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BOSTON MARATHON 2025

Christopher Irwin

Bib: 9378•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 32%
Gender (Male)
#0 / 16105
Top 45%
Masters (Masters Men)
#0 / 10463
Top 33%
Division (M50-54)
#0 / 1996
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:02
Rank: #8550
Start → 5K
22:02 | 7:06/mi
10K· 6.21 mi
43:41
Rank: #8090 (+460)
5K → 10K
21:39 | 6:58/mi
15K· 9.32 mi
1:05:29
Rank: #7940 (+150)
10K → 15K
21:48 | 7:01/mi
20K· 12.43 mi
1:27:52
Rank: #7967 (-27)
15K → 20K
22:23 | 7:12/mi
Half· 13.11 mi
1:32:45
Rank: #7996 (-29)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:50:45
Rank: #8135 (-139)
Half → 25K
18:00 | 7:25/mi
30K· 18.64 mi
2:15:01
Rank: #8375 (-240)
25K → 30K
24:16 | 7:49/mi
20M
2:25:55
Rank: #8490 (-115)
30K → 20M
10:54 | 8:01/mi
21M
2:34:15
Rank: #8502 (-12)
20M → 21M
8:20 | 8:20/mi
35K· 21.75 mi
2:40:20
Rank: #8672 (-170)
21M → 35K
6:05 | 8:08/mi
23M
2:50:48
Rank: #8872 (-200)
35K → 23M
10:28 | 8:22/mi
24M
2:59:09
Rank: #9068 (-196)
23M → 24M
8:21 | 8:21/mi
40K· 24.85 mi
3:06:16
Rank: #9187 (-119)
24M → 40K
7:07 | 8:19/mi
25.2M
3:09:17
Rank: #9189 (-2)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:16:46
Rank: #9117 (+72)
25.2M → Finish
7:29 | 7:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:45
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:44:01
Pace7:56 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3322:027:0622:02
7:06
-
10K
6.21 mi11:09:1243:417:0221:39
6:58
-0:08
15K
9.32 mi11:31:001:05:297:0221:48
7:01
+0:03
20K
12.43 mi11:53:231:27:527:0422:23
7:12
+0:11
Half
13.11 mi11:58:161:32:457:044:53
7:09
-0:03
25K
15.53 mi12:16:161:50:457:0818:00
7:25
+0:16
30K
18.64 mi12:40:322:15:017:1524:16
7:49
+0:24
20M
20.00 mi12:51:262:25:557:1810:54
8:01
+0:12
21M
21.00 mi12:59:462:34:157:218:20
8:20
+0:19
35K
21.75 mi13:05:512:40:207:226:05
8:08
-0:12
23M
23.00 mi13:16:192:50:487:2610:28
8:22
+0:14
24M
24.00 mi13:24:402:59:097:288:21
8:21
-0:01
40K
24.85 mi13:31:473:06:167:307:07
8:19
-0:02
25.2M
25.20 mi13:34:483:09:177:313:01
8:45
+0:26
Finish
26.22 mi13:42:173:16:467:317:29
7:21
-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

6:58 /mi

Average Pace

7:31 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:14

60% of race

Time at Steady Pace

35:10

18% of race

Time at Slower Pace

43:22

22% of race

Average Pace: 7:30 /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 mi10:47:3322:027:0622:02
7:06
#8550
10K
6.21 mi11:09:1243:417:0221:39
6:58
#8090
15K
9.32 mi11:31:001:05:297:0221:48
7:01
#7940
20K
12.43 mi11:53:231:27:527:0422:23
7:12
#7967
Half
13.11 mi11:58:161:32:457:044:53
7:09
#7996
25K
15.53 mi12:16:161:50:457:0818:00
7:25
#8135
30K
18.64 mi12:40:322:15:017:1524:16
7:49
#8375
20M
20.00 mi12:51:262:25:557:1810:54
8:01
#8490
21M
21.00 mi12:59:462:34:157:218:20
8:20
#8502
35K
21.75 mi13:05:512:40:207:226:05
8:08
#8672
23M
23.00 mi13:16:192:50:487:2610:28
8:22
#8872
24M
24.00 mi13:24:402:59:097:288:21
8:21
#9068
40K
24.85 mi13:31:473:06:167:307:07
8:19
#9187
25.2M
25.20 mi13:34:483:09:177:313:01
8:45
#9189
Finish
26.22 mi13:42:173:16:467:317:29
7:21
#9117
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8550735173517735(Top 27%)6768(Top 42%)6768(Top 339%)
10K6.21 mi3.10 mi8090+4607045+3067045+3067714(Top 27%)6787(Top 42%)6787(Top 340%)
15K9.32 mi3.11 mi7940+1506944+1016944+1017735(Top 27%)6768(Top 42%)6768(Top 339%)
20K12.43 mi3.11 mi7967-276931+136931+138247(Top 29%)7019(Top 44%)7019(Top 352%)
Half13.11 mi0.68 mi7996-296952-216952-218709(Top 31%)7321(Top 45%)7321(Top 367%)
25K15.53 mi2.42 mi8135-1397006-547006-549324(Top 33%)7515(Top 47%)7515(Top 377%)
30K18.64 mi3.11 mi8375-2407107-1017107-10110014(Top 35%)7693(Top 48%)7693(Top 385%)
20M20.00 mi1.36 mi8490-1157144-377144-3710557(Top 37%)7810(Top 48%)7810(Top 391%)
21M21.00 mi1.00 mi8502-127114+307114+309411(Top 33%)7047(Top 44%)7047(Top 353%)
35K21.75 mi0.75 mi8672-1707192-787192-7813092(Top 46%)8828(Top 55%)8828(Top 442%)
23M23.00 mi1.25 mi8872-2007260-687260-6812386(Top 44%)8403(Top 52%)8403(Top 421%)
24M24.00 mi1.00 mi9068-1967347-877347-8713534(Top 48%)8906(Top 55%)8906(Top 446%)
40K24.85 mi0.85 mi9187-1197374-277374-2712253(Top 43%)8160(Top 51%)8160(Top 409%)
25.2M25.20 mi0.35 mi9189-27355+197355+1910227(Top 36%)7051(Top 44%)7051(Top 353%)
Finish26.22 mi1.02 mi9117+727277+787277+788062(Top 28%)5947(Top 37%)5947(Top 298%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7735

Males

6768

M50-54

6768

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7714

Males

6787

M50-54

6787

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7735

Males

6768

M50-54

6768

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8247

Males

7019

M50-54

7019

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8709

Males

7321

M50-54

7321

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

9324

Males

7515

M50-54

7515

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

10014

Males

7693

M50-54

7693

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

10557

Males

7810

M50-54

7810

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

9411

Males

7047

M50-54

7047

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

13092

Males

8828

M50-54

8828

35K→23M

21.8 - 23.0 mi

Top 44%
×5stories
+23ft-63ft

Overall

12386

Males

8403

M50-54

8403

23M→24M

23.0 - 24.0 mi

Top 48%
×6stories
+12ft-82ft

Overall

13534

Males

8906

M50-54

8906

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12253

Males

8160

M50-54

8160

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10227

Males

7051

M50-54

7051

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

8062

Males

5947

M50-54

5947

Passing Analysis

Category:
Athletes Passed
1585
Passed By
2152
Net Change
-567
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8550
5K → 10K52464+460#8550#8090
10K → 15K22070+150#8090#7940
15K → 20K126153-27#7940#7967
20K → Half1847-29#7967#7996
Half → 25K94233-139#7996#8135
25K → 30K120360-240#8135#8375
30K → 20M69184-115#8375#8490
20M → 21M90102-12#8490#8502
21M → 35K23193-170#8502#8672
35K → 23M70270-200#8672#8872
23M → 24M25221-196#8872#9068
24M → 40K52171-119#9068#9187
40K → 25.2M3840-2#9187#9189
25.2M → Finish11644+72#9189#9117
TOTALS15852152-567
📊

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