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BOSTON MARATHON 2025

Tibby Xu

Bib: 9825•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 29%
Gender (Female)
#0 / 12228
Top 11%
Division (F18-39)
#0 / 5469
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:29
Rank: #12737
Start → 5K
23:29 | 7:34/mi
10K· 6.21 mi
46:08
Rank: #11459 (+1278)
5K → 10K
22:39 | 7:17/mi
15K· 9.32 mi
1:08:33
Rank: #10662 (+797)
10K → 15K
22:25 | 7:13/mi
20K· 12.43 mi
1:31:19
Rank: #10294 (+368)
15K → 20K
22:46 | 7:20/mi
Half· 13.11 mi
1:36:16
Rank: #10246 (+48)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:54:14
Rank: #10032 (+214)
Half → 25K
17:58 | 7:25/mi
30K· 18.64 mi
2:17:36
Rank: #9540 (+492)
25K → 30K
23:22 | 7:31/mi
20M
2:27:46
Rank: #9293 (+247)
30K → 20M
10:10 | 7:29/mi
21M
2:35:36
Rank: #9067 (+226)
20M → 21M
7:50 | 7:50/mi
35K· 21.75 mi
2:41:02
Rank: #8957 (+110)
21M → 35K
5:26 | 7:16/mi
23M
2:50:16
Rank: #8679 (+278)
35K → 23M
9:14 | 7:22/mi
24M
2:57:36
Rank: #8523 (+156)
23M → 24M
7:20 | 7:20/mi
40K· 24.85 mi
3:03:51
Rank: #8328 (+195)
24M → 40K
6:15 | 7:19/mi
25.2M
3:06:37
Rank: #8273 (+55)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:13:43
Rank: #8128 (+145)
25.2M → Finish
7:06 | 6:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:16
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:37:27
Pace7:26 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:3523:297:3423:29
7:34
-
10K
6.21 mi11:12:1446:087:2522:39
7:17
-0:17
15K
9.32 mi11:34:391:08:337:2122:25
7:13
-0:04
20K
12.43 mi11:57:251:31:197:2122:46
7:20
+0:07
Half
13.11 mi12:02:221:36:167:214:57
7:15
-0:05
25K
15.53 mi12:20:201:54:147:2117:58
7:25
+0:10
30K
18.64 mi12:43:422:17:367:2323:22
7:31
+0:06
20M
20.00 mi12:53:522:27:467:2310:10
7:29
-0:02
21M
21.00 mi13:01:422:35:367:257:50
7:50
+0:21
35K
21.75 mi13:07:082:41:027:245:26
7:16
-0:34
23M
23.00 mi13:16:222:50:167:249:14
7:22
+0:06
24M
24.00 mi13:23:422:57:367:247:20
7:20
-0:02
40K
24.85 mi13:29:573:03:517:246:15
7:19
-0:01
25.2M
25.20 mi13:32:433:06:377:242:46
8:01
+0:42
Finish
26.22 mi13:39:493:13:437:247:06
6:58
-1:03

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

6:58 /mi

Average Pace

7:24 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:07

95% of race

Time at Steady Pace

10:36

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:23 /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 mi10:49:3523:297:3423:29
7:34
#12737
10K
6.21 mi11:12:1446:087:2522:39
7:17
#11459
15K
9.32 mi11:34:391:08:337:2122:25
7:13
#10662
20K
12.43 mi11:57:251:31:197:2122:46
7:20
#10294
Half
13.11 mi12:02:221:36:167:214:57
7:15
#10246
25K
15.53 mi12:20:201:54:147:2117:58
7:25
#10032
30K
18.64 mi12:43:422:17:367:2323:22
7:31
#9540
20M
20.00 mi12:53:522:27:467:2310:10
7:29
#9293
21M
21.00 mi13:01:422:35:367:257:50
7:50
#9067
35K
21.75 mi13:07:082:41:027:245:26
7:16
#8957
23M
23.00 mi13:16:222:50:167:249:14
7:22
#8679
24M
24.00 mi13:23:422:57:367:247:20
7:20
#8523
40K
24.85 mi13:29:573:03:517:246:15
7:19
#8328
25.2M
25.20 mi13:32:433:06:377:242:46
8:01
#8273
Finish
26.22 mi13:39:493:13:437:247:06
6:58
#8128
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi12737317831789263(Top 33%)1544(Top 13%)1544(Top 28%)
10K6.21 mi3.10 mi11459+12782529+6492529+64910273(Top 36%)1948(Top 16%)1948(Top 36%)
15K9.32 mi3.11 mi10662+7972163+3662163+3669263(Top 33%)1544(Top 13%)1544(Top 28%)
20K12.43 mi3.11 mi10294+3682008+1552008+1559275(Top 33%)1636(Top 13%)1636(Top 30%)
Half13.11 mi0.68 mi10246+481987+211987+219635(Top 34%)1763(Top 14%)1763(Top 32%)
25K15.53 mi2.42 mi10032+2141922+651922+659247(Top 33%)1743(Top 14%)1743(Top 32%)
30K18.64 mi3.11 mi9540+4921746+1761746+1767905(Top 28%)1359(Top 11%)1359(Top 25%)
20M20.00 mi1.36 mi9293+2471671+751671+756909(Top 24%)1120(Top 9%)1120(Top 20%)
21M21.00 mi1.00 mi9067+2261601+701601+706419(Top 23%)1072(Top 9%)1072(Top 20%)
35K21.75 mi0.75 mi8957+1101576+251576+257028(Top 25%)1301(Top 11%)1301(Top 24%)
23M23.00 mi1.25 mi8679+2781503+731503+735928(Top 21%)1000(Top 8%)1000(Top 18%)
24M24.00 mi1.00 mi8523+1561477+261477+266644(Top 23%)1312(Top 11%)1312(Top 24%)
40K24.85 mi0.85 mi8328+1951434+431434+435737(Top 20%)1034(Top 8%)1034(Top 19%)
25.2M25.20 mi0.35 mi8273+551423+111423+116147(Top 22%)1305(Top 11%)1305(Top 24%)
Finish26.22 mi1.02 mi8128+1451405+181405+185552(Top 20%)1081(Top 9%)1081(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9263

Females

1544

F18-39

1544

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

10273

Females

1948

F18-39

1948

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9263

Females

1544

F18-39

1544

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9275

Females

1636

F18-39

1636

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9635

Females

1763

F18-39

1763

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

9247

Females

1743

F18-39

1743

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7905

Females

1359

F18-39

1359

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6909

Females

1120

F18-39

1120

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6419

Females

1072

F18-39

1072

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7028

Females

1301

F18-39

1301

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5928

Females

1000

F18-39

1000

23M→24M

23.0 - 24.0 mi

Top 23%
×6stories
+12ft-82ft

Overall

6644

Females

1312

F18-39

1312

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5737

Females

1034

F18-39

1034

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

6147

Females

1305

F18-39

1305

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5552

Females

1081

F18-39

1081

Passing Analysis

Category:
Athletes Passed
4820*
Passed By
211
Net Change
+4609
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12737
5K → 10K129416+1278#12737#11459
10K → 15K8058+797#11459#10662
15K → 20K39426+368#10662#10294
20K → Half5810+48#10294#10246
Half → 25K257*43+214#10246#10032
25K → 30K521*29+492#10032#9540
30K → 20M2558+247#9540#9293
20M → 21M23610+226#9293#9067
21M → 35K12212+110#9067#8957
35K → 23M2868+278#8957#8679
23M → 24M17216+156#8679#8523
24M → 40K1994+195#8523#8328
40K → 25.2M605+55#8328#8273
25.2M → Finish16116+145#8273#8128
TOTALS4820*211+4609

* 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