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BOSTON MARATHON 2025

Christopher Imai

Bib: 17900•M

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 47%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 50%
Division (M55-59)
#0 / 1648
Top 38%
Race Day Weather
50°/40°F
broken 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
7:52/mi
24:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
48:58
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:13:34
↑ 67↓ 78
20K· 12.43 mi
8:04/mi
1:38:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:58/mi
1:44:05
↑ 19↓ 370.5%
25K· 15.53 mi
8:07/mi
2:03:46
↑ 66↓ 880.2%
30K· 18.64 mi
8:16/mi
2:29:26
↑ 181↓ 1480.2%
20M
8:07/mi
2:40:28
↑ 64↓ 500.2%
21M
8:37/mi
2:49:05
↑ 106↓ 241.6%
35K· 21.75 mi
7:53/mi
2:54:59
↑ 17↓ 861.7%
23M
8:03/mi
3:05:04
↑ 23↓ 630.6%
24M
8:04/mi
3:13:08
↓ 821.3%
40K· 24.85 mi
7:58/mi
3:19:57
↓ 200.3%
25.2M
8:36/mi
3:22:55
↑ 13↓ 160.2%
Finish· 26.22 mi
7:19/mi
3:30:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:05
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:46:17
Pace8:06 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5224:277:5224:27
7:52
-
10K
6.21 mi11:39:2348:587:5324:31
7:53
+0:01
15K
9.32 mi12:03:591:13:347:5424:36
7:55
+0:02
20K
12.43 mi12:29:041:38:397:5625:05
8:04
+0:09
Half
13.11 mi12:34:301:44:057:565:26
7:58
-0:06
25K
15.53 mi12:54:112:03:467:5819:41
8:07
+0:09
30K
18.64 mi13:19:512:29:268:0125:40
8:16
+0:09
20M
20.00 mi13:30:532:40:288:0111:02
8:07
-0:09
21M
21.00 mi13:39:302:49:058:038:37
8:37
+0:30
35K
21.75 mi13:45:242:54:598:035:54
7:53
-0:44
23M
23.00 mi13:55:293:05:048:0310:05
8:03
+0:10
24M
24.00 mi14:03:333:13:088:038:04
8:04
+0:01
40K
24.85 mi14:10:223:19:578:036:49
7:58
-0:06
25.2M
25.20 mi14:13:203:22:558:032:58
8:36
+0:38
Finish
26.22 mi14:20:473:30:228:027:27
7:19
-1:17

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

7:19 /mi

Average Pace

8:02 /mi

Slowest Pace

8:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:10

47% of race

Time at Steady Pace

1:51:12

53% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:01 /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 mi11:14:5224:277:5224:27
7:52
#15403
10K
6.21 mi11:39:2348:587:5324:31
7:53
#15478
15K
9.32 mi12:03:591:13:347:5424:36
7:55
#15434
20K
12.43 mi12:29:041:38:397:5625:05
8:04
#15430
Half
13.11 mi12:34:301:44:057:565:26
7:58
#15437
25K
15.53 mi12:54:112:03:467:5819:41
8:07
#15299
30K
18.64 mi13:19:512:29:268:0125:40
8:16
#14861
20M
20.00 mi13:30:532:40:288:0111:02
8:07
#14514
21M
21.00 mi13:39:302:49:058:038:37
8:37
#14293
35K
21.75 mi13:45:242:54:598:035:54
7:53
#14152
23M
23.00 mi13:55:293:05:048:0310:05
8:03
#13885
24M
24.00 mi14:03:333:13:088:038:04
8:04
#13775
40K
24.85 mi14:10:223:19:578:036:49
7:58
#13608
25.2M
25.20 mi14:13:203:22:558:032:58
8:36
#13507
Finish
26.22 mi14:20:473:30:228:027:27
7:19
#13305
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15403105751057515361(Top 54%)10526(Top 65%)10526(Top 639%)
10K6.21 mi3.10 mi15478-7510609-3410609-3415589(Top 55%)10661(Top 66%)10661(Top 647%)
15K9.32 mi3.11 mi15434+4410583+2610583+2615361(Top 54%)10526(Top 65%)10526(Top 639%)
20K12.43 mi3.11 mi15430+410562+2110562+2115432(Top 54%)10505(Top 65%)10505(Top 637%)
Half13.11 mi0.68 mi15437-710559+310559+315542(Top 55%)10570(Top 66%)10570(Top 641%)
25K15.53 mi2.42 mi15299+13810478+8110478+8114741(Top 52%)10088(Top 63%)10088(Top 612%)
30K18.64 mi3.11 mi14861+43810222+25610222+25613230(Top 47%)9237(Top 57%)9237(Top 560%)
20M20.00 mi1.36 mi14514+34710049+17310049+17311244(Top 40%)8163(Top 51%)8163(Top 495%)
21M21.00 mi1.00 mi14293+2219933+1169933+11611192(Top 39%)7977(Top 50%)7977(Top 484%)
35K21.75 mi0.75 mi14152+1419842+919842+9111450(Top 40%)8084(Top 50%)8084(Top 491%)
23M23.00 mi1.25 mi13885+2679687+1559687+15510423(Top 37%)7447(Top 46%)7447(Top 452%)
24M24.00 mi1.00 mi13775+1109600+879600+8711687(Top 41%)8002(Top 50%)8002(Top 486%)
40K24.85 mi0.85 mi13608+1679503+979503+979998(Top 35%)7054(Top 44%)7054(Top 428%)
25.2M25.20 mi0.35 mi13507+1019452+519452+519422(Top 33%)6674(Top 41%)6674(Top 405%)
Finish26.22 mi1.02 mi13305+2029346+1069346+1067854(Top 28%)5832(Top 36%)5832(Top 354%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15361

Males

10526

M55-59

10526

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

15589

Males

10661

M55-59

10661

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15361

Males

10526

M55-59

10526

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

15432

Males

10505

M55-59

10505

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

15542

Males

10570

M55-59

10570

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14741

Males

10088

M55-59

10088

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13230

Males

9237

M55-59

9237

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

11244

Males

8163

M55-59

8163

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

11192

Males

7977

M55-59

7977

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11450

Males

8084

M55-59

8084

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10423

Males

7447

M55-59

7447

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11687

Males

8002

M55-59

8002

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9998

Males

7054

M55-59

7054

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9422

Males

6674

M55-59

6674

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7854

Males

5832

M55-59

5832

Passing Analysis

Category:
Athletes Passed
3119
Passed By
1021
Net Change
+2098
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15403
5K → 10K283358-75#15403#15478
10K → 15K216172+44#15478#15434
15K → 20K211207+4#15434#15430
20K → Half3441-7#15430#15437
Half → 25K23294+138#15437#15299
25K → 30K49355+438#15299#14861
30K → 20M3547+347#14861#14514
20M → 21M23413+221#14514#14293
21M → 35K15312+141#14293#14152
35K → 23M28114+267#14152#13885
23M → 24M14232+110#13885#13775
24M → 40K1769+167#13775#13608
40K → 25.2M1054+101#13608#13507
25.2M → Finish2053+202#13507#13305
TOTALS31191021+2098
📊

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