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BOSTON MARATHON 2025

Giseung Shin

Bib: 14171•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 28%
Division (M50-54)
#0 / 1996
Top 25%
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
7:14/mi
22:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:03/mi
44:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:08/mi
1:06:34
↑ 67↓ 78
20K· 12.43 mi
7:22/mi
1:29:27
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:34:26
↑ 19↓ 370.5%
25K· 15.53 mi
7:24/mi
1:52:22
↑ 66↓ 880.2%
30K· 18.64 mi
7:36/mi
2:15:59
↑ 181↓ 1480.2%
20M
7:32/mi
2:26:13
↑ 64↓ 500.2%
21M
8:02/mi
2:34:15
↑ 106↓ 241.6%
35K· 21.75 mi
7:09/mi
2:39:36
↑ 17↓ 861.7%
23M
7:34/mi
2:49:05
↑ 23↓ 630.6%
24M
7:19/mi
2:56:24
↓ 821.3%
40K· 24.85 mi
7:22/mi
3:02:42
↓ 200.3%
25.2M
8:07/mi
3:05:30
↑ 13↓ 160.2%
Finish· 26.22 mi
7:19/mi
3:12:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:26
Pace7:12 /mi
2nd Half
Distance13.11 mi
Time1:38:31
Pace7:31 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:1222:297:1422:29
7:14
-
10K
6.21 mi11:35:0644:237:0921:54
7:03
-0:11
15K
9.32 mi11:57:171:06:347:0922:11
7:08
+0:05
20K
12.43 mi12:20:101:29:277:1222:53
7:22
+0:14
Half
13.11 mi12:25:091:34:267:124:59
7:18
-0:04
25K
15.53 mi12:43:051:52:227:1417:56
7:24
+0:06
30K
18.64 mi13:06:422:15:597:1823:37
7:36
+0:12
20M
20.00 mi13:16:562:26:137:1910:14
7:32
-0:04
21M
21.00 mi13:24:582:34:157:218:02
8:02
+0:30
35K
21.75 mi13:30:192:39:367:205:21
7:09
-0:53
23M
23.00 mi13:39:482:49:057:219:29
7:34
+0:25
24M
24.00 mi13:47:072:56:247:217:19
7:19
-0:15
40K
24.85 mi13:53:253:02:427:216:18
7:22
+0:03
25.2M
25.20 mi13:56:133:05:307:222:48
8:07
+0:45
Finish
26.22 mi14:03:403:12:577:227:27
7:19
-0:48

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

7:03 /mi

Average Pace

7:22 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:07

94% of race

Time at Steady Pace

10:50

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:22 /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 mi11:13:1222:297:1422:29
7:14
#9771
10K
6.21 mi11:35:0644:237:0921:54
7:03
#8965
15K
9.32 mi11:57:171:06:347:0922:11
7:08
#8850
20K
12.43 mi12:20:101:29:277:1222:53
7:22
#8959
Half
13.11 mi12:25:091:34:267:124:59
7:18
#9013
25K
15.53 mi12:43:051:52:227:1417:56
7:24
#8973
30K
18.64 mi13:06:422:15:597:1823:37
7:36
#8790
20M
20.00 mi13:16:562:26:137:1910:14
7:32
#8611
21M
21.00 mi13:24:582:34:157:218:02
8:02
#8500
35K
21.75 mi13:30:192:39:367:205:21
7:09
#8377
23M
23.00 mi13:39:482:49:057:219:29
7:34
#8234
24M
24.00 mi13:47:072:56:247:217:19
7:19
#8101
40K
24.85 mi13:53:253:02:427:216:18
7:22
#7976
25.2M
25.20 mi13:56:133:05:307:222:48
8:07
#7934
Finish
26.22 mi14:03:403:12:577:227:27
7:19
#7880
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9771804480448620(Top 30%)7325(Top 45%)7325(Top 367%)
10K6.21 mi3.10 mi8965+8067573+4717573+4718276(Top 29%)7149(Top 44%)7149(Top 358%)
15K9.32 mi3.11 mi8850+1157496+777496+778620(Top 30%)7325(Top 45%)7325(Top 367%)
20K12.43 mi3.11 mi8959-1097537-417537-419577(Top 34%)7776(Top 48%)7776(Top 390%)
Half13.11 mi0.68 mi9013-547569-327569-329942(Top 35%)7964(Top 49%)7964(Top 399%)
25K15.53 mi2.42 mi8973+407512+577512+579101(Top 32%)7393(Top 46%)7393(Top 370%)
30K18.64 mi3.11 mi8790+1837351+1617351+1618448(Top 30%)6847(Top 43%)6847(Top 343%)
20M20.00 mi1.36 mi8611+1797207+1447207+1447205(Top 25%)5968(Top 37%)5968(Top 299%)
21M21.00 mi1.00 mi8500+1117112+957112+957518(Top 26%)5983(Top 37%)5983(Top 300%)
35K21.75 mi0.75 mi8377+1237014+987014+986292(Top 22%)5265(Top 33%)5265(Top 264%)
23M23.00 mi1.25 mi8234+1436889+1256889+1257063(Top 25%)5616(Top 35%)5616(Top 281%)
24M24.00 mi1.00 mi8101+1336762+1276762+1276510(Top 23%)5232(Top 32%)5232(Top 262%)
40K24.85 mi0.85 mi7976+1256654+1086654+1086017(Top 21%)4863(Top 30%)4863(Top 244%)
25.2M25.20 mi0.35 mi7934+426618+366618+366583(Top 23%)5112(Top 32%)5112(Top 256%)
Finish26.22 mi1.02 mi7880+546555+636555+637832(Top 28%)5810(Top 36%)5810(Top 291%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

8620

Males

7325

M50-54

7325

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

8276

Males

7149

M50-54

7149

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

8620

Males

7325

M50-54

7325

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9577

Males

7776

M50-54

7776

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9942

Males

7964

M50-54

7964

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

9101

Males

7393

M50-54

7393

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8448

Males

6847

M50-54

6847

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

7205

Males

5968

M50-54

5968

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

7518

Males

5983

M50-54

5983

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

6292

Males

5265

M50-54

5265

35K→23M

21.8 - 23.0 mi

Top 25%
×5story building
+23ft-63ft

Overall

7063

Males

5616

M50-54

5616

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6510

Males

5232

M50-54

5232

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

6017

Males

4863

M50-54

4863

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6583

Males

5112

M50-54

5112

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7832

Males

5810

M50-54

5810

Passing Analysis

Category:
Athletes Passed
2805
Passed By
914
Net Change
+1891
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9771
5K → 10K83125+806#9771#8965
10K → 15K228113+115#8965#8850
15K → 20K136245-109#8850#8959
20K → Half2276-54#8959#9013
Half → 25K175135+40#9013#8973
25K → 30K309126+183#8973#8790
30K → 20M19920+179#8790#8611
20M → 21M15342+111#8611#8500
21M → 35K1296+123#8500#8377
35K → 23M17835+143#8377#8234
23M → 24M15421+133#8234#8101
24M → 40K1349+125#8101#7976
40K → 25.2M5210+42#7976#7934
25.2M → Finish10551+54#7934#7880
TOTALS2805914+1891
📊

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