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BOSTON MARATHON 2024

Karl Irwin

IL

Bib: 17970 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Division (M55-59)
#0 / 1529
Top 49%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:53/mi
24:30
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:48/mi
48:44
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:48/mi
1:12:59
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:57/mi
1:37:42
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:46/mi
1:43:00
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:24/mi
2:03:22
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:33/mi
2:33:01
↑ 181↓ 1480.2%
138 ft elev
20M
9:30/mi
2:45:55
↑ 64↓ 500.2%
148 ft elev
21M
10:49/mi
2:56:44
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:40/mi
3:03:13
↑ 17↓ 861.7%
156 ft elev
23M
10:12/mi
3:15:59
↑ 23↓ 630.6%
116 ft elev
24M
9:07/mi
3:25:06
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:14/mi
3:33:51
↓ 200.3%
20 ft elev
25.2M
11:36/mi
3:37:51
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:17/mi
3:47:19
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:00
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time2:04:19
Pace9:29 /mi
📊Positive Split: 20.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1524:307:5324:30
7:53
-
10K
6.21 mi11:40:2948:447:5124:14
7:48
-0:05
15K
9.32 mi12:04:441:12:597:5024:15
7:48
0:00
20K
12.43 mi12:29:271:37:427:5224:43
7:57
+0:09
Half
13.11 mi12:34:451:43:007:515:18
7:46
-0:11
25K
15.53 mi12:55:072:03:227:5620:22
8:24
+0:38
30K
18.64 mi13:24:462:33:018:1329:39
9:33
+1:09
20M
20.00 mi13:37:402:45:558:1812:54
9:30
-0:03
21M
21.00 mi13:48:292:56:448:2510:49
10:49
+1:19
35K
21.75 mi13:54:583:03:138:256:29
8:40
-2:09
23M
23.00 mi14:07:443:15:598:3112:46
10:12
+1:32
24M
24.00 mi14:16:513:25:068:339:07
9:07
-1:05
40K
24.85 mi14:25:363:33:518:368:45
10:14
+1:07
25.2M
25.20 mi14:29:363:37:518:394:00
11:36
+1:22
Finish
26.22 mi14:39:043:47:198:419:28
9:17
-2:19

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

7:46 /mi

Average Pace

8:41 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:22

54% of race

Time at Steady Pace

1:07:37

30% of race

Time at Slower Pace

36:20

16% of race

Average Pace: 8:40 /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 mi11:16:1524:307:5324:30
7:53
#13761
10K
6.21 mi11:40:2948:447:5124:14
7:48
#13172
15K
9.32 mi12:04:441:12:597:5024:15
7:48
#12776
20K
12.43 mi12:29:271:37:427:5224:43
7:57
#12353
Half
13.11 mi12:34:451:43:007:515:18
7:46
#12282
25K
15.53 mi12:55:072:03:227:5620:22
8:24
#12279
30K
18.64 mi13:24:462:33:018:1329:39
9:33
#13009
20M
20.00 mi13:37:402:45:558:1812:54
9:30
#13097
21M
21.00 mi13:48:292:56:448:2510:49
10:49
#13314
35K
21.75 mi13:54:583:03:138:256:29
8:40
#13218
23M
23.00 mi14:07:443:15:598:3112:46
10:12
#13481
24M
24.00 mi14:16:513:25:068:339:07
9:07
#13417
40K
24.85 mi14:25:363:33:518:368:45
10:14
#13544
25.2M
25.20 mi14:29:363:37:518:394:00
11:36
#13603
Finish
26.22 mi14:39:043:47:198:419:28
9:17
#13667
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi137619572957211951(Top 47%)8705(Top 60%)8705(Top 569%)
10K6.21 mi3.10 mi13172+5899316+2569316+25612644(Top 49%)9060(Top 62%)9060(Top 593%)
15K9.32 mi3.11 mi12776+3969119+1979119+19711951(Top 47%)8705(Top 60%)8705(Top 569%)
20K12.43 mi3.11 mi12353+4238915+2048915+20411530(Top 45%)8428(Top 58%)8428(Top 551%)
Half13.11 mi0.68 mi12282+718878+378878+3711070(Top 43%)8215(Top 56%)8215(Top 537%)
25K15.53 mi2.42 mi12279+38833+458833+4512509(Top 49%)8702(Top 60%)8702(Top 569%)
30K18.64 mi3.11 mi13009-7309064-2319064-23115621(Top 61%)9837(Top 67%)9837(Top 643%)
20M20.00 mi1.36 mi13097-889030+349030+3414490(Top 57%)9073(Top 62%)9073(Top 593%)
21M21.00 mi1.00 mi13314-2179072-429072-4215796(Top 62%)9539(Top 65%)9539(Top 624%)
35K21.75 mi0.75 mi13218+968996+768996+7611624(Top 45%)7515(Top 52%)7515(Top 491%)
23M23.00 mi1.25 mi13481-2639052-569052-5616091(Top 63%)9609(Top 66%)9609(Top 628%)
24M24.00 mi1.00 mi13417+648976+768976+7612713(Top 50%)7906(Top 54%)7906(Top 517%)
40K24.85 mi0.85 mi13544-1278994-188994-1815797(Top 62%)9363(Top 64%)9363(Top 612%)
25.2M25.20 mi0.35 mi13603-599006-129006-1216279(Top 64%)9563(Top 66%)9563(Top 625%)
Finish26.22 mi1.02 mi13667-649001+59001+515525(Top 61%)9218(Top 63%)9218(Top 603%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

11951

Males

8705

M55-59

8705

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

12644

Males

9060

M55-59

9060

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

11951

Males

8705

M55-59

8705

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

11530

Males

8428

M55-59

8428

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

11070

Males

8215

M55-59

8215

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

12509

Males

8702

M55-59

8702

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

15621

Males

9837

M55-59

9837

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

14490

Males

9073

M55-59

9073

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

15796

Males

9539

M55-59

9539

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

11624

Males

7515

M55-59

7515

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16091

Males

9609

M55-59

9609

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

12713

Males

7906

M55-59

7906

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

15797

Males

9363

M55-59

9363

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

16279

Males

9563

M55-59

9563

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2story building
+22ft-21ft

Overall

15525

Males

9218

M55-59

9218

Passing Analysis

Category:
Athletes Passed
2682
Passed By
2588
Net Change
+94
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13761
5K → 10K67586+589#13761#13172
10K → 15K45660+396#13172#12776
15K → 20K46845+423#12776#12353
20K → Half8918+71#12353#12282
Half → 25K244241+3#12282#12279
25K → 30K109839-730#12279#13009
30K → 20M118206-88#13009#13097
20M → 21M70287-217#13097#13314
21M → 35K11923+96#13314#13218
35K → 23M57320-263#13218#13481
23M → 24M12763+64#13481#13417
24M → 40K58185-127#13417#13544
40K → 25.2M3089-59#13544#13603
25.2M → Finish62126-64#13603#13667
TOTALS26822588+94
📊

Passing Visuals

Category:
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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