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BOSTON MARATHON 2025

Joshua Shaffer

Bib: 3210•M

WI

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 27%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:04
Rank: #3512
Start → 5K
20:04 | 6:28/mi
10K· 6.21 mi
39:07
Rank: #2377 (+1135)
5K → 10K
19:03 | 6:08/mi
15K· 9.32 mi
58:04
Rank: #1986 (+391)
10K → 15K
18:57 | 6:06/mi
20K· 12.43 mi
1:17:10
Rank: #1800 (+186)
15K → 20K
19:06 | 6:09/mi
Half· 13.11 mi
1:21:17
Rank: #1764 (+36)
20K → Half
4:07 | 6:02/mi
25K· 15.53 mi
1:36:29
Rank: #1735 (+29)
Half → 25K
15:12 | 6:16/mi
30K· 18.64 mi
1:56:45
Rank: #1777 (-42)
25K → 30K
20:16 | 6:31/mi
20M
2:05:50
Rank: #1793 (-16)
30K → 20M
9:05 | 6:41/mi
21M
2:13:03
Rank: #1829 (-36)
20M → 21M
7:13 | 7:13/mi
35K· 21.75 mi
2:17:56
Rank: #1840 (-11)
21M → 35K
4:53 | 6:32/mi
23M
2:26:26
Rank: #1856 (-16)
35K → 23M
8:30 | 6:47/mi
24M
2:33:04
Rank: #1864 (-8)
23M → 24M
6:38 | 6:38/mi
40K· 24.85 mi
2:39:02
Rank: #1906 (-42)
24M → 40K
5:58 | 6:59/mi
25.2M
2:41:42
Rank: #1928 (-22)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
2:48:26
Rank: #1956 (-28)
25.2M → Finish
6:44 | 6:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:17
Pace6:12 /mi
2nd Half
Distance13.11 mi
Time1:27:09
Pace6:39 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2620:046:2820:04
6:28
-
10K
6.21 mi10:40:2939:076:1819:03
6:08
-0:20
15K
9.32 mi10:59:2658:046:1418:57
6:06
-0:02
20K
12.43 mi11:18:321:17:106:1319:06
6:09
+0:03
Half
13.11 mi11:22:391:21:176:124:07
6:02
-0:07
25K
15.53 mi11:37:511:36:296:1315:12
6:16
+0:14
30K
18.64 mi11:58:071:56:456:1620:16
6:31
+0:15
20M
20.00 mi12:07:122:05:506:179:05
6:41
+0:10
21M
21.00 mi12:14:252:13:036:207:13
7:13
+0:32
35K
21.75 mi12:19:182:17:566:214:53
6:32
-0:41
23M
23.00 mi12:27:482:26:266:228:30
6:47
+0:15
24M
24.00 mi12:34:262:33:046:236:38
6:38
-0:09
40K
24.85 mi12:40:242:39:026:245:58
6:59
+0:21
25.2M
25.20 mi12:43:042:41:426:252:40
7:44
+0:45
Finish
26.22 mi12:49:482:48:266:266:44
6:36
-1:08

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

6:02 /mi

Average Pace

6:26 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:25

45% of race

Time at Steady Pace

1:07:40

40% of race

Time at Slower Pace

24:21

14% of race

Average Pace: 6:25 /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 mi10:21:2620:046:2820:04
6:28
#3512
10K
6.21 mi10:40:2939:076:1819:03
6:08
#2377
15K
9.32 mi10:59:2658:046:1418:57
6:06
#1986
20K
12.43 mi11:18:321:17:106:1319:06
6:09
#1800
Half
13.11 mi11:22:391:21:176:124:07
6:02
#1764
25K
15.53 mi11:37:511:36:296:1315:12
6:16
#1735
30K
18.64 mi11:58:071:56:456:1620:16
6:31
#1777
20M
20.00 mi12:07:122:05:506:179:05
6:41
#1793
21M
21.00 mi12:14:252:13:036:207:13
7:13
#1829
35K
21.75 mi12:19:182:17:566:214:53
6:32
#1840
23M
23.00 mi12:27:482:26:266:228:30
6:47
#1856
24M
24.00 mi12:34:262:33:046:236:38
6:38
#1864
40K
24.85 mi12:40:242:39:026:245:58
6:59
#1906
25.2M
25.20 mi12:43:042:41:426:252:40
7:44
#1928
Finish
26.22 mi12:49:482:48:266:266:44
6:36
#1956
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3512333433341377(Top 5%)1309(Top 8%)1309(Top 23%)
10K6.21 mi3.10 mi2377+11352267+10672267+10671589(Top 6%)1512(Top 9%)1512(Top 27%)
15K9.32 mi3.11 mi1986+3911890+3771890+3771377(Top 5%)1309(Top 8%)1309(Top 23%)
20K12.43 mi3.11 mi1800+1861711+1791711+1791366(Top 5%)1294(Top 8%)1294(Top 23%)
Half13.11 mi0.68 mi1764+361677+341677+341291(Top 5%)1225(Top 8%)1225(Top 22%)
25K15.53 mi2.42 mi1735+291648+291648+291731(Top 6%)1644(Top 10%)1644(Top 29%)
30K18.64 mi3.11 mi1777-421692-441692-442076(Top 7%)1973(Top 12%)1973(Top 35%)
20M20.00 mi1.36 mi1793-161705-131705-132364(Top 8%)2231(Top 14%)2231(Top 40%)
21M21.00 mi1.00 mi1829-361739-341739-343179(Top 11%)2927(Top 18%)2927(Top 52%)
35K21.75 mi0.75 mi1840-111748-91748-92555(Top 9%)2374(Top 15%)2374(Top 42%)
23M23.00 mi1.25 mi1856-161760-121760-122622(Top 9%)2414(Top 15%)2414(Top 43%)
24M24.00 mi1.00 mi1864-81767-71767-72617(Top 9%)2400(Top 15%)2400(Top 43%)
40K24.85 mi0.85 mi1906-421806-391806-393721(Top 13%)3266(Top 20%)3266(Top 58%)
25.2M25.20 mi0.35 mi1928-221826-201826-204397(Top 15%)3675(Top 23%)3675(Top 65%)
Finish26.22 mi1.02 mi1956-281853-271853-273342(Top 12%)2926(Top 18%)2926(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1377

Males

1309

M18-39

1309

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1589

Males

1512

M18-39

1512

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1377

Males

1309

M18-39

1309

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1366

Males

1294

M18-39

1294

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1291

Males

1225

M18-39

1225

Half→25K

13.1 - 15.5 mi

Top 6%
×4stories
+66ft-88ft

Overall

1731

Males

1644

M18-39

1644

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

2076

Males

1973

M18-39

1973

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2364

Males

2231

M18-39

2231

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3179

Males

2927

M18-39

2927

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2555

Males

2374

M18-39

2374

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2622

Males

2414

M18-39

2414

23M→24M

23.0 - 24.0 mi

Top 9%
×6stories
+12ft-82ft

Overall

2617

Males

2400

M18-39

2400

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3721

Males

3266

M18-39

3266

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4397

Males

3675

M18-39

3675

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3342

Males

2926

M18-39

2926

Passing Analysis

Category:
Athletes Passed
2067
Passed By
511
Net Change
+1556
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3512
5K → 10K11361+1135#3512#2377
10K → 15K3921+391#2377#1986
15K → 20K1871+186#1986#1800
20K → Half371+36#1800#1764
Half → 25K6334+29#1764#1735
25K → 30K59101-42#1735#1777
30K → 20M3551-16#1777#1793
20M → 21M2460-36#1793#1829
21M → 35K2334-11#1829#1840
35K → 23M3854-16#1840#1856
23M → 24M2735-8#1856#1864
24M → 40K2264-42#1864#1906
40K → 25.2M527-22#1906#1928
25.2M → Finish1947-28#1928#1956
TOTALS2067511+1556
📊

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