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BOSTON MARATHON 2025

Jinhan Choi

Bib: 31845•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
9:45/mi
30:19
↑ 97↓ 3451.5%
10K· 6.21 mi
9:43/mi
1:00:31
↑ 79↓ 1380.4%
15K· 9.32 mi
9:43/mi
1:30:41
↑ 67↓ 78
20K· 12.43 mi
9:52/mi
2:01:21
↑ 106↓ 860.1%
Half· 13.11 mi
9:40/mi
2:07:57
↑ 19↓ 370.5%
25K· 15.53 mi
11:17/mi
2:35:18
↑ 66↓ 880.2%
30K· 18.64 mi
11:26/mi
3:10:48
↑ 181↓ 1480.2%
20M
12:13/mi
3:27:24
↑ 64↓ 500.2%
21M
14:09/mi
3:41:33
↑ 106↓ 241.6%
35K· 21.75 mi
12:02/mi
3:50:33
↑ 17↓ 861.7%
23M
12:28/mi
4:06:09
↑ 23↓ 630.6%
24M
12:13/mi
4:18:22
↓ 821.3%
40K· 24.85 mi
12:58/mi
4:29:27
↓ 200.3%
25.2M
12:31/mi
4:33:46
↑ 13↓ 160.2%
Finish· 26.22 mi
10:34/mi
4:44:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:07:57
Pace9:46 /mi
2nd Half
Distance13.11 mi
Time2:36:35
Pace11:57 /mi
📊Positive Split: 22.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:5830:199:4530:19
9:45
-
10K
6.21 mi12:26:101:00:319:4430:12
9:43
-0:02
15K
9.32 mi12:56:201:30:419:4430:10
9:43
0:00
20K
12.43 mi13:27:002:01:219:4630:40
9:52
+0:09
Half
13.11 mi13:33:362:07:579:466:36
9:40
-0:12
25K
15.53 mi14:00:572:35:1810:0027:21
11:17
+1:37
30K
18.64 mi14:36:273:10:4810:1435:30
11:26
+0:09
20M
20.00 mi14:53:033:27:2410:2216:36
12:13
+0:47
21M
21.00 mi15:07:123:41:3310:3314:09
14:09
+1:56
35K
21.75 mi15:16:123:50:3310:369:00
12:02
-2:07
23M
23.00 mi15:31:484:06:0910:4215:36
12:28
+0:26
24M
24.00 mi15:44:014:18:2210:4612:13
12:13
-0:15
40K
24.85 mi15:55:064:29:2710:5011:05
12:58
+0:45
25.2M
25.20 mi15:59:254:33:4610:524:19
12:31
-0:27
Finish
26.22 mi16:10:114:44:3210:5210:46
10:34
-1:57

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

9:40 /mi

Average Pace

10:52 /mi

Slowest Pace

14:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:43

49% of race

Time at Steady Pace

1:11:51

25% of race

Time at Slower Pace

1:13:58

26% of race

Average Pace: 10:51 /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 mi11:55:5830:199:4530:19
9:45
#24991
10K
6.21 mi12:26:101:00:319:4430:12
9:43
#24837
15K
9.32 mi12:56:201:30:419:4430:10
9:43
#24649
20K
12.43 mi13:27:002:01:219:4630:40
9:52
#24458
Half
13.11 mi13:33:362:07:579:466:36
9:40
#24442
25K
15.53 mi14:00:572:35:1810:0027:21
11:17
#24704
30K
18.64 mi14:36:273:10:4810:1435:30
11:26
#24716
20M
20.00 mi14:53:033:27:2410:2216:36
12:13
#24824
21M
21.00 mi15:07:123:41:3310:3314:09
14:09
#24966
35K
21.75 mi15:16:123:50:3310:369:00
12:02
#25016
23M
23.00 mi15:31:484:06:0910:4215:36
12:28
#25083
24M
24.00 mi15:44:014:18:2210:4612:13
12:13
#25112
40K
24.85 mi15:55:064:29:2710:5011:05
12:58
#25171
25.2M
25.20 mi15:59:254:33:4610:524:19
12:31
#25160
Finish
26.22 mi16:10:114:44:3210:5210:46
10:34
#25144
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24991147241472424313(Top 86%)14402(Top 89%)14402(Top 255%)
10K6.21 mi3.10 mi24837+15414629+9514629+9524669(Top 87%)14551(Top 90%)14551(Top 258%)
15K9.32 mi3.11 mi24649+18814547+8214547+8224313(Top 86%)14402(Top 89%)14402(Top 255%)
20K12.43 mi3.11 mi24458+19114444+10314444+10323948(Top 84%)14212(Top 88%)14212(Top 252%)
Half13.11 mi0.68 mi24442+1614436+814436+824032(Top 85%)14253(Top 89%)14253(Top 253%)
25K15.53 mi2.42 mi24704-26214549-11314549-11325585(Top 90%)14894(Top 92%)14894(Top 264%)
30K18.64 mi3.11 mi24716-1214527+2214527+2224749(Top 87%)14418(Top 90%)14418(Top 256%)
20M20.00 mi1.36 mi24824-10814563-3614563-3625557(Top 90%)14712(Top 91%)14712(Top 261%)
21M21.00 mi1.00 mi24966-14214614-5114614-5126379(Top 93%)15060(Top 94%)15060(Top 267%)
35K21.75 mi0.75 mi25016-5014628-1414628-1425908(Top 91%)14785(Top 92%)14785(Top 262%)
23M23.00 mi1.25 mi25083-6714643-1514643-1525748(Top 91%)14708(Top 91%)14708(Top 261%)
24M24.00 mi1.00 mi25112-2914648-514648-525944(Top 91%)14773(Top 92%)14773(Top 262%)
40K24.85 mi0.85 mi25171-5914668-2014668-2026263(Top 92%)14921(Top 93%)14921(Top 264%)
25.2M25.20 mi0.35 mi25160+1114661+714661+724230(Top 85%)13893(Top 86%)13893(Top 246%)
Finish26.22 mi1.02 mi25144+1614643+1814643+1824427(Top 86%)13998(Top 87%)13998(Top 248%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

24313

Males

14402

M18-39

14402

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

24669

Males

14551

M18-39

14551

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

24313

Males

14402

M18-39

14402

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

23948

Males

14212

M18-39

14212

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

24032

Males

14253

M18-39

14253

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25585

Males

14894

M18-39

14894

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24749

Males

14418

M18-39

14418

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25557

Males

14712

M18-39

14712

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

26379

Males

15060

M18-39

15060

21M→35K

21.0 - 21.8 mi

Top 91%
×7story building
+17ft-86ft

Overall

25908

Males

14785

M18-39

14785

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

25748

Males

14708

M18-39

14708

23M→24M

23.0 - 24.0 mi

Top 91%
×6story building
+12ft-82ft

Overall

25944

Males

14773

M18-39

14773

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26263

Males

14921

M18-39

14921

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24230

Males

13893

M18-39

13893

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2story building
+22ft-21ft

Overall

24427

Males

13998

M18-39

13998

Passing Analysis

Category:
Athletes Passed
1130
Passed By
1283
Net Change
-153
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24991
5K → 10K283129+154#24991#24837
10K → 15K23749+188#24837#24649
15K → 20K23746+191#24649#24458
20K → Half3519+16#24458#24442
Half → 25K38300-262#24442#24704
25K → 30K124136-12#24704#24716
30K → 20M33141-108#24716#24824
20M → 21M16158-142#24824#24966
21M → 35K1161-50#24966#25016
35K → 23M2289-67#25016#25083
23M → 24M2857-29#25083#25112
24M → 40K1574-59#25112#25171
40K → 25.2M176+11#25171#25160
25.2M → Finish3418+16#25160#25144
TOTALS11301283-153
📊

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