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BOSTON MARATHON 2025

Grace Kim

Bib: 21949•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 45%
Division (F60-64)
#0 / 624
Top 11%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:25
Rank: #19900
Start → 5K
26:25 | 8:30/mi
10K· 6.21 mi
54:52
Rank: #21601 (-1701)
5K → 10K
28:27 | 9:09/mi
15K· 9.32 mi
1:21:53
Rank: #21173 (+428)
10K → 15K
27:01 | 8:42/mi
20K· 12.43 mi
1:48:30
Rank: #20587 (+586)
15K → 20K
26:37 | 8:34/mi
Half· 13.11 mi
1:54:12
Rank: #20472 (+115)
20K → Half
5:42 | 8:21/mi
25K· 15.53 mi
2:15:02
Rank: #20022 (+450)
Half → 25K
20:50 | 8:36/mi
30K· 18.64 mi
2:42:33
Rank: #19433 (+589)
25K → 30K
27:31 | 8:51/mi
20M
2:54:21
Rank: #19113 (+320)
30K → 20M
11:48 | 8:41/mi
21M
3:03:45
Rank: #18909 (+204)
20M → 21M
9:24 | 9:24/mi
35K· 21.75 mi
3:10:05
Rank: #18772 (+137)
21M → 35K
6:20 | 8:28/mi
23M
3:21:03
Rank: #18529 (+243)
35K → 23M
10:58 | 8:46/mi
24M
3:29:34
Rank: #18339 (+190)
23M → 24M
8:31 | 8:31/mi
40K· 24.85 mi
3:37:05
Rank: #18215 (+124)
24M → 40K
7:31 | 8:47/mi
25.2M
3:40:22
Rank: #18170 (+45)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:49:08
Rank: #18114 (+56)
25.2M → Finish
8:46 | 8:36/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:54:12
Pace8:43 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:54:56
Pace8:46 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:4426:258:3026:25
8:30
-
10K
6.21 mi12:10:1154:528:5028:27
9:09
+0:39
15K
9.32 mi12:37:121:21:538:4727:01
8:42
-0:27
20K
12.43 mi13:03:491:48:308:4426:37
8:34
-0:08
Half
13.11 mi13:09:311:54:128:435:42
8:21
-0:13
25K
15.53 mi13:30:212:15:028:4220:50
8:36
+0:15
30K
18.64 mi13:57:522:42:338:4327:31
8:51
+0:15
20M
20.00 mi14:09:402:54:218:4311:48
8:41
-0:10
21M
21.00 mi14:19:043:03:458:459:24
9:24
+0:43
35K
21.75 mi14:25:243:10:058:446:20
8:28
-0:56
23M
23.00 mi14:36:223:21:038:4410:58
8:46
+0:18
24M
24.00 mi14:44:533:29:348:448:31
8:31
-0:15
40K
24.85 mi14:52:243:37:058:447:31
8:47
+0:16
25.2M
25.20 mi14:55:413:40:228:453:17
9:31
+0:44
Finish
26.22 mi15:04:273:49:088:458:46
8:36
-0:55

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

8:21 /mi

Average Pace

8:45 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:36:27

94% of race

Time at Steady Pace

12:41

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:44 /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 mi11:41:4426:258:3026:25
8:30
#19900
10K
6.21 mi12:10:1154:528:5028:27
9:09
#21601
15K
9.32 mi12:37:121:21:538:4727:01
8:42
#21173
20K
12.43 mi13:03:491:48:308:4426:37
8:34
#20587
Half
13.11 mi13:09:311:54:128:435:42
8:21
#20472
25K
15.53 mi13:30:212:15:028:4220:50
8:36
#20022
30K
18.64 mi13:57:522:42:338:4327:31
8:51
#19433
20M
20.00 mi14:09:402:54:218:4311:48
8:41
#19113
21M
21.00 mi14:19:043:03:458:459:24
9:24
#18909
35K
21.75 mi14:25:243:10:058:446:20
8:28
#18772
23M
23.00 mi14:36:223:21:038:4410:58
8:46
#18529
24M
24.00 mi14:44:533:29:348:448:31
8:31
#18339
40K
24.85 mi14:52:243:37:058:447:31
8:47
#18215
25.2M
25.20 mi14:55:413:40:228:453:17
9:31
#18170
Finish
26.22 mi15:04:273:49:088:458:46
8:36
#18114
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi199007443744320466(Top 72%)7687(Top 63%)7687(Top 1232%)
10K6.21 mi3.10 mi21601-17018387-9448387-94423031(Top 81%)9150(Top 75%)9150(Top 1466%)
15K9.32 mi3.11 mi21173+4288131+2568131+25620466(Top 72%)7687(Top 63%)7687(Top 1232%)
20K12.43 mi3.11 mi20587+5867808+3237808+32318655(Top 66%)6721(Top 55%)6721(Top 1077%)
Half13.11 mi0.68 mi20472+1157748+607748+6018363(Top 65%)6540(Top 53%)6540(Top 1048%)
25K15.53 mi2.42 mi20022+4507493+2557493+25517780(Top 63%)6300(Top 52%)6300(Top 1010%)
30K18.64 mi3.11 mi19433+5897203+2907203+29016942(Top 60%)6001(Top 49%)6001(Top 962%)
20M20.00 mi1.36 mi19113+3207044+1597044+15914993(Top 53%)5052(Top 41%)5052(Top 810%)
21M21.00 mi1.00 mi18909+2046954+906954+9015652(Top 55%)5545(Top 45%)5545(Top 889%)
35K21.75 mi0.75 mi18772+1376894+606894+6015318(Top 54%)5429(Top 44%)5429(Top 870%)
23M23.00 mi1.25 mi18529+2436783+1116783+11114920(Top 53%)5300(Top 43%)5300(Top 849%)
24M24.00 mi1.00 mi18339+1906704+796704+7914667(Top 52%)5203(Top 43%)5203(Top 834%)
40K24.85 mi0.85 mi18215+1246664+406664+4015183(Top 53%)5627(Top 46%)5627(Top 902%)
25.2M25.20 mi0.35 mi18170+456654+106654+1014790(Top 52%)5460(Top 45%)5460(Top 875%)
Finish26.22 mi1.02 mi18114+566631+236631+2316883(Top 59%)6505(Top 53%)6505(Top 1042%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

20466

Females

7687

F60-64

7687

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

23031

Females

9150

F60-64

9150

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

20466

Females

7687

F60-64

7687

15K→20K

9.3 - 12.4 mi

Top 66%
×5stories
+106ft-86ft

Overall

18655

Females

6721

F60-64

6721

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18363

Females

6540

F60-64

6540

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

17780

Females

6300

F60-64

6300

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

16942

Females

6001

F60-64

6001

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14993

Females

5052

F60-64

5052

20M→21M

20.0 - 21.0 mi

Top 55%
×8stories
+106ft-24ft

Overall

15652

Females

5545

F60-64

5545

21M→35K

21.0 - 21.8 mi

Top 54%
×7stories
+17ft-86ft

Overall

15318

Females

5429

F60-64

5429

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

14920

Females

5300

F60-64

5300

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

14667

Females

5203

F60-64

5203

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15183

Females

5627

F60-64

5627

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

14790

Females

5460

F60-64

5460

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2stories
+22ft-21ft

Overall

16883

Females

6505

F60-64

6505

Passing Analysis

Category:
Athletes Passed
3680
Passed By
1894
Net Change
+1786
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19900
5K → 10K201721-1701#19900#21601
10K → 15K47547+428#21601#21173
15K → 20K5926+586#21173#20587
20K → Half1194+115#20587#20472
Half → 25K46111+450#20472#20022
25K → 30K60314+589#20022#19433
30K → 20M3222+320#19433#19113
20M → 21M21612+204#19113#18909
21M → 35K1414+137#18909#18772
35K → 23M2518+243#18772#18529
23M → 24M1944+190#18529#18339
24M → 40K14016+124#18339#18215
40K → 25.2M549+45#18215#18170
25.2M → Finish9236+56#18170#18114
TOTALS36801894+1786
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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