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BOSTON MARATHON 2025

Jack Spaulding

Bib: 577•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Age Group (M18-39)
#0 / 5642
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
18:38
Rank: #1077
Start → 5K
18:38 | 6:00/mi
10K· 6.21 mi
37:10
Rank: #1021 (+56)
5K → 10K
18:32 | 5:58/mi
15K· 9.32 mi
55:37
Rank: #973 (+48)
10K → 15K
18:27 | 5:56/mi
20K· 12.43 mi
1:14:10
Rank: #915 (+58)
15K → 20K
18:33 | 5:58/mi
Half· 13.11 mi
1:18:10
Rank: #903 (+12)
20K → Half
4:00 | 5:52/mi
25K· 15.53 mi
1:32:56
Rank: #906 (-3)
Half → 25K
14:46 | 6:05/mi
30K· 18.64 mi
1:52:48
Rank: #963 (-57)
25K → 30K
19:52 | 6:24/mi
20M
2:01:48
Rank: #1010 (-47)
30K → 20M
9:00 | 6:37/mi
21M
2:08:52
Rank: #1050 (-40)
20M → 21M
7:04 | 7:04/mi
35K· 21.75 mi
2:13:43
Rank: #1084 (-34)
21M → 35K
4:51 | 6:29/mi
23M
2:22:07
Rank: #1107 (-23)
35K → 23M
8:24 | 6:43/mi
24M
2:28:39
Rank: #1126 (-19)
23M → 24M
6:32 | 6:32/mi
40K· 24.85 mi
2:34:21
Rank: #1140 (-14)
24M → 40K
5:42 | 6:40/mi
25.2M
2:36:52
Rank: #1147 (-7)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:43:42
Rank: #1213 (-66)
25.2M → Finish
6:50 | 6:42/mi
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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:10
Pace5:58 /mi
2nd Half
Distance13.11 mi
Time1:25:32
Pace6:31 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:5318:386:0018:38
6:00
-
10K
6.21 mi10:37:2537:105:5918:32
5:58
-0:02
15K
9.32 mi10:55:5255:375:5818:27
5:56
-0:02
20K
12.43 mi11:14:251:14:105:5818:33
5:58
+0:02
Half
13.11 mi11:18:251:18:105:584:00
5:52
-0:06
25K
15.53 mi11:33:111:32:565:5914:46
6:05
+0:13
30K
18.64 mi11:53:031:52:486:0319:52
6:24
+0:19
20M
20.00 mi12:02:032:01:486:059:00
6:37
+0:13
21M
21.00 mi12:09:072:08:526:087:04
7:04
+0:27
35K
21.75 mi12:13:582:13:436:094:51
6:29
-0:35
23M
23.00 mi12:22:222:22:076:118:24
6:43
+0:14
24M
24.00 mi12:28:542:28:396:126:32
6:32
-0:11
40K
24.85 mi12:34:362:34:216:135:42
6:40
+0:08
25.2M
25.20 mi12:37:072:36:526:132:31
7:18
+0:38
Finish
26.22 mi12:43:572:43:426:156:50
6:42
-0:36

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

5:52 /mi

Average Pace

6:15 /mi

Slowest Pace

7:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:32:56

57% of race

Time at Steady Pace

45:57

28% of race

Time at Slower Pace

24:49

15% 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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:5318:386:0018:38
6:00
#1077
10K
6.21 mi10:37:2537:105:5918:32
5:58
#1021
15K
9.32 mi10:55:5255:375:5818:27
5:56
#973
20K
12.43 mi11:14:251:14:105:5818:33
5:58
#915
Half
13.11 mi11:18:251:18:105:584:00
5:52
#903
25K
15.53 mi11:33:111:32:565:5914:46
6:05
#906
30K
18.64 mi11:53:031:52:486:0319:52
6:24
#963
20M
20.00 mi12:02:032:01:486:059:00
6:37
#1010
21M
21.00 mi12:09:072:08:526:087:04
7:04
#1050
35K
21.75 mi12:13:582:13:436:094:51
6:29
#1084
23M
23.00 mi12:22:222:22:076:118:24
6:43
#1107
24M
24.00 mi12:28:542:28:396:126:32
6:32
#1126
40K
24.85 mi12:34:362:34:216:135:42
6:40
#1140
25.2M
25.20 mi12:37:072:36:526:132:31
7:18
#1147
Finish
26.22 mi12:43:572:43:426:156:50
6:42
#1213
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi107710181018852(Top 3%)800(Top 5%)800(Top 14%)
10K6.21 mi3.10 mi1021+56961+57961+571013(Top 4%)956(Top 6%)956(Top 17%)
15K9.32 mi3.11 mi973+48916+45916+45852(Top 3%)800(Top 5%)800(Top 14%)
20K12.43 mi3.11 mi915+58860+56860+56811(Top 3%)762(Top 5%)762(Top 14%)
Half13.11 mi0.68 mi903+12850+10850+10753(Top 3%)707(Top 4%)707(Top 13%)
25K15.53 mi2.42 mi906-3854-4854-41058(Top 4%)1001(Top 6%)1001(Top 18%)
30K18.64 mi3.11 mi963-57907-53907-531525(Top 5%)1443(Top 9%)1443(Top 26%)
20M20.00 mi1.36 mi1010-47951-44951-442094(Top 7%)1981(Top 12%)1981(Top 35%)
21M21.00 mi1.00 mi1050-40989-38989-382499(Top 9%)2325(Top 14%)2325(Top 41%)
35K21.75 mi0.75 mi1084-341021-321021-322342(Top 8%)2185(Top 14%)2185(Top 39%)
23M23.00 mi1.25 mi1107-231043-221043-222270(Top 8%)2113(Top 13%)2113(Top 37%)
24M24.00 mi1.00 mi1126-191060-171060-172153(Top 8%)1993(Top 12%)1993(Top 35%)
40K24.85 mi0.85 mi1140-141073-131073-132204(Top 8%)2019(Top 13%)2019(Top 36%)
25.2M25.20 mi0.35 mi1147-71079-61079-62427(Top 9%)2161(Top 13%)2161(Top 38%)
Finish26.22 mi1.02 mi1213-661138-591138-593859(Top 14%)3324(Top 21%)3324(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

852

Males

800

M18-39

800

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1013

Males

956

M18-39

956

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

852

Males

800

M18-39

800

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

811

Males

762

M18-39

762

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

753

Males

707

M18-39

707

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1058

Males

1001

M18-39

1001

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1525

Males

1443

M18-39

1443

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

2094

Males

1981

M18-39

1981

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2499

Males

2325

M18-39

2325

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2342

Males

2185

M18-39

2185

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2270

Males

2113

M18-39

2113

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2153

Males

1993

M18-39

1993

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2204

Males

2019

M18-39

2019

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2427

Males

2161

M18-39

2161

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3859

Males

3324

M18-39

3324

Passing Analysis

Category:
Athletes Passed
366
Passed By
502
Net Change
-136
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1077
5K → 10K7620+56#1077#1021
10K → 15K5911+48#1021#973
15K → 20K679+58#973#915
20K → Half142+12#915#903
Half → 25K2326-3#903#906
25K → 30K2683-57#906#963
30K → 20M1865-47#963#1010
20M → 21M1050-40#1010#1050
21M → 35K741-34#1050#1084
35K → 23M3457-23#1084#1107
23M → 24M1029-19#1107#1126
24M → 40K1226-14#1126#1140
40K → 25.2M29-7#1140#1147
25.2M → Finish874-66#1147#1213
TOTALS366502-136
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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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