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BOSTON MARATHON 2023

Kenneth Fong

Bib: 21447•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
8:55/mi
27:43
↑ 97↓ 3451.5%
10K· 6.21 mi
9:01/mi
55:43
↑ 79↓ 1380.4%
15K· 9.32 mi
9:03/mi
1:23:51
↑ 67↓ 78
20K· 12.43 mi
9:14/mi
1:52:33
↑ 106↓ 860.1%
Half· 13.11 mi
9:02/mi
1:58:43
↑ 19↓ 370.5%
25K· 15.53 mi
9:30/mi
2:21:44
↑ 66↓ 880.2%
30K· 18.64 mi
10:04/mi
2:52:59
↑ 181↓ 1480.2%
20M
10:14/mi
3:06:54
↑ 64↓ 500.2%
21M
10:50/mi
3:17:44
↑ 106↓ 241.6%
35K· 21.75 mi
9:55/mi
3:25:09
↑ 17↓ 861.7%
23M
10:02/mi
3:37:43
↑ 23↓ 630.6%
24M
10:00/mi
3:47:43
↓ 821.3%
40K· 24.85 mi
10:08/mi
3:56:23
↓ 200.3%
25.2M
10:55/mi
4:00:09
↑ 13↓ 160.2%
Finish· 26.22 mi
9:52/mi
4:10:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:43
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:11:29
Pace10:02 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:3827:438:5527:43
8:55
-
10K
6.21 mi11:48:3855:438:5828:00
9:01
+0:06
15K
9.32 mi12:16:461:23:519:0028:08
9:03
+0:02
20K
12.43 mi12:45:281:52:339:0328:42
9:14
+0:11
Half
13.11 mi12:51:381:58:439:036:10
9:02
-0:12
25K
15.53 mi13:14:392:21:449:0723:01
9:30
+0:28
30K
18.64 mi13:45:542:52:599:1731:15
10:04
+0:34
20M
20.00 mi13:59:493:06:549:2113:55
10:14
+0:10
21M
21.00 mi14:10:393:17:449:2510:50
10:50
+0:36
35K
21.75 mi14:18:043:25:099:267:25
9:55
-0:55
23M
23.00 mi14:30:383:37:439:2812:34
10:02
+0:07
24M
24.00 mi14:40:383:47:439:2910:00
10:00
-0:02
40K
24.85 mi14:49:183:56:239:318:40
10:08
+0:08
25.2M
25.20 mi14:53:044:00:099:323:46
10:55
+0:47
Finish
26.22 mi15:03:074:10:129:3310:03
9:52
-1:03

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

8:55 /mi

Average Pace

9:33 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:44

57% of race

Time at Steady Pace

1:19:57

32% of race

Time at Slower Pace

28:31

11% of race

Average Pace: 9:33 /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 mi11:20:3827:438:5527:43
8:55
#20075
10K
6.21 mi11:48:3855:438:5828:00
9:01
#20502
15K
9.32 mi12:16:461:23:519:0028:08
9:03
#20547
20K
12.43 mi12:45:281:52:339:0328:42
9:14
#20605
Half
13.11 mi12:51:381:58:439:036:10
9:02
#20600
25K
15.53 mi13:14:392:21:449:0723:01
9:30
#20661
30K
18.64 mi13:45:542:52:599:1731:15
10:04
#20747
20M
20.00 mi13:59:493:06:549:2113:55
10:14
#20761
21M
21.00 mi14:10:393:17:449:2510:50
10:50
#20743
35K
21.75 mi14:18:043:25:099:267:25
9:55
#20741
23M
23.00 mi14:30:383:37:439:2812:34
10:02
#20687
24M
24.00 mi14:40:383:47:439:2910:00
10:00
#20697
40K
24.85 mi14:49:183:56:239:318:40
10:08
#20665
25.2M
25.20 mi14:53:044:00:099:323:46
10:55
#20662
Finish
26.22 mi15:03:074:10:129:3310:03
9:52
#20686
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi20075121911219120754(Top 78%)12638(Top 83%)12638(Top 1139%)
10K6.21 mi3.10 mi20502-42712447-25612447-25620919(Top 79%)12682(Top 84%)12682(Top 1143%)
15K9.32 mi3.11 mi20547-4512484-3712484-3720754(Top 78%)12638(Top 83%)12638(Top 1139%)
20K12.43 mi3.11 mi20605-5812530-4612530-4620722(Top 78%)12628(Top 83%)12628(Top 1138%)
Half13.11 mi0.68 mi20600+512532-212532-220576(Top 77%)12548(Top 83%)12548(Top 1130%)
25K15.53 mi2.42 mi20661-6112562-3012562-3020805(Top 78%)12616(Top 83%)12616(Top 1137%)
30K18.64 mi3.11 mi20747-8612598-3612598-3621176(Top 80%)12709(Top 84%)12709(Top 1145%)
20M20.00 mi1.36 mi20761-1412586+1212586+1221119(Top 79%)12617(Top 83%)12617(Top 1137%)
21M21.00 mi1.00 mi20743+1812565+2112565+2120456(Top 77%)12262(Top 81%)12262(Top 1105%)
35K21.75 mi0.75 mi20741+212547+1812547+1821022(Top 79%)12495(Top 82%)12495(Top 1126%)
23M23.00 mi1.25 mi20687+5412507+4012507+4020086(Top 75%)12059(Top 79%)12059(Top 1086%)
24M24.00 mi1.00 mi20697-1012503+412503+420771(Top 78%)12330(Top 81%)12330(Top 1111%)
40K24.85 mi0.85 mi20665+3212478+2512478+2520326(Top 76%)12067(Top 80%)12067(Top 1087%)
25.2M25.20 mi0.35 mi20662+312472+612472+620259(Top 76%)12048(Top 79%)12048(Top 1085%)
Finish26.22 mi1.02 mi20686-2412473-112473-121343(Top 80%)12579(Top 83%)12579(Top 1133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20754

Males

12638

M60-64

12638

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

20919

Males

12682

M60-64

12682

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20754

Males

12638

M60-64

12638

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20722

Males

12628

M60-64

12628

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

20576

Males

12548

M60-64

12548

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

20805

Males

12616

M60-64

12616

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21176

Males

12709

M60-64

12709

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

21119

Males

12617

M60-64

12617

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

20456

Males

12262

M60-64

12262

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

21022

Males

12495

M60-64

12495

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

20086

Males

12059

M60-64

12059

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

20771

Males

12330

M60-64

12330

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20326

Males

12067

M60-64

12067

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20259

Males

12048

M60-64

12048

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

21343

Males

12579

M60-64

12579

Passing Analysis

Category:
Athletes Passed
1086
Passed By
1697
Net Change
-611
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20075
5K → 10K127554-427#20075#20502
10K → 15K158203-45#20502#20547
15K → 20K143201-58#20547#20605
20K → Half2823+5#20605#20600
Half → 25K83144-61#20600#20661
25K → 30K124210-86#20661#20747
30K → 20M7185-14#20747#20761
20M → 21M7658+18#20761#20743
21M → 35K3836+2#20743#20741
35K → 23M9743+54#20741#20687
23M → 24M3444-10#20687#20697
24M → 40K5624+32#20697#20665
40K → 25.2M1916+3#20665#20662
25.2M → Finish3256-24#20662#20686
TOTALS10861697-611
📊

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