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BOSTON MARATHON 2025

Grace Welborn

Bib: 26288•F

MD

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:08
Rank: #21167
Start → 5K
8:44/mi
27:08 split
10K· 6.21 mi
54:43
Rank: #21480 (-313)
5K → 10K
8:53/mi
27:35 split
15K· 9.32 mi
1:22:39
Rank: #21634 (-154)
10K → 15K
8:59/mi
27:56 split
20K· 12.43 mi
1:50:35
Rank: #21442 (+192)
15K → 20K
8:59/mi
27:56 split
Half· 13.11 mi
1:56:31
Rank: #21378 (+64)
20K → Half
8:42/mi
5:56 split
25K· 15.53 mi
2:18:02
Rank: #21025 (+353)
Half → 25K
8:52/mi
21:31 split
30K· 18.64 mi
2:46:38
Rank: #20570 (+455)
25K → 30K
9:12/mi
28:36 split
20M
2:59:06
Rank: #20349 (+221)
30K → 20M
9:10/mi
12:28 split
21M
3:08:27
Rank: #20055 (+294)
20M → 21M
9:21/mi
9:21 split
35K· 21.75 mi
3:15:17
Rank: #20014 (+41)
21M → 35K
9:08/mi
6:50 split
23M
3:26:20
Rank: #19766 (+248)
35K → 23M
8:50/mi
11:03 split
24M
3:34:59
Rank: #19586 (+180)
23M → 24M
8:39/mi
8:39 split
40K· 24.85 mi
3:42:23
Rank: #19403 (+183)
24M → 40K
8:39/mi
7:24 split
25.2M
3:45:49
Rank: #19346 (+57)
40K → 25.2M
9:57/mi
3:26 split
Finish· 26.22 mi
3:54:06
Rank: #19152 (+194)
25.2M → Finish
8:08/mi
8:17 split

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:56:31
Pace8:53 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:57:35
Pace8:58 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:1727:088:4427:08
8:44
-
10K
6.21 mi12:09:5254:438:4827:35
8:53
+0:09
15K
9.32 mi12:37:481:22:398:5227:56
8:59
+0:06
20K
12.43 mi13:05:441:50:358:5427:56
8:59
0:00
Half
13.11 mi13:11:401:56:318:535:56
8:42
-0:17
25K
15.53 mi13:33:112:18:028:5321:31
8:52
+0:10
30K
18.64 mi14:01:472:46:388:5628:36
9:12
+0:20
20M
20.00 mi14:14:152:59:068:5712:28
9:10
-0:02
21M
21.00 mi14:23:363:08:278:589:21
9:21
+0:11
35K
21.75 mi14:30:263:15:178:596:50
9:08
-0:13
23M
23.00 mi14:41:293:26:208:5811:03
8:50
-0:18
24M
24.00 mi14:50:083:34:598:578:39
8:39
-0:11
40K
24.85 mi14:57:323:42:238:577:24
8:39
0:00
25.2M
25.20 mi15:00:583:45:498:583:26
9:57
+1:18
Finish
26.22 mi15:09:153:54:068:568:17
8:08
-1:49

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

8:08 /mi

Average Pace

8:56 /mi

Slowest Pace

9:57 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

24:20

10% of race

Time at Steady Pace

2:29:05

64% of race

Time at Slower Pace

1:00:41

26% of race

Average Pace: 8:56 /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 mi11:42:1727:088:4427:08
8:44
#21167
10K
6.21 mi12:09:5254:438:4827:35
8:53
#21480
15K
9.32 mi12:37:481:22:398:5227:56
8:59
#21634
20K
12.43 mi13:05:441:50:358:5427:56
8:59
#21442
Half
13.11 mi13:11:401:56:318:535:56
8:42
#21378
25K
15.53 mi13:33:112:18:028:5321:31
8:52
#21025
30K
18.64 mi14:01:472:46:388:5628:36
9:12
#20570
20M
20.00 mi14:14:152:59:068:5712:28
9:10
#20349
21M
21.00 mi14:23:363:08:278:589:21
9:21
#20055
35K
21.75 mi14:30:263:15:178:596:50
9:08
#20014
23M
23.00 mi14:41:293:26:208:5811:03
8:50
#19766
24M
24.00 mi14:50:083:34:598:578:39
8:39
#19586
40K
24.85 mi14:57:323:42:238:577:24
8:39
#19403
25.2M
25.20 mi15:00:583:45:498:583:26
9:57
#19346
Finish
26.22 mi15:09:153:54:068:568:17
8:08
#19152
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi211678172817221990(Top 77%)8541(Top 70%)8541(Top 156%)
10K6.21 mi3.10 mi21480-3138327-1558327-15521802(Top 77%)8478(Top 69%)8478(Top 155%)
15K9.32 mi3.11 mi21634-1548387-608387-6021990(Top 77%)8541(Top 70%)8541(Top 156%)
20K12.43 mi3.11 mi21442+1928283+1048283+10420917(Top 74%)8002(Top 65%)8002(Top 146%)
Half13.11 mi0.68 mi21378+648246+378246+3720369(Top 72%)7670(Top 63%)7670(Top 140%)
25K15.53 mi2.42 mi21025+3538051+1958051+19519315(Top 68%)7152(Top 58%)7152(Top 131%)
30K18.64 mi3.11 mi20570+4557853+1987853+19818665(Top 66%)6931(Top 57%)6931(Top 127%)
20M20.00 mi1.36 mi20349+2217748+1057748+10517682(Top 62%)6526(Top 53%)6526(Top 119%)
21M21.00 mi1.00 mi20055+2947605+1437605+14315443(Top 54%)5426(Top 44%)5426(Top 99%)
35K21.75 mi0.75 mi20014+417601+47601+418907(Top 67%)7404(Top 61%)7404(Top 135%)
23M23.00 mi1.25 mi19766+2487489+1127489+11215285(Top 54%)5495(Top 45%)5495(Top 100%)
24M24.00 mi1.00 mi19586+1807414+757414+7515491(Top 55%)5653(Top 46%)5653(Top 103%)
40K24.85 mi0.85 mi19403+1837324+907324+9014421(Top 51%)5213(Top 43%)5213(Top 95%)
25.2M25.20 mi0.35 mi19346+577302+227302+2216900(Top 59%)6554(Top 54%)6554(Top 120%)
Finish26.22 mi1.02 mi19152+1947216+867216+8613839(Top 49%)4885(Top 40%)4885(Top 89%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

21990

Females

8541

F18-39

8541

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

21802

Females

8478

F18-39

8478

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

21990

Females

8541

F18-39

8541

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

20917

Females

8002

F18-39

8002

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20369

Females

7670

F18-39

7670

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

19315

Females

7152

F18-39

7152

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18665

Females

6931

F18-39

6931

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17682

Females

6526

F18-39

6526

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

15443

Females

5426

F18-39

5426

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

18907

Females

7404

F18-39

7404

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

15285

Females

5495

F18-39

5495

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15491

Females

5653

F18-39

5653

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14421

Females

5213

F18-39

5213

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

16900

Females

6554

F18-39

6554

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13839

Females

4885

F18-39

4885

Passing Analysis

Category:
Athletes Passed
3036
Passed By
1021
Net Change
+2015
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21167
5K → 10K171484-313#21167#21480
10K → 15K157311-154#21480#21634
15K → 20K298106+192#21634#21442
20K → Half7511+64#21442#21378
Half → 25K36411+353#21378#21025
25K → 30K48833+455#21025#20570
30K → 20M23211+221#20570#20349
20M → 21M2973+294#20349#20055
21M → 35K7433+41#20055#20014
35K → 23M2491+248#20014#19766
23M → 24M1866+180#19766#19586
24M → 40K1830+183#19586#19403
40K → 25.2M658+57#19403#19346
25.2M → Finish1973+194#19346#19152
TOTALS30361021+2015
📊

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