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BOSTON MARATHON 2025

Ke Xi

Bib: 20059•F

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 46%
Masters (Masters Women)
#0 / 6759
Top 34%
Division (F50-54)
#0 / 1303
Top 27%
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
8:19/mi
25:50
↑ 97↓ 3451.5%
10K· 6.21 mi
8:19/mi
51:40
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:17:28
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:43:31
↑ 106↓ 860.1%
Half· 13.11 mi
8:11/mi
1:49:06
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:09:33
↑ 66↓ 880.2%
30K· 18.64 mi
8:42/mi
2:36:36
↑ 181↓ 1480.2%
20M
8:37/mi
2:48:18
↑ 64↓ 500.2%
21M
9:14/mi
2:57:32
↑ 106↓ 241.6%
35K· 21.75 mi
8:29/mi
3:03:53
↑ 17↓ 861.7%
23M
8:40/mi
3:14:44
↑ 23↓ 630.6%
24M
8:27/mi
3:23:11
↓ 821.3%
40K· 24.85 mi
8:25/mi
3:30:23
↓ 200.3%
25.2M
9:20/mi
3:33:36
↑ 13↓ 160.2%
Finish· 26.22 mi
8:14/mi
3:41:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:06
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:52:53
Pace8:37 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3425:508:1925:50
8:19
-
10K
6.21 mi11:45:2451:408:1925:50
8:19
0:00
15K
9.32 mi12:11:121:17:288:1925:48
8:18
-0:01
20K
12.43 mi12:37:151:43:318:2026:03
8:23
+0:05
Half
13.11 mi12:42:501:49:068:195:35
8:11
-0:12
25K
15.53 mi13:03:172:09:338:2020:27
8:26
+0:15
30K
18.64 mi13:30:202:36:368:2427:03
8:42
+0:16
20M
20.00 mi13:42:022:48:188:2511:42
8:37
-0:05
21M
21.00 mi13:51:162:57:328:279:14
9:14
+0:37
35K
21.75 mi13:57:373:03:538:276:21
8:29
-0:45
23M
23.00 mi14:08:283:14:448:2810:51
8:40
+0:11
24M
24.00 mi14:16:553:23:118:288:27
8:27
-0:13
40K
24.85 mi14:24:073:30:238:287:12
8:25
-0:02
25.2M
25.20 mi14:27:203:33:368:293:13
9:20
+0:55
Finish
26.22 mi14:35:433:41:598:288:23
8:14
-1:06

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

8:11 /mi

Average Pace

8:28 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:29:32

94% of race

Time at Steady Pace

12:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:28 /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 mi11:19:3425:508:1925:50
8:19
#18812
10K
6.21 mi11:45:2451:408:1925:50
8:19
#18713
15K
9.32 mi12:11:121:17:288:1925:48
8:18
#18472
20K
12.43 mi12:37:151:43:318:2026:03
8:23
#18193
Half
13.11 mi12:42:501:49:068:195:35
8:11
#18113
25K
15.53 mi13:03:172:09:338:2020:27
8:26
#17856
30K
18.64 mi13:30:202:36:368:2427:03
8:42
#17470
20M
20.00 mi13:42:022:48:188:2511:42
8:37
#17227
21M
21.00 mi13:51:162:57:328:279:14
9:14
#17053
35K
21.75 mi13:57:373:03:538:276:21
8:29
#16979
23M
23.00 mi14:08:283:14:448:2810:51
8:40
#16796
24M
24.00 mi14:16:553:23:118:288:27
8:27
#16667
40K
24.85 mi14:24:073:30:238:287:12
8:25
#16501
25.2M
25.20 mi14:27:203:33:368:293:13
9:20
#16458
Finish
26.22 mi14:35:433:41:598:288:23
8:14
#16359
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi188126801680118090(Top 64%)6372(Top 52%)6372(Top 489%)
10K6.21 mi3.10 mi18713+996742+596742+5918645(Top 66%)6674(Top 55%)6674(Top 512%)
15K9.32 mi3.11 mi18472+2416607+1356607+13518090(Top 64%)6372(Top 52%)6372(Top 489%)
20K12.43 mi3.11 mi18193+2796452+1556452+15517467(Top 61%)6035(Top 49%)6035(Top 463%)
Half13.11 mi0.68 mi18113+806406+466406+4617224(Top 61%)5889(Top 48%)5889(Top 452%)
25K15.53 mi2.42 mi17856+2576273+1336273+13316787(Top 59%)5734(Top 47%)5734(Top 440%)
30K18.64 mi3.11 mi17470+3866101+1726101+17216042(Top 56%)5485(Top 45%)5485(Top 421%)
20M20.00 mi1.36 mi17227+2435982+1195982+11914525(Top 51%)4794(Top 39%)4794(Top 368%)
21M21.00 mi1.00 mi17053+1745907+755907+7514844(Top 52%)5084(Top 42%)5084(Top 390%)
35K21.75 mi0.75 mi16979+745883+245883+2415428(Top 54%)5484(Top 45%)5484(Top 421%)
23M23.00 mi1.25 mi16796+1835809+745809+7414363(Top 51%)5000(Top 41%)5000(Top 384%)
24M24.00 mi1.00 mi16667+1295755+545755+5414231(Top 50%)4950(Top 40%)4950(Top 380%)
40K24.85 mi0.85 mi16501+1665690+655690+6512978(Top 46%)4440(Top 36%)4440(Top 341%)
25.2M25.20 mi0.35 mi16458+435673+175673+1713693(Top 48%)4873(Top 40%)4873(Top 374%)
Finish26.22 mi1.02 mi16359+995642+315642+3114476(Top 51%)5199(Top 43%)5199(Top 399%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18090

Females

6372

F50-54

6372

5K→10K

3.1 - 6.2 mi

Top 66%
×5story building
+79ft-138ft

Overall

18645

Females

6674

F50-54

6674

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18090

Females

6372

F50-54

6372

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17467

Females

6035

F50-54

6035

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

17224

Females

5889

F50-54

5889

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

16787

Females

5734

F50-54

5734

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

16042

Females

5485

F50-54

5485

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

14525

Females

4794

F50-54

4794

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14844

Females

5084

F50-54

5084

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15428

Females

5484

F50-54

5484

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

14363

Females

5000

F50-54

5000

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14231

Females

4950

F50-54

4950

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12978

Females

4440

F50-54

4440

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13693

Females

4873

F50-54

4873

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2story building
+22ft-21ft

Overall

14476

Females

5199

F50-54

5199

Passing Analysis

Category:
Athletes Passed
3081
Passed By
628
Net Change
+2453
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18812
5K → 10K314215+99#18812#18713
10K → 15K32079+241#18713#18472
15K → 20K33556+279#18472#18193
20K → Half866+80#18193#18113
Half → 25K30548+257#18113#17856
25K → 30K44155+386#17856#17470
30K → 20M25714+243#17470#17227
20M → 21M20329+174#17227#17053
21M → 35K10127+74#17053#16979
35K → 23M20926+183#16979#16796
23M → 24M14819+129#16796#16667
24M → 40K17711+166#16667#16501
40K → 25.2M5512+43#16501#16458
25.2M → Finish13031+99#16458#16359
TOTALS3081628+2453
📊

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