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BOSTON MARATHON 2024

Ko Ihara

Bib: 5120•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 17%
Gender (Male)
#0 / 14578
Top 27%
Masters (Masters Men)
#0 / 9729
Top 15%
Division (M40-44)
#0 / 2009
Top 37%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:55/mi
21:28
↑ 97↓ 3451.5%
10K· 6.21 mi
7:01/mi
43:15
↑ 79↓ 1380.4%
15K· 9.32 mi
7:15/mi
1:05:48
↑ 67↓ 78
20K· 12.43 mi
7:07/mi
1:27:55
↑ 106↓ 860.1%
Half· 13.11 mi
7:11/mi
1:32:49
↑ 19↓ 370.5%
25K· 15.53 mi
7:11/mi
1:50:14
↑ 66↓ 880.2%
30K· 18.64 mi
7:21/mi
2:13:04
↑ 181↓ 1480.2%
20M
7:24/mi
2:23:07
↑ 64↓ 500.2%
21M
7:38/mi
2:30:45
↑ 106↓ 241.6%
35K· 21.75 mi
6:42/mi
2:35:46
↑ 17↓ 861.7%
23M
7:08/mi
2:44:42
↑ 23↓ 630.6%
24M
7:04/mi
2:51:46
↓ 821.3%
40K· 24.85 mi
7:19/mi
2:58:01
↓ 200.3%
25.2M
7:58/mi
3:00:46
↑ 13↓ 160.2%
Finish· 26.22 mi
7:36/mi
3:08:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:49
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:35:42
Pace7:18 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0321:286:5521:28
6:55
-
10K
6.21 mi10:47:5043:156:5821:47
7:01
+0:06
15K
9.32 mi11:10:231:05:487:0422:33
7:15
+0:14
20K
12.43 mi11:32:301:27:557:0422:07
7:07
-0:08
Half
13.11 mi11:37:241:32:497:054:54
7:11
+0:04
25K
15.53 mi11:54:491:50:147:0617:25
7:11
0:00
30K
18.64 mi12:17:392:13:047:0822:50
7:21
+0:10
20M
20.00 mi12:27:422:23:077:0910:03
7:24
+0:03
21M
21.00 mi12:35:202:30:457:117:38
7:38
+0:14
35K
21.75 mi12:40:212:35:467:105:01
6:42
-0:56
23M
23.00 mi12:49:172:44:427:108:56
7:08
+0:26
24M
24.00 mi12:56:212:51:467:097:04
7:04
-0:04
40K
24.85 mi13:02:362:58:017:106:15
7:19
+0:15
25.2M
25.20 mi13:05:213:00:467:102:45
7:58
+0:39
Finish
26.22 mi13:13:063:08:317:127:45
7:36
-0:22

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

6:42 /mi

Average Pace

7:12 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:20

85% of race

Time at Steady Pace

25:26

13% of race

Time at Slower Pace

2:45

1% of race

Average Pace: 7:11 /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 mi10:26:0321:286:5521:28
6:55
#6423
10K
6.21 mi10:47:5043:156:5821:47
7:01
#6564
15K
9.32 mi11:10:231:05:487:0422:33
7:15
#6974
20K
12.43 mi11:32:301:27:557:0422:07
7:07
#6621
Half
13.11 mi11:37:241:32:497:054:54
7:11
#6628
25K
15.53 mi11:54:491:50:147:0617:25
7:11
#6300
30K
18.64 mi12:17:392:13:047:0822:50
7:21
#5784
20M
20.00 mi12:27:422:23:077:0910:03
7:24
#5548
21M
21.00 mi12:35:202:30:457:117:38
7:38
#5277
35K
21.75 mi12:40:212:35:467:105:01
6:42
#5054
23M
23.00 mi12:49:172:44:427:108:56
7:08
#4765
24M
24.00 mi12:56:212:51:467:097:04
7:04
#4579
40K
24.85 mi13:02:362:58:017:106:15
7:19
#4405
25.2M
25.20 mi13:05:213:00:467:102:45
7:58
#4334
Finish
26.22 mi13:13:063:08:317:127:45
7:36
#4343
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6423574657467864(Top 31%)6643(Top 46%)6643(Top 331%)
10K6.21 mi3.10 mi6564-1415838-925838-926717(Top 26%)5920(Top 41%)5920(Top 295%)
15K9.32 mi3.11 mi6974-4106098-2606098-2607864(Top 31%)6643(Top 46%)6643(Top 331%)
20K12.43 mi3.11 mi6621+3535839+2595839+2595901(Top 23%)5246(Top 36%)5246(Top 261%)
Half13.11 mi0.68 mi6628-75840-15840-16777(Top 27%)5822(Top 40%)5822(Top 290%)
25K15.53 mi2.42 mi6300+3285565+2755565+2755193(Top 20%)4615(Top 32%)4615(Top 230%)
30K18.64 mi3.11 mi5784+5165132+4335132+4334412(Top 17%)3924(Top 27%)3924(Top 195%)
20M20.00 mi1.36 mi5548+2364933+1994933+1993912(Top 15%)3485(Top 24%)3485(Top 173%)
21M21.00 mi1.00 mi5277+2714720+2134720+2132923(Top 11%)2637(Top 18%)2637(Top 131%)
35K21.75 mi0.75 mi5054+2234528+1924528+1921939(Top 8%)1797(Top 12%)1797(Top 89%)
23M23.00 mi1.25 mi4765+2894288+2404288+2402369(Top 9%)2141(Top 15%)2141(Top 107%)
24M24.00 mi1.00 mi4579+1864117+1714117+1712555(Top 10%)2272(Top 16%)2272(Top 113%)
40K24.85 mi0.85 mi4405+1743954+1633954+1632847(Top 11%)2471(Top 17%)2471(Top 123%)
25.2M25.20 mi0.35 mi4334+713893+613893+612669(Top 10%)2292(Top 16%)2292(Top 114%)
Finish26.22 mi1.02 mi4343-93873+203873+206157(Top 24%)4410(Top 30%)4410(Top 220%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

7864

Males

6643

M40-44

6643

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

6717

Males

5920

M40-44

5920

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

7864

Males

6643

M40-44

6643

15K→20K

9.3 - 12.4 mi

Top 23%
×5story building
+106ft-86ft

Overall

5901

Males

5246

M40-44

5246

20K→Half

12.4 - 13.1 mi

Top 27%
×2story building
+19ft-37ft

Overall

6777

Males

5822

M40-44

5822

Half→25K

13.1 - 15.5 mi

Top 20%
×4story building
+66ft-88ft

Overall

5193

Males

4615

M40-44

4615

25K→30K

15.5 - 18.6 mi

Top 17%
×9story building
+181ft-148ft

Overall

4412

Males

3924

M40-44

3924

30K→20M

18.6 - 20.0 mi

Top 15%
×5story building
+64ft-50ft

Overall

3912

Males

3485

M40-44

3485

20M→21M

20.0 - 21.0 mi

Top 11%
×8story building
+106ft-24ft

Overall

2923

Males

2637

M40-44

2637

21M→35K

21.0 - 21.8 mi

Top 8%
×7story building
+17ft-86ft

Overall

1939

Males

1797

M40-44

1797

35K→23M

21.8 - 23.0 mi

Top 9%
×5story building
+23ft-63ft

Overall

2369

Males

2141

M40-44

2141

23M→24M

23.0 - 24.0 mi

Top 10%
×6story building
+12ft-82ft

Overall

2555

Males

2272

M40-44

2272

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2847

Males

2471

M40-44

2471

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2669

Males

2292

M40-44

2292

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2story building
+22ft-21ft

Overall

6157

Males

4410

M40-44

4410

Passing Analysis

Category:
Athletes Passed
3011
Passed By
931
Net Change
+2080
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6423
5K → 10K142283-141#6423#6564
10K → 15K53463-410#6564#6974
15K → 20K37522+353#6974#6621
20K → Half2532-7#6621#6628
Half → 25K34517+328#6628#6300
25K → 30K53721+516#6300#5784
30K → 20M24610+236#5784#5548
20M → 21M2732+271#5548#5277
21M → 35K2230+223#5277#5054
35K → 23M2923+289#5054#4765
23M → 24M1926+186#4765#4579
24M → 40K1795+174#4579#4405
40K → 25.2M721+71#4405#4334
25.2M → Finish5766-9#4334#4343
TOTALS3011931+2080
📊

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