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BOSTON MARATHON 2026

Xuhua Niu

Bib: 23165•F

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 47%
Masters (Masters Women)
#0 / 6862
Top 34%
Age Group (F45-49)
#0 / 1786
Top 43%
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
25:44
3.11 mi
Rank: #18768
Start → 5K
25:44 | 8:17/mi
10K
50:48
6.21 mi
Rank: #18253 (+515)
5K → 10K
25:04 | 8:05/mi
15K
1:16:11
9.32 mi
Rank: #18232 (+21)
10K → 15K
25:23 | 8:11/mi
20K
1:41:47
12.43 mi
Rank: #18110 (+122)
15K → 20K
25:36 | 8:15/mi
HALF
1:47:20
13.11 mi
Rank: #18095 (+15)
20K → HALF
5:33 | 8:09/mi
25K
2:07:18
15.53 mi
Rank: #17910 (+185)
HALF → 25K
19:58 | 8:14/mi
30K
2:33:12
18.64 mi
Rank: #17504 (+406)
25K → 30K
25:54 | 8:21/mi
20M
2:44:27
20.00 mi
Rank: #17291 (+213)
30K → 20M
11:15 | 8:17/mi
21M
2:53:13
21.00 mi
Rank: #17117 (+174)
20M → 21M
8:46 | 8:46/mi
35K
2:59:37
21.75 mi
Rank: #17134 (-17)
21M → 35K
6:24 | 8:34/mi
23M
3:10:13
23.00 mi
Rank: #17020 (+114)
35K → 23M
10:36 | 8:29/mi
24M
3:18:18
24.00 mi
Rank: #16877 (+143)
23M → 24M
8:05 | 8:05/mi
40K
3:25:25
24.85 mi
Rank: #16787 (+90)
24M → 40K
7:07 | 8:20/mi
25.2M
3:28:31
25.20 mi
Rank: #16732 (+55)
40K → 25.2M
3:06 | 9:00/mi
FINISH
3:36:48
26.22 mi
Rank: #16681 (+51)
25.2M → FINISH
8:17 | 8:08/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:47:20
Pace8:12 /mi
2nd Half
Distance13.11 mi
Time1:49:28
Pace8:22 /mi
📊Positive Split: 2.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:2525:448:1725:44
8:17
-
10K
6.21 mi11:53:2950:488:1125:04
8:05
-0:12
15K
9.32 mi12:18:521:16:118:1125:23
8:11
+0:06
20K
12.43 mi12:44:281:41:478:1225:36
8:15
+0:04
HALF
13.11 mi12:50:011:47:208:125:33
8:09
-0:06
25K
15.53 mi13:09:592:07:188:1219:58
8:14
+0:05
30K
18.64 mi13:35:532:33:128:1425:54
8:21
+0:07
20M
20.00 mi13:47:082:44:278:1411:15
8:17
-0:04
21M
21.00 mi13:55:542:53:138:158:46
8:46
+0:29
35K
21.75 mi14:02:182:59:378:166:24
8:34
-0:12
23M
23.00 mi14:12:543:10:138:1710:36
8:29
-0:05
24M
24.00 mi14:20:593:18:188:168:05
8:05
-0:24
40K
24.85 mi14:28:063:25:258:167:07
8:20
+0:15
25.2M
25.20 mi14:31:123:28:318:173:06
9:00
+0:40
FINISH
26.22 mi14:39:293:36:488:178:17
8:08
-0:52

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:05 /mi

Average Pace

8:16 /mi

Slowest Pace

9:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:33:42

99% of race

Time at Steady Pace

3:06

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:16 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:28:2525:448:1725:44
8:17
#18768
10K
6.21 mi11:53:2950:488:1125:04
8:05
#18253
15K
9.32 mi12:18:521:16:118:1125:23
8:11
#18232
20K
12.43 mi12:44:281:41:478:1225:36
8:15
#18110
HALF
13.11 mi12:50:011:47:208:125:33
8:09
#18095
25K
15.53 mi13:09:592:07:188:1219:58
8:14
#17910
30K
18.64 mi13:35:532:33:128:1425:54
8:21
#17504
20M
20.00 mi13:47:082:44:278:1411:15
8:17
#17291
21M
21.00 mi13:55:542:53:138:158:46
8:46
#17117
35K
21.75 mi14:02:182:59:378:166:24
8:34
#17134
23M
23.00 mi14:12:543:10:138:1710:36
8:29
#17020
24M
24.00 mi14:20:593:18:188:168:05
8:05
#16877
40K
24.85 mi14:28:063:25:258:167:07
8:20
#16787
25.2M
25.20 mi14:31:123:28:318:173:06
9:00
#16732
FINISH
26.22 mi14:39:293:36:488:178:17
8:08
#16681
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi187686952695218151(Top 63%)6557(Top 52%)6557(Top 367%)
10K6.21 mi3.10 mi18253+5156639+3136639+31317762(Top 61%)6356(Top 51%)6356(Top 356%)
15K9.32 mi3.11 mi18232+216615+246615+2418151(Top 63%)6557(Top 52%)6557(Top 367%)
20K12.43 mi3.11 mi18110+1226551+646551+6417752(Top 61%)6364(Top 51%)6364(Top 356%)
HALF13.11 mi0.68 mi18095+156539+126539+1218063(Top 62%)6491(Top 52%)6491(Top 363%)
25K15.53 mi2.42 mi17910+1856449+906449+9017026(Top 59%)5999(Top 48%)5999(Top 336%)
30K18.64 mi3.11 mi17504+4066238+2116238+21115878(Top 55%)5458(Top 43%)5458(Top 306%)
20M20.00 mi1.36 mi17291+2136134+1046134+10414855(Top 51%)4977(Top 40%)4977(Top 279%)
21M21.00 mi1.00 mi17117+1746060+746060+7414817(Top 51%)5049(Top 40%)5049(Top 283%)
35K21.75 mi0.75 mi17134-176092-326092-3217894(Top 62%)6828(Top 54%)6828(Top 382%)
23M23.00 mi1.25 mi17020+1146054+386054+3815557(Top 54%)5578(Top 44%)5578(Top 312%)
24M24.00 mi1.00 mi16877+1435991+635991+6314357(Top 49%)5001(Top 40%)5001(Top 280%)
40K24.85 mi0.85 mi16787+905956+355956+3514643(Top 50%)5240(Top 42%)5240(Top 293%)
25.2M25.20 mi0.35 mi16732+555938+185938+1814751(Top 51%)5320(Top 42%)5320(Top 298%)
FINISH26.22 mi1.02 mi16681+515930+85930+816005(Top 55%)5949(Top 47%)5949(Top 333%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21
+97ft-345ft

Overall

18151

Females

6557

F45-49

6557

5K→10K

3.1 - 6.2 mi

Top 61%
×5
+79ft-138ft

Overall

17762

Females

6356

F45-49

6356

10K→15K

6.2 - 9.3 mi

Top 63%
×3
+67ft-78ft

Overall

18151

Females

6557

F45-49

6557

15K→20K

9.3 - 12.4 mi

Top 61%
×5
+106ft-86ft

Overall

17752

Females

6364

F45-49

6364

20K→HALF

12.4 - 13.1 mi

Top 62%
×2
+19ft-37ft

Overall

18063

Females

6491

F45-49

6491

HALF→25K

13.1 - 15.5 mi

Top 59%
×4
+66ft-88ft

Overall

17026

Females

5999

F45-49

5999

25K→30K

15.5 - 18.6 mi

Top 55%
×9
+181ft-148ft

Overall

15878

Females

5458

F45-49

5458

30K→20M

18.6 - 20.0 mi

Top 51%
×5
+64ft-50ft

Overall

14855

Females

4977

F45-49

4977

20M→21M

20.0 - 21.0 mi

Top 51%
×8
+106ft-24ft

Overall

14817

Females

5049

F45-49

5049

21M→35K

21.0 - 21.8 mi

Top 62%
×7
+17ft-86ft

Overall

17894

Females

6828

F45-49

6828

35K→23M

21.8 - 23.0 mi

Top 54%
×5
+23ft-63ft

Overall

15557

Females

5578

F45-49

5578

23M→24M

23.0 - 24.0 mi

Top 49%
×6
+12ft-82ft

Overall

14357

Females

5001

F45-49

5001

24M→40K

24.0 - 24.9 mi

Top 50%
×1
+6ft-20ft

Overall

14643

Females

5240

F45-49

5240

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1
+13ft-16ft

Overall

14751

Females

5320

F45-49

5320

25.2M→FINISH

25.2 - 26.2 mi

Top 55%
×2
+22ft-21ft

Overall

16005

Females

5949

F45-49

5949

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2771
Passed By
684
Net Change
+2087
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18768
5K → 10K61196+515#18768#18253
10K → 15K198177+21#18253#18232
15K → 20K226104+122#18232#18110
20K → HALF3823+15#18110#18095
HALF → 25K22035+185#18095#17910
25K → 30K43832+406#17910#17504
30K → 20M22714+213#17504#17291
20M → 21M19218+174#17291#17117
21M → 35K5673-17#17117#17134
35K → 23M15238+114#17134#17020
23M → 24M1529+143#17020#16877
24M → 40K10818+90#16877#16787
40K → 25.2M6510+55#16787#16732
25.2M → FINISH8837+51#16732#16681
TOTALS2771684+2087
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing