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BOSTON MARATHON 2025

Brian Thorn

Bib: 1875•M

IA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 6%
Gender (Male)
#0 / 16105
Top 11%
Masters (Masters Men)
#0 / 10463
Top 3%
Division (M40-44)
#0 / 2247
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:56
Rank: #3238
Start → 5K
19:56 | 6:25/mi
10K· 6.21 mi
39:39
Rank: #2915 (+323)
5K → 10K
19:43 | 6:21/mi
15K· 9.32 mi
59:23
Rank: #2818 (+97)
10K → 15K
19:44 | 6:21/mi
20K· 12.43 mi
1:19:20
Rank: #2760 (+58)
15K → 20K
19:57 | 6:25/mi
Half· 13.11 mi
1:23:39
Rank: #2748 (+12)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:39:09
Rank: #2644 (+104)
Half → 25K
15:30 | 6:24/mi
30K· 18.64 mi
1:59:21
Rank: #2463 (+181)
25K → 30K
20:12 | 6:30/mi
20M
2:08:12
Rank: #2365 (+98)
30K → 20M
8:51 | 6:31/mi
21M
2:15:02
Rank: #2294 (+71)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:19:47
Rank: #2256 (+38)
21M → 35K
4:45 | 6:21/mi
23M
2:27:43
Rank: #2136 (+120)
35K → 23M
7:56 | 6:20/mi
24M
2:33:55
Rank: #2024 (+112)
23M → 24M
6:12 | 6:12/mi
40K· 24.85 mi
2:39:20
Rank: #1961 (+63)
24M → 40K
5:25 | 6:20/mi
25.2M
2:41:41
Rank: #1926 (+35)
40K → 25.2M
2:21 | 6:49/mi
Finish· 26.22 mi
2:47:45
Rank: #1835 (+91)
25.2M → Finish
6:04 | 5:57/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:23:39
Pace6:23 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:24:06
Pace6:25 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4519:566:2519:56
6:25
-
10K
6.21 mi10:40:2839:396:2319:43
6:21
-0:04
15K
9.32 mi11:00:1259:236:2219:44
6:21
0:00
20K
12.43 mi11:20:091:19:206:2319:57
6:25
+0:04
Half
13.11 mi11:24:281:23:396:234:19
6:20
-0:05
25K
15.53 mi11:39:581:39:096:2315:30
6:24
+0:04
30K
18.64 mi12:00:101:59:216:2420:12
6:30
+0:06
20M
20.00 mi12:09:012:08:126:258:51
6:31
+0:01
21M
21.00 mi12:15:512:15:026:266:50
6:50
+0:19
35K
21.75 mi12:20:362:19:476:264:45
6:21
-0:29
23M
23.00 mi12:28:322:27:436:257:56
6:20
-0:01
24M
24.00 mi12:34:442:33:556:256:12
6:12
-0:08
40K
24.85 mi12:40:092:39:206:255:25
6:20
+0:08
25.2M
25.20 mi12:42:302:41:416:252:21
6:49
+0:29
Finish
26.22 mi12:48:342:47:456:246:04
5:57
-0:52

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

5:57 /mi

Average Pace

6:24 /mi

Slowest Pace

6:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:38:34

95% of race

Time at Steady Pace

9:11

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:24 /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 mi10:20:4519:566:2519:56
6:25
#3238
10K
6.21 mi10:40:2839:396:2319:43
6:21
#2915
15K
9.32 mi11:00:1259:236:2219:44
6:21
#2818
20K
12.43 mi11:20:091:19:206:2319:57
6:25
#2760
Half
13.11 mi11:24:281:23:396:234:19
6:20
#2748
25K
15.53 mi11:39:581:39:096:2315:30
6:24
#2644
30K
18.64 mi12:00:101:59:216:2420:12
6:30
#2463
20M
20.00 mi12:09:012:08:126:258:51
6:31
#2365
21M
21.00 mi12:15:512:15:026:266:50
6:50
#2294
35K
21.75 mi12:20:362:19:476:264:45
6:21
#2256
23M
23.00 mi12:28:322:27:436:257:56
6:20
#2136
24M
24.00 mi12:34:442:33:556:256:12
6:12
#2024
40K
24.85 mi12:40:092:39:206:255:25
6:20
#1961
25.2M
25.20 mi12:42:302:41:416:252:21
6:49
#1926
Finish
26.22 mi12:48:342:47:456:246:04
5:57
#1835
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3238307730772645(Top 9%)2522(Top 16%)2522(Top 112%)
10K6.21 mi3.10 mi2915+3232778+2992778+2992720(Top 10%)2591(Top 16%)2591(Top 115%)
15K9.32 mi3.11 mi2818+972687+912687+912645(Top 9%)2522(Top 16%)2522(Top 112%)
20K12.43 mi3.11 mi2760+582632+552632+552640(Top 9%)2513(Top 16%)2513(Top 112%)
Half13.11 mi0.68 mi2748+122622+102622+102680(Top 9%)2563(Top 16%)2563(Top 114%)
25K15.53 mi2.42 mi2644+1042525+972525+972343(Top 8%)2228(Top 14%)2228(Top 99%)
30K18.64 mi3.11 mi2463+1812350+1752350+1751997(Top 7%)1899(Top 12%)1899(Top 85%)
20M20.00 mi1.36 mi2365+982256+942256+941688(Top 6%)1596(Top 10%)1596(Top 71%)
21M21.00 mi1.00 mi2294+712188+682188+681653(Top 6%)1562(Top 10%)1562(Top 70%)
35K21.75 mi0.75 mi2256+382148+402148+401835(Top 6%)1724(Top 11%)1724(Top 77%)
23M23.00 mi1.25 mi2136+1202033+1152033+115980(Top 3%)924(Top 6%)924(Top 41%)
24M24.00 mi1.00 mi2024+1121921+1121921+1121038(Top 4%)977(Top 6%)977(Top 43%)
40K24.85 mi0.85 mi1961+631859+621859+621071(Top 4%)1003(Top 6%)1003(Top 45%)
25.2M25.20 mi0.35 mi1926+351824+351824+351055(Top 4%)973(Top 6%)973(Top 43%)
Finish26.22 mi1.02 mi1835+911737+871737+87817(Top 3%)770(Top 5%)770(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2645

Males

2522

M40-44

2522

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2720

Males

2591

M40-44

2591

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2645

Males

2522

M40-44

2522

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2640

Males

2513

M40-44

2513

20K→Half

12.4 - 13.1 mi

Top 9%
×2stories
+19ft-37ft

Overall

2680

Males

2563

M40-44

2563

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2343

Males

2228

M40-44

2228

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1997

Males

1899

M40-44

1899

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1688

Males

1596

M40-44

1596

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1653

Males

1562

M40-44

1562

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1835

Males

1724

M40-44

1724

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

980

Males

924

M40-44

924

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1038

Males

977

M40-44

977

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1071

Males

1003

M40-44

1003

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1055

Males

973

M40-44

973

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

817

Males

770

M40-44

770

Passing Analysis

Category:
Athletes Passed
1588
Passed By
185
Net Change
+1403
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3238
5K → 10K35431+323#3238#2915
10K → 15K13538+97#2915#2818
15K → 20K11052+58#2818#2760
20K → Half186+12#2760#2748
Half → 25K12420+104#2748#2644
25K → 30K19514+181#2644#2463
30K → 20M1046+98#2463#2365
20M → 21M765+71#2365#2294
21M → 35K435+38#2294#2256
35K → 23M1222+120#2256#2136
23M → 24M1120+112#2136#2024
24M → 40K641+63#2024#1961
40K → 25.2M372+35#1961#1926
25.2M → Finish943+91#1926#1835
TOTALS1588185+1403
📊

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