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BOSTON MARATHON 2023

Sei Rhee

CA

Bib: 23471 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M65-69)
#0 / 549
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:25/mi
26:09
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:12/mi
51:38
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:27/mi
1:17:53
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:58/mi
1:45:45
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:56/mi
1:51:51
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:23/mi
2:14:37
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
11:56/mi
2:51:40
↑ 181↓ 1480.2%
138 ft elev
20M
10:04/mi
3:05:21
↑ 64↓ 500.2%
148 ft elev
21M
11:43/mi
3:17:04
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:51/mi
3:24:26
↑ 17↓ 861.7%
156 ft elev
23M
10:36/mi
3:37:42
↑ 23↓ 630.6%
116 ft elev
24M
10:17/mi
3:47:59
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:44/mi
3:57:10
↓ 200.3%
20 ft elev
25.2M
12:48/mi
4:01:35
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:04/mi
4:11:51
↑ 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
Time1:51:51
Pace8:32 /mi
2nd Half
Distance13.11 mi
Time2:20:00
Pace10:41 /mi
📊Positive Split: 25.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2826:098:2526:09
8:25
-
10K
6.21 mi11:43:5751:388:1925:29
8:12
-0:13
15K
9.32 mi12:10:121:17:538:2126:15
8:27
+0:15
20K
12.43 mi12:38:041:45:458:3127:52
8:58
+0:31
Half
13.11 mi12:44:101:51:518:326:06
8:56
-0:02
25K
15.53 mi13:06:562:14:378:4022:46
9:23
+0:27
30K
18.64 mi13:43:592:51:409:1337:03
11:56
+2:33
20M
20.00 mi13:57:403:05:219:1613:41
10:04
-1:52
21M
21.00 mi14:09:233:17:049:2311:43
11:43
+1:39
35K
21.75 mi14:16:453:24:269:247:22
9:51
-1:52
23M
23.00 mi14:30:013:37:429:2813:16
10:36
+0:45
24M
24.00 mi14:40:183:47:599:3010:17
10:17
-0:19
40K
24.85 mi14:49:293:57:109:339:11
10:44
+0:27
25.2M
25.20 mi14:53:544:01:359:354:25
12:48
+2:04
Finish
26.22 mi15:04:104:11:519:3710:16
10:04
-2:44

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

8:12 /mi

Average Pace

9:37 /mi

Slowest Pace

12:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:37

53% of race

Time at Steady Pace

54:52

22% of race

Time at Slower Pace

1:02:22

25% of race

Average Pace: 9:36 /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 mi11:18:2826:098:2526:09
8:25
#17003
10K
6.21 mi11:43:5751:388:1925:29
8:12
#16571
15K
9.32 mi12:10:121:17:538:2126:15
8:27
#16893
20K
12.43 mi12:38:041:45:458:3127:52
8:58
#17627
Half
13.11 mi12:44:101:51:518:326:06
8:56
#17758
25K
15.53 mi13:06:562:14:378:4022:46
9:23
#18377
30K
18.64 mi13:43:592:51:409:1337:03
11:56
#20491
20M
20.00 mi13:57:403:05:219:1613:41
10:04
#20513
21M
21.00 mi14:09:233:17:049:2311:43
11:43
#20629
35K
21.75 mi14:16:453:24:269:247:22
9:51
#20633
23M
23.00 mi14:30:013:37:429:2813:16
10:36
#20686
24M
24.00 mi14:40:183:47:599:3010:17
10:17
#20734
40K
24.85 mi14:49:293:57:109:339:11
10:44
#20768
25.2M
25.20 mi14:53:544:01:359:354:25
12:48
#20830
Finish
26.22 mi15:04:104:11:519:3710:16
10:04
#20858
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi17003110581105817457(Top 66%)11251(Top 74%)11251(Top 2049%)
10K6.21 mi3.10 mi16571+43210931+12710931+12716266(Top 61%)10814(Top 71%)10814(Top 1970%)
15K9.32 mi3.11 mi16893-32211024-9311024-9317457(Top 66%)11251(Top 74%)11251(Top 2049%)
20K12.43 mi3.11 mi17627-73411315-29111315-29119558(Top 73%)12127(Top 80%)12127(Top 2209%)
Half13.11 mi0.68 mi17758-13111357-4211357-4220161(Top 76%)12388(Top 82%)12388(Top 2256%)
25K15.53 mi2.42 mi18377-61911606-24911606-24920477(Top 77%)12483(Top 82%)12483(Top 2274%)
30K18.64 mi3.11 mi20491-211412468-86212468-86224411(Top 92%)14162(Top 93%)14162(Top 2580%)
20M20.00 mi1.36 mi20513-2212463+512463+520669(Top 78%)12417(Top 82%)12417(Top 2262%)
21M21.00 mi1.00 mi20629-11612510-4712510-4722253(Top 84%)13088(Top 86%)13088(Top 2384%)
35K21.75 mi0.75 mi20633-412504+612504+620860(Top 78%)12419(Top 82%)12419(Top 2262%)
23M23.00 mi1.25 mi20686-5312506-212506-221540(Top 81%)12704(Top 84%)12704(Top 2314%)
24M24.00 mi1.00 mi20734-4812517-1112517-1121518(Top 81%)12641(Top 83%)12641(Top 2303%)
40K24.85 mi0.85 mi20768-3412525-812525-821800(Top 82%)12736(Top 84%)12736(Top 2320%)
25.2M25.20 mi0.35 mi20830-6212545-2012545-2023699(Top 89%)13637(Top 90%)13637(Top 2484%)
Finish26.22 mi1.02 mi20858-2812548-312548-321954(Top 82%)12837(Top 85%)12837(Top 2338%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

17457

Males

11251

M65-69

11251

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

16266

Males

10814

M65-69

10814

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

17457

Males

11251

M65-69

11251

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19558

Males

12127

M65-69

12127

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20161

Males

12388

M65-69

12388

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

20477

Males

12483

M65-69

12483

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

24411

Males

14162

M65-69

14162

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

20669

Males

12417

M65-69

12417

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

22253

Males

13088

M65-69

13088

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20860

Males

12419

M65-69

12419

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

21540

Males

12704

M65-69

12704

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21518

Males

12641

M65-69

12641

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21800

Males

12736

M65-69

12736

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

23699

Males

13637

M65-69

13637

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21954

Males

12837

M65-69

12837

Passing Analysis

Category:
Athletes Passed
1045
Passed By
4900
Net Change
-3855
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17003
5K → 10K569137+432#17003#16571
10K → 15K100422-322#16571#16893
15K → 20K46780-734#16893#17627
20K → Half10141-131#17627#17758
Half → 25K24643-619#17758#18377
25K → 30K52119-2114#18377#20491
30K → 20M6486-22#20491#20513
20M → 21M39155-116#20513#20629
21M → 35K4145-4#20629#20633
35K → 23M58111-53#20633#20686
23M → 24M2472-48#20686#20734
24M → 40K2963-34#20734#20768
40K → 25.2M365-62#20768#20830
25.2M → Finish3361-28#20830#20858
TOTALS10454900-3855
📊

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