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BOSTON MARATHON 2025

Guirong Wood

Bib: 18340•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 50%
Gender (Female)
#0 / 12228
Top 36%
Masters (Masters Women)
#0 / 6759
Top 22%
Division (F45-49)
#0 / 1813
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
8:08/mi
25:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:05/mi
50:21
↑ 79↓ 1380.4%
15K· 9.32 mi
7:58/mi
1:15:07
↑ 67↓ 78
20K· 12.43 mi
8:14/mi
1:40:43
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:46:02
↑ 19↓ 370.5%
25K· 15.53 mi
8:06/mi
2:05:41
↑ 66↓ 880.2%
30K· 18.64 mi
8:25/mi
2:31:50
↑ 181↓ 1480.2%
20M
8:23/mi
2:43:14
↑ 64↓ 500.2%
21M
8:47/mi
2:52:01
↑ 106↓ 241.6%
35K· 21.75 mi
7:41/mi
2:57:46
↑ 17↓ 861.7%
23M
7:46/mi
3:07:30
↑ 23↓ 630.6%
24M
8:02/mi
3:15:32
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:22:38
↓ 200.3%
25.2M
9:05/mi
3:25:46
↑ 13↓ 160.2%
Finish· 26.22 mi
7:42/mi
3:33:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:02
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:47:35
Pace8:12 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0025:158:0825:15
8:08
-
10K
6.21 mi11:41:0650:218:0625:06
8:05
-0:03
15K
9.32 mi12:05:521:15:078:0424:46
7:58
-0:07
20K
12.43 mi12:31:281:40:438:0625:36
8:14
+0:16
Half
13.11 mi12:36:471:46:028:055:19
7:48
-0:26
25K
15.53 mi12:56:262:05:418:0519:39
8:06
+0:18
30K
18.64 mi13:22:352:31:508:0926:09
8:25
+0:19
20M
20.00 mi13:33:592:43:148:1011:24
8:23
-0:02
21M
21.00 mi13:42:462:52:018:118:47
8:47
+0:24
35K
21.75 mi13:48:312:57:468:105:45
7:41
-1:06
23M
23.00 mi13:58:153:07:308:099:44
7:46
+0:05
24M
24.00 mi14:06:173:15:328:098:02
8:02
+0:16
40K
24.85 mi14:13:233:22:388:097:06
8:18
+0:16
25.2M
25.20 mi14:16:313:25:468:103:08
9:05
+0:47
Finish
26.22 mi14:24:223:33:378:097:51
7:42
-1:23

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

7:41 /mi

Average Pace

8:09 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:42

94% of race

Time at Steady Pace

8:47

4% of race

Time at Slower Pace

3:08

1% of race

Average Pace: 8:09 /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 mi11:16:0025:158:0825:15
8:08
#17551
10K
6.21 mi11:41:0650:218:0625:06
8:05
#17277
15K
9.32 mi12:05:521:15:078:0424:46
7:58
#16773
20K
12.43 mi12:31:281:40:438:0625:36
8:14
#16717
Half
13.11 mi12:36:471:46:028:055:19
7:48
#16581
25K
15.53 mi12:56:262:05:418:0519:39
8:06
#16255
30K
18.64 mi13:22:352:31:508:0926:09
8:25
#15837
20M
20.00 mi13:33:592:43:148:1011:24
8:23
#15566
21M
21.00 mi13:42:462:52:018:118:47
8:47
#15335
35K
21.75 mi13:48:312:57:468:105:45
7:41
#15108
23M
23.00 mi13:58:153:07:308:099:44
7:46
#14682
24M
24.00 mi14:06:173:15:328:098:02
8:02
#14524
40K
24.85 mi14:13:233:22:388:097:06
8:18
#14398
25.2M
25.20 mi14:16:313:25:468:103:08
9:05
#14367
Finish
26.22 mi14:24:223:33:378:097:51
7:42
#14196
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi175516058605815827(Top 56%)5052(Top 41%)5052(Top 279%)
10K6.21 mi3.10 mi17277+2745889+1695889+16917055(Top 60%)5733(Top 47%)5733(Top 316%)
15K9.32 mi3.11 mi16773+5045594+2955594+29515827(Top 56%)5052(Top 41%)5052(Top 279%)
20K12.43 mi3.11 mi16717+565565+295565+2916566(Top 58%)5522(Top 45%)5522(Top 305%)
Half13.11 mi0.68 mi16581+1365491+745491+7414269(Top 50%)4220(Top 35%)4220(Top 233%)
25K15.53 mi2.42 mi16255+3265314+1775314+17714689(Top 52%)4583(Top 37%)4583(Top 253%)
30K18.64 mi3.11 mi15837+4185127+1875127+18714246(Top 50%)4505(Top 37%)4505(Top 248%)
20M20.00 mi1.36 mi15566+2715011+1165011+11613109(Top 46%)4044(Top 33%)4044(Top 223%)
21M21.00 mi1.00 mi15335+2314912+994912+9912235(Top 43%)3732(Top 31%)3732(Top 206%)
35K21.75 mi0.75 mi15108+2274802+1104802+11010069(Top 35%)2655(Top 22%)2655(Top 146%)
23M23.00 mi1.25 mi14682+4264594+2084594+2088448(Top 30%)2026(Top 17%)2026(Top 112%)
24M24.00 mi1.00 mi14524+1584525+694525+6911534(Top 41%)3596(Top 29%)3596(Top 198%)
40K24.85 mi0.85 mi14398+1264492+334492+3312205(Top 43%)4027(Top 33%)4027(Top 222%)
25.2M25.20 mi0.35 mi14367+314487+54487+512357(Top 44%)4156(Top 34%)4156(Top 229%)
Finish26.22 mi1.02 mi14196+1714415+724415+7210772(Top 38%)3366(Top 28%)3366(Top 186%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21story building
+97ft-345ft

Overall

15827

Females

5052

F45-49

5052

5K→10K

3.1 - 6.2 mi

Top 60%
×5story building
+79ft-138ft

Overall

17055

Females

5733

F45-49

5733

10K→15K

6.2 - 9.3 mi

Top 56%
×3story building
+67ft-78ft

Overall

15827

Females

5052

F45-49

5052

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

16566

Females

5522

F45-49

5522

20K→Half

12.4 - 13.1 mi

Top 50%
×2story building
+19ft-37ft

Overall

14269

Females

4220

F45-49

4220

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

14689

Females

4583

F45-49

4583

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

14246

Females

4505

F45-49

4505

30K→20M

18.6 - 20.0 mi

Top 46%
×5story building
+64ft-50ft

Overall

13109

Females

4044

F45-49

4044

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12235

Females

3732

F45-49

3732

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

10069

Females

2655

F45-49

2655

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8448

Females

2026

F45-49

2026

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11534

Females

3596

F45-49

3596

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12205

Females

4027

F45-49

4027

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12357

Females

4156

F45-49

4156

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10772

Females

3366

F45-49

3366

Passing Analysis

Category:
Athletes Passed
3897
Passed By
542
Net Change
+3355
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17551
5K → 10K445171+274#17551#17277
10K → 15K54339+504#17277#16773
15K → 20K230174+56#16773#16717
20K → Half1371+136#16717#16581
Half → 25K34822+326#16581#16255
25K → 30K45840+418#16255#15837
30K → 20M28312+271#15837#15566
20M → 21M25120+231#15566#15335
21M → 35K2281+227#15335#15108
35K → 23M4271+426#15108#14682
23M → 24M17416+158#14682#14524
24M → 40K14519+126#14524#14398
40K → 25.2M4413+31#14398#14367
25.2M → Finish18413+171#14367#14196
TOTALS3897542+3355
📊

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