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BOSTON MARATHON 2025

Tae Kim

VA

Bib: 19025 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:18/mi
25:47
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:27/mi
52:01
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:35/mi
1:18:42
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:41/mi
1:45:42
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:29/mi
1:51:29
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:17/mi
2:13:59
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:09/mi
2:42:25
↑ 181↓ 1480.2%
138 ft elev
20M
9:27/mi
2:55:15
↑ 64↓ 500.2%
148 ft elev
21M
10:04/mi
3:05:19
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:07/mi
3:12:08
↑ 17↓ 861.7%
156 ft elev
23M
9:29/mi
3:24:01
↑ 23↓ 630.6%
116 ft elev
24M
9:33/mi
3:33:34
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:46/mi
3:41:55
↓ 200.3%
20 ft elev
25.2M
10:55/mi
3:45:41
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:45/mi
3:55:37
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:51:298:30 /mi⚡ faster
2nd Half
2:04:089:28 /mi+11.3%
Positive split — 11.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:3225:478:1825:47
8:18
-
10K
6.21 mi11:42:4652:018:2226:14
8:27
+0:09
15K
9.32 mi12:09:271:18:428:2726:41
8:35
+0:08
20K
12.43 mi12:36:271:45:428:3027:00
8:41
+0:06
Half
13.11 mi12:42:141:51:298:305:47
8:29
-0:12
25K
15.53 mi13:04:442:13:598:3822:30
9:17
+0:48
30K
18.64 mi13:33:102:42:258:4328:26
9:09
-0:08
20M
20.00 mi13:46:002:55:158:4612:50
9:27
+0:18
21M
21.00 mi13:56:043:05:198:4910:04
10:04
+0:37
35K
21.75 mi14:02:533:12:088:506:49
9:07
-0:57
23M
23.00 mi14:14:463:24:018:5211:53
9:29
+0:22
24M
24.00 mi14:24:193:33:348:549:33
9:33
+0:04
40K
24.85 mi14:32:403:41:558:568:21
9:46
+0:13
25.2M
25.20 mi14:36:263:45:418:573:46
10:55
+1:09
Finish
26.22 mi14:46:223:55:379:009:56
9:45
-1:10

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

8:18 /mi

Average Pace

9:00 /mi

Slowest Pace

10:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

1:51:29

47% of race

Time at Steady Pace

1:32:01

39% of race

Time at Slower Pace

32:07

14% of race

Average Pace: 8:59 /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 mi11:16:3225:478:1825:47
8:18
#18703
10K
6.21 mi11:42:4652:018:2226:14
8:27
#19066
15K
9.32 mi12:09:271:18:428:2726:41
8:35
#19315
20K
12.43 mi12:36:271:45:428:3027:00
8:41
#19297
Half
13.11 mi12:42:141:51:298:305:47
8:29
#19280
25K
15.53 mi13:04:442:13:598:3822:30
9:17
#19649
30K
18.64 mi13:33:102:42:258:4328:26
9:09
#19383
20M
20.00 mi13:46:002:55:158:4612:50
9:27
#19360
21M
21.00 mi13:56:043:05:198:4910:04
10:04
#19307
35K
21.75 mi14:02:533:12:088:506:49
9:07
#19288
23M
23.00 mi14:14:463:24:018:5211:53
9:29
#19261
24M
24.00 mi14:24:193:33:348:549:33
9:33
#19289
40K
24.85 mi14:32:403:41:558:568:21
9:46
#19311
25.2M
25.20 mi14:36:263:45:418:573:46
10:55
#19321
Finish
26.22 mi14:46:223:55:379:009:56
9:45
#19475
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi187031190611906198561243412434
10K6.21 mi3.10 mi19066-36312069-16312069-163194651226212262
15K9.32 mi3.11 mi19315-24912189-12012189-120198561243412434
20K12.43 mi3.11 mi19297+1812162+2712162+27193591219312193
Half13.11 mi0.68 mi19280+1712152+1012152+10190171205712057
25K15.53 mi2.42 mi19649-36912307-15512307-155210901288712887
30K18.64 mi3.11 mi19383+26612151+15612151+156184121157311573
20M20.00 mi1.36 mi19360+2312118+3312118+33189001164211642
21M21.00 mi1.00 mi19307+5312073+4512073+45185511141411414
35K21.75 mi0.75 mi19288+1912054+1912054+19187491137511375
23M23.00 mi1.25 mi19261+2712012+4212012+42186421128011280
24M24.00 mi1.00 mi19289-2811994+1811994+18197911176611766
40K24.85 mi0.85 mi19311-2211990+411990+4196881165311653
25.2M25.20 mi0.35 mi19321-1011977+1311977+13203591195911959
Finish26.22 mi1.02 mi19475-15412026-4912026-49220661281912819

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

19856

Males

12434

M55-59

12434

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19465

Males

12262

M55-59

12262

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

19856

Males

12434

M55-59

12434

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

19359

Males

12193

M55-59

12193

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

19017

Males

12057

M55-59

12057

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

21090

Males

12887

M55-59

12887

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18412

Males

11573

M55-59

11573

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

18900

Males

11642

M55-59

11642

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

18551

Males

11414

M55-59

11414

21M→35K

21.0 - 21.8 mi

Top 66%
×7story building
+17ft-86ft

Overall

18749

Males

11375

M55-59

11375

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

18642

Males

11280

M55-59

11280

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

19791

Males

11766

M55-59

11766

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19688

Males

11653

M55-59

11653

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20359

Males

11959

M55-59

11959

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22066

Males

12819

M55-59

12819

Passing Analysis

Category:
Athletes Passed
1511
Passed By
2283
Net Change
-772
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18703
5K → 10K141504-363#18703#19066
10K → 15K119368-249#19066#19315
15K → 20K205187+18#19315#19297
20K → Half4528+17#19297#19280
Half → 25K74443-369#19280#19649
25K → 30K35690+266#19649#19383
30K → 20M11390+23#19383#19360
20M → 21M12572+53#19360#19307
21M → 35K5839+19#19307#19288
35K → 23M10780+27#19288#19261
23M → 24M5785-28#19261#19289
24M → 40K5678-22#19289#19311
40K → 25.2M3343-10#19311#19321
25.2M → Finish22176-154#19321#19475
TOTALS15112283-772

Passing Charts

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