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BOSTON MARATHON 2025

Kelly Gross

Bib: 10641•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 34%
Gender (Female)
#0 / 12228
Top 17%
Division (F18-39)
#0 / 5469
Top 31%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:05
Rank: #11626
Start → 5K
23:05 | 7:26/mi
10K· 6.21 mi
46:12
Rank: #11577 (+49)
5K → 10K
23:07 | 7:26/mi
15K· 9.32 mi
1:09:26
Rank: #11530 (+47)
10K → 15K
23:14 | 7:29/mi
20K· 12.43 mi
1:33:02
Rank: #11524 (+6)
15K → 20K
23:36 | 7:36/mi
Half· 13.11 mi
1:38:09
Rank: #11527 (-3)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:56:40
Rank: #11424 (+103)
Half → 25K
18:31 | 7:38/mi
30K· 18.64 mi
2:20:56
Rank: #11116 (+308)
25K → 30K
24:16 | 7:49/mi
20M
2:31:33
Rank: #10915 (+201)
30K → 20M
10:37 | 7:49/mi
21M
2:39:25
Rank: #10612 (+303)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:44:57
Rank: #10483 (+129)
21M → 35K
5:32 | 7:24/mi
23M
2:54:33
Rank: #10265 (+218)
35K → 23M
9:36 | 7:40/mi
24M
3:02:08
Rank: #10132 (+133)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:08:42
Rank: #10011 (+121)
24M → 40K
6:34 | 7:41/mi
25.2M
3:11:32
Rank: #9939 (+72)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:18:49
Rank: #9766 (+173)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:09
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:40:40
Pace7:41 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0223:057:2623:05
7:26
-
10K
6.21 mi11:12:0946:127:2623:07
7:26
0:00
15K
9.32 mi11:35:231:09:267:2723:14
7:29
+0:03
20K
12.43 mi11:58:591:33:027:2923:36
7:36
+0:07
Half
13.11 mi12:04:061:38:097:295:07
7:30
-0:06
25K
15.53 mi12:22:371:56:407:3118:31
7:38
+0:08
30K
18.64 mi12:46:532:20:567:3424:16
7:49
+0:11
20M
20.00 mi12:57:302:31:337:3510:37
7:49
0:00
21M
21.00 mi13:05:222:39:257:357:52
7:52
+0:03
35K
21.75 mi13:10:542:44:577:355:32
7:24
-0:28
23M
23.00 mi13:20:302:54:337:359:36
7:40
+0:16
24M
24.00 mi13:28:053:02:087:357:35
7:35
-0:05
40K
24.85 mi13:34:393:08:427:366:34
7:41
+0:06
25.2M
25.20 mi13:37:293:11:327:362:50
8:13
+0:32
Finish
26.22 mi13:44:463:18:497:357:17
7:09
-1:04

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

7:09 /mi

Average Pace

7:35 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:07

95% of race

Time at Steady Pace

10:42

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:35 /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 mi10:49:0223:057:2623:05
7:26
#11626
10K
6.21 mi11:12:0946:127:2623:07
7:26
#11577
15K
9.32 mi11:35:231:09:267:2723:14
7:29
#11530
20K
12.43 mi11:58:591:33:027:2923:36
7:36
#11524
Half
13.11 mi12:04:061:38:097:295:07
7:30
#11527
25K
15.53 mi12:22:371:56:407:3118:31
7:38
#11424
30K
18.64 mi12:46:532:20:567:3424:16
7:49
#11116
20M
20.00 mi12:57:302:31:337:3510:37
7:49
#10915
21M
21.00 mi13:05:222:39:257:357:52
7:52
#10612
35K
21.75 mi13:10:542:44:577:355:32
7:24
#10483
23M
23.00 mi13:20:302:54:337:359:36
7:40
#10265
24M
24.00 mi13:28:053:02:087:357:35
7:35
#10132
40K
24.85 mi13:34:393:08:427:366:34
7:41
#10011
25.2M
25.20 mi13:37:293:11:327:362:50
8:13
#9939
Finish
26.22 mi13:44:463:18:497:357:17
7:09
#9766
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi116262590259011585(Top 41%)2677(Top 22%)2677(Top 49%)
10K6.21 mi3.10 mi11577+492589+12589+111563(Top 41%)2596(Top 21%)2596(Top 47%)
15K9.32 mi3.11 mi11530+472593-42593-411585(Top 41%)2677(Top 22%)2677(Top 49%)
20K12.43 mi3.11 mi11524+62624-312624-3111577(Top 41%)2768(Top 23%)2768(Top 51%)
Half13.11 mi0.68 mi11527-32626-22626-211732(Top 41%)2771(Top 23%)2771(Top 51%)
25K15.53 mi2.42 mi11424+1032604+222604+2211039(Top 39%)2604(Top 21%)2604(Top 48%)
30K18.64 mi3.11 mi11116+3082525+792525+7910039(Top 35%)2306(Top 19%)2306(Top 42%)
20M20.00 mi1.36 mi10915+2012462+632462+639136(Top 32%)2041(Top 17%)2041(Top 37%)
21M21.00 mi1.00 mi10612+3032349+1132349+1136622(Top 23%)1166(Top 10%)1166(Top 21%)
35K21.75 mi0.75 mi10483+1292300+492300+497953(Top 28%)1670(Top 14%)1670(Top 31%)
23M23.00 mi1.25 mi10265+2182248+522248+527730(Top 27%)1708(Top 14%)1708(Top 31%)
24M24.00 mi1.00 mi10132+1332206+422206+428335(Top 29%)2027(Top 17%)2027(Top 37%)
40K24.85 mi0.85 mi10011+1212178+282178+287996(Top 28%)1988(Top 16%)1988(Top 36%)
25.2M25.20 mi0.35 mi9939+722159+192159+197248(Top 26%)1764(Top 14%)1764(Top 32%)
Finish26.22 mi1.02 mi9766+1732119+402119+406735(Top 24%)1556(Top 13%)1556(Top 28%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

11585

Females

2677

F18-39

2677

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11563

Females

2596

F18-39

2596

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

11585

Females

2677

F18-39

2677

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

11577

Females

2768

F18-39

2768

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11732

Females

2771

F18-39

2771

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

11039

Females

2604

F18-39

2604

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

10039

Females

2306

F18-39

2306

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

9136

Females

2041

F18-39

2041

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6622

Females

1166

F18-39

1166

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7953

Females

1670

F18-39

1670

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7730

Females

1708

F18-39

1708

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8335

Females

2027

F18-39

2027

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7996

Females

1988

F18-39

1988

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7248

Females

1764

F18-39

1764

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6735

Females

1556

F18-39

1556

Passing Analysis

Category:
Athletes Passed
2737*
Passed By
877
Net Change
+1860
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11626
5K → 10K271222+49#11626#11577
10K → 15K200153+47#11577#11530
15K → 20K194188+6#11530#11524
20K → Half2528-3#11524#11527
Half → 25K203100+103#11527#11424
25K → 30K39385+308#11424#11116
30K → 20M22221+201#11116#10915
20M → 21M3074+303#10915#10612
21M → 35K1334+129#10612#10483
35K → 23M23517+218#10483#10265
23M → 24M14916+133#10265#10132
24M → 40K14524+121#10132#10011
40K → 25.2M75*3+72#10011#9939
25.2M → Finish18512+173#9939#9766
TOTALS2737*877+1860

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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