10K· 6.21 mi
40:15
Rank: #3610 (+498)
5K → 10K
6:25/mi
19:56 split
15K· 9.32 mi
1:00:15
Rank: #3410 (+200)
10K → 15K
6:26/mi
20:00 split
20K· 12.43 mi
1:20:34
Rank: #3376 (+34)
15K → 20K
6:32/mi
20:19 split
Half· 13.11 mi
1:25:01
Rank: #3404 (-28)
20K → Half
6:31/mi
4:27 split
25K· 15.53 mi
1:40:56
Rank: #3360 (+44)
Half → 25K
6:34/mi
15:55 split
30K· 18.64 mi
2:01:38
Rank: #3182 (+178)
25K → 30K
6:40/mi
20:42 split
20M
2:10:35
Rank: #3036 (+146)
30K → 20M
6:35/mi
8:57 split
21M
2:17:21
Rank: #2902 (+134)
20M → 21M
6:46/mi
6:46 split
35K· 21.75 mi
2:22:03
Rank: #2820 (+82)
21M → 35K
6:17/mi
4:42 split
23M
2:29:58
Rank: #2633 (+187)
35K → 23M
6:19/mi
7:55 split
24M
2:36:04
Rank: #2475 (+158)
23M → 24M
6:06/mi
6:06 split
40K· 24.85 mi
2:41:28
Rank: #2387 (+88)
24M → 40K
6:19/mi
5:24 split
25.2M
2:43:47
Rank: #2333 (+54)
40K → 25.2M
6:43/mi
2:19 split
Finish· 26.22 mi
2:49:53
Rank: #2250 (+83)
25.2M → Finish
5:59/mi
6:06 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:25:01
Pace6:29 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:24:52
Pace6:28 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4020:196:3220:19
6:32
-
10K
6.21 mi10:43:3640:156:2919:56
6:25
-0:07
15K
9.32 mi11:03:361:00:156:2820:00
6:26
+0:01
20K
12.43 mi11:23:551:20:346:2920:19
6:32
+0:06
Half
13.11 mi11:28:221:25:016:294:27
6:31
-0:01
25K
15.53 mi11:44:171:40:566:3015:55
6:34
+0:03
30K
18.64 mi12:04:592:01:386:3120:42
6:40
+0:06
20M
20.00 mi12:13:562:10:356:328:57
6:35
-0:05
21M
21.00 mi12:20:422:17:216:326:46
6:46
+0:11
35K
21.75 mi12:25:242:22:036:324:42
6:17
-0:29
23M
23.00 mi12:33:192:29:586:317:55
6:19
+0:02
24M
24.00 mi12:39:252:36:046:306:06
6:06
-0:13
40K
24.85 mi12:44:492:41:286:305:24
6:19
+0:13
25.2M
25.20 mi12:47:082:43:476:302:19
6:43
+0:24
Finish
26.22 mi12:53:142:49:536:296:06
5:59
-0:44

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

5:59 /mi

Average Pace

6:29 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:09

77% of race

Time at Steady Pace

38:44

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:29 /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 mi10:23:4020:196:3220:19
6:32
#4108
10K
6.21 mi10:43:3640:156:2919:56
6:25
#3610
15K
9.32 mi11:03:361:00:156:2820:00
6:26
#3410
20K
12.43 mi11:23:551:20:346:2920:19
6:32
#3376
Half
13.11 mi11:28:221:25:016:294:27
6:31
#3404
25K
15.53 mi11:44:171:40:566:3015:55
6:34
#3360
30K
18.64 mi12:04:592:01:386:3120:42
6:40
#3182
20M
20.00 mi12:13:562:10:356:328:57
6:35
#3036
21M
21.00 mi12:20:422:17:216:326:46
6:46
#2902
35K
21.75 mi12:25:242:22:036:324:42
6:17
#2820
23M
23.00 mi12:33:192:29:586:317:55
6:19
#2633
24M
24.00 mi12:39:252:36:046:306:06
6:06
#2475
40K
24.85 mi12:44:492:41:286:305:24
6:19
#2387
25.2M
25.20 mi12:47:082:43:476:302:19
6:43
#2333
Finish
26.22 mi12:53:142:49:536:296:06
5:59
#2250
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4108387238723155(Top 11%)3001(Top 19%)3001(Top 53%)
10K6.21 mi3.10 mi3610+4983422+4503422+4503131(Top 11%)2979(Top 18%)2979(Top 53%)
15K9.32 mi3.11 mi3410+2003238+1843238+1843155(Top 11%)3001(Top 19%)3001(Top 53%)
20K12.43 mi3.11 mi3376+343205+333205+333333(Top 12%)3158(Top 20%)3158(Top 56%)
Half13.11 mi0.68 mi3404-283230-253230-253746(Top 13%)3526(Top 22%)3526(Top 62%)
25K15.53 mi2.42 mi3360+443193+373193+373218(Top 11%)3046(Top 19%)3046(Top 54%)
30K18.64 mi3.11 mi3182+1783023+1703023+1702685(Top 9%)2539(Top 16%)2539(Top 45%)
20M20.00 mi1.36 mi3036+1462882+1412882+1411963(Top 7%)1856(Top 12%)1856(Top 33%)
21M21.00 mi1.00 mi2902+1342757+1252757+1251421(Top 5%)1341(Top 8%)1341(Top 24%)
35K21.75 mi0.75 mi2820+822681+762681+761536(Top 5%)1446(Top 9%)1446(Top 26%)
23M23.00 mi1.25 mi2633+1872502+1792502+179942(Top 3%)887(Top 6%)887(Top 16%)
24M24.00 mi1.00 mi2475+1582353+1492353+149782(Top 3%)736(Top 5%)736(Top 13%)
40K24.85 mi0.85 mi2387+882268+852268+851013(Top 4%)950(Top 6%)950(Top 17%)
25.2M25.20 mi0.35 mi2333+542217+512217+51813(Top 3%)756(Top 5%)756(Top 13%)
Finish26.22 mi1.02 mi2250+832135+822135+82888(Top 3%)837(Top 5%)837(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3155

Males

3001

M18-39

3001

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

3131

Males

2979

M18-39

2979

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3155

Males

3001

M18-39

3001

15K→20K

9.3 - 12.4 mi

Top 12%
×5stories
+106ft-86ft

Overall

3333

Males

3158

M18-39

3158

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3746

Males

3526

M18-39

3526

Half→25K

13.1 - 15.5 mi

Top 11%
×4stories
+66ft-88ft

Overall

3218

Males

3046

M18-39

3046

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2685

Males

2539

M18-39

2539

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1963

Males

1856

M18-39

1856

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1421

Males

1341

M18-39

1341

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1536

Males

1446

M18-39

1446

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

942

Males

887

M18-39

887

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

782

Males

736

M18-39

736

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1013

Males

950

M18-39

950

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

813

Males

756

M18-39

756

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

888

Males

837

M18-39

837

Passing Analysis

Category:
Athletes Passed
2101
Passed By
243
Net Change
+1858
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4108
5K → 10K51315+498#4108#3610
10K → 15K22626+200#3610#3410
15K → 20K11884+34#3410#3376
20K → Half533-28#3376#3404
Half → 25K8440+44#3404#3360
25K → 30K20426+178#3360#3182
30K → 20M1526+146#3182#3036
20M → 21M1351+134#3036#2902
21M → 35K853+82#2902#2820
35K → 23M1870+187#2820#2633
23M → 24M1580+158#2633#2475
24M → 40K913+88#2475#2387
40K → 25.2M562+54#2387#2333
25.2M → Finish874+83#2333#2250
TOTALS2101243+1858
📊

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