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BOSTON MARATHON 2025

Kejia Guo

Bib: 24069•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
8:14/mi
25:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:08/mi
50:49
↑ 79↓ 1380.4%
15K· 9.32 mi
8:15/mi
1:16:27
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:43:47
↑ 106↓ 860.1%
Half· 13.11 mi
8:52/mi
1:49:50
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:12:27
↑ 66↓ 880.2%
30K· 18.64 mi
9:36/mi
2:42:18
↑ 181↓ 1480.2%
20M
9:56/mi
2:55:48
↑ 64↓ 500.2%
21M
10:19/mi
3:06:07
↑ 106↓ 241.6%
35K· 21.75 mi
9:13/mi
3:13:01
↑ 17↓ 861.7%
23M
9:29/mi
3:24:53
↑ 23↓ 630.6%
24M
9:31/mi
3:34:24
↓ 821.3%
40K· 24.85 mi
9:40/mi
3:42:40
↓ 200.3%
25.2M
10:26/mi
3:46:16
↑ 13↓ 160.2%
Finish· 26.22 mi
9:11/mi
3:55:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:50
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:05:47
Pace9:36 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:4225:348:1425:34
8:14
-
10K
6.21 mi11:48:5750:498:1125:15
8:08
-0:06
15K
9.32 mi12:14:351:16:278:1225:38
8:15
+0:07
20K
12.43 mi12:41:551:43:478:2127:20
8:48
+0:33
Half
13.11 mi12:47:581:49:508:236:03
8:52
+0:04
25K
15.53 mi13:10:352:12:278:3222:37
9:20
+0:28
30K
18.64 mi13:40:262:42:188:4229:51
9:36
+0:16
20M
20.00 mi13:53:562:55:488:4713:30
9:56
+0:20
21M
21.00 mi14:04:153:06:078:5210:19
10:19
+0:23
35K
21.75 mi14:11:093:13:018:536:54
9:13
-1:06
23M
23.00 mi14:23:013:24:538:5411:52
9:29
+0:16
24M
24.00 mi14:32:323:34:248:569:31
9:31
+0:02
40K
24.85 mi14:40:483:42:408:588:16
9:40
+0:09
25.2M
25.20 mi14:44:243:46:168:593:36
10:26
+0:46
Finish
26.22 mi14:53:453:55:379:009:21
9:11
-1:15

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

9:00 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:50

47% of race

Time at Steady Pace

1:38:22

42% of race

Time at Slower Pace

27:25

12% 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 mi11:23:4225:348:1425:34
8:14
#18302
10K
6.21 mi11:48:5750:498:1125:15
8:08
#17833
15K
9.32 mi12:14:351:16:278:1225:38
8:15
#17776
20K
12.43 mi12:41:551:43:478:2127:20
8:48
#18324
Half
13.11 mi12:47:581:49:508:236:03
8:52
#18508
25K
15.53 mi13:10:352:12:278:3222:37
9:20
#19069
30K
18.64 mi13:40:262:42:188:4229:51
9:36
#19356
20M
20.00 mi13:53:562:55:488:4713:30
9:56
#19516
21M
21.00 mi14:04:153:06:078:5210:19
10:19
#19504
35K
21.75 mi14:11:093:13:018:536:54
9:13
#19501
23M
23.00 mi14:23:013:24:538:5411:52
9:29
#19456
24M
24.00 mi14:32:323:34:248:569:31
9:31
#19473
40K
24.85 mi14:40:483:42:408:588:16
9:40
#19466
25.2M
25.20 mi14:44:243:46:168:593:36
10:26
#19447
Finish
26.22 mi14:53:453:55:379:009:21
9:11
#19480
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi183026530653017759(Top 63%)6177(Top 51%)6177(Top 474%)
10K6.21 mi3.10 mi17833+4696231+2996231+29917415(Top 61%)5950(Top 49%)5950(Top 457%)
15K9.32 mi3.11 mi17776+576196+356196+3517759(Top 63%)6177(Top 51%)6177(Top 474%)
20K12.43 mi3.11 mi18324-5486526-3306526-33019931(Top 70%)7442(Top 61%)7442(Top 571%)
Half13.11 mi0.68 mi18508-1846622-966622-9621242(Top 75%)8156(Top 67%)8156(Top 626%)
25K15.53 mi2.42 mi19069-5616958-3366958-33621299(Top 75%)8259(Top 68%)8259(Top 634%)
30K18.64 mi3.11 mi19356-2877163-2057163-20520376(Top 72%)7862(Top 64%)7862(Top 603%)
20M20.00 mi1.36 mi19516-1607274-1117274-11120719(Top 73%)8200(Top 67%)8200(Top 629%)
21M21.00 mi1.00 mi19504+127287-137287-1319438(Top 68%)7579(Top 62%)7579(Top 582%)
35K21.75 mi0.75 mi19501+37303-167303-1619290(Top 68%)7599(Top 62%)7599(Top 583%)
23M23.00 mi1.25 mi19456+457315-127315-1218602(Top 65%)7295(Top 60%)7295(Top 560%)
24M24.00 mi1.00 mi19473-177346-317346-3119684(Top 69%)7923(Top 65%)7923(Top 608%)
40K24.85 mi0.85 mi19466+77361-157361-1519365(Top 68%)7817(Top 64%)7817(Top 600%)
25.2M25.20 mi0.35 mi19447+197357+47357+418831(Top 66%)7542(Top 62%)7542(Top 579%)
Finish26.22 mi1.02 mi19480-337396-397396-3919858(Top 70%)8068(Top 66%)8068(Top 619%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

17759

Females

6177

F50-54

6177

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17415

Females

5950

F50-54

5950

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

17759

Females

6177

F50-54

6177

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19931

Females

7442

F50-54

7442

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

21242

Females

8156

F50-54

8156

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

21299

Females

8259

F50-54

8259

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

20376

Females

7862

F50-54

7862

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20719

Females

8200

F50-54

8200

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

19438

Females

7579

F50-54

7579

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19290

Females

7599

F50-54

7599

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

18602

Females

7295

F50-54

7295

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

19684

Females

7923

F50-54

7923

24M→40K

24.0 - 24.9 mi

Top 68%
×1story
+6ft-20ft

Overall

19365

Females

7817

F50-54

7817

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18831

Females

7542

F50-54

7542

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2story building
+22ft-21ft

Overall

19858

Females

8068

F50-54

8068

Passing Analysis

Category:
Athletes Passed
1593
Passed By
2771
Net Change
-1178
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18302
5K → 10K574105+469#18302#17833
10K → 15K217160+57#17833#17776
15K → 20K61609-548#17776#18324
20K → Half5189-184#18324#18508
Half → 25K59620-561#18508#19069
25K → 30K138425-287#19069#19356
30K → 20M63223-160#19356#19516
20M → 21M9886+12#19516#19504
21M → 35K5451+3#19504#19501
35K → 23M11469+45#19501#19456
23M → 24M6077-17#19456#19473
24M → 40K6659+7#19473#19466
40K → 25.2M3415+19#19466#19447
25.2M → Finish5083-33#19447#19480
TOTALS15932771-1178
📊

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