Boston Marathon logo
BOSTON MARATHON 2025

Casey Hildebrandt

Bib: 4229•M

WI

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:26
Rank: #2179
Start → 5K
19:26 | 6:15/mi
10K· 6.21 mi
38:50
Rank: #2136 (+43)
5K → 10K
19:24 | 6:15/mi
15K· 9.32 mi
58:19
Rank: #2140 (-4)
10K → 15K
19:29 | 6:16/mi
20K· 12.43 mi
1:17:48
Rank: #2057 (+83)
15K → 20K
19:29 | 6:16/mi
Half· 13.11 mi
1:22:01
Rank: #2047 (+10)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:37:17
Rank: #2003 (+44)
Half → 25K
15:16 | 6:18/mi
30K· 18.64 mi
1:58:30
Rank: #2216 (-213)
25K → 30K
21:13 | 6:50/mi
20M
2:07:33
Rank: #2210 (+6)
30K → 20M
9:03 | 6:40/mi
21M
2:14:44
Rank: #2224 (-14)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:19:36
Rank: #2219 (+5)
21M → 35K
4:52 | 6:30/mi
23M
2:28:28
Rank: #2288 (-69)
35K → 23M
8:52 | 7:05/mi
24M
2:35:57
Rank: #2462 (-174)
23M → 24M
7:29 | 7:29/mi
40K· 24.85 mi
2:42:10
Rank: #2528 (-66)
24M → 40K
6:13 | 7:16/mi
25.2M
2:44:45
Rank: #2526 (+2)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
2:51:31
Rank: #2541 (-15)
25.2M → Finish
6:46 | 6:38/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:01
Pace6:15 /mi
2nd Half
Distance13.11 mi
Time1:29:30
Pace6:50 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3619:266:1519:26
6:15
-
10K
6.21 mi10:42:0038:506:1519:24
6:15
0:00
15K
9.32 mi11:01:2958:196:1519:29
6:16
+0:01
20K
12.43 mi11:20:581:17:486:1619:29
6:16
0:00
Half
13.11 mi11:25:111:22:016:154:13
6:11
-0:05
25K
15.53 mi11:40:271:37:176:1615:16
6:18
+0:07
30K
18.64 mi12:01:401:58:306:2121:13
6:50
+0:32
20M
20.00 mi12:10:432:07:336:239:03
6:40
-0:10
21M
21.00 mi12:17:542:14:446:257:11
7:11
+0:31
35K
21.75 mi12:22:462:19:366:254:52
6:30
-0:41
23M
23.00 mi12:31:382:28:286:278:52
7:05
+0:35
24M
24.00 mi12:39:072:35:576:307:29
7:29
+0:24
40K
24.85 mi12:45:202:42:106:316:13
7:16
-0:13
25.2M
25.20 mi12:47:552:44:456:322:35
7:29
+0:13
Finish
26.22 mi12:54:412:51:316:336:46
6:38
-0:51

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

6:11 /mi

Average Pace

6:33 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:17

57% of race

Time at Steady Pace

41:54

24% of race

Time at Slower Pace

32:20

19% of race

Average Pace: 6:32 /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 mi10:22:3619:266:1519:26
6:15
#2179
10K
6.21 mi10:42:0038:506:1519:24
6:15
#2136
15K
9.32 mi11:01:2958:196:1519:29
6:16
#2140
20K
12.43 mi11:20:581:17:486:1619:29
6:16
#2057
Half
13.11 mi11:25:111:22:016:154:13
6:11
#2047
25K
15.53 mi11:40:271:37:176:1615:16
6:18
#2003
30K
18.64 mi12:01:401:58:306:2121:13
6:50
#2216
20M
20.00 mi12:10:432:07:336:239:03
6:40
#2210
21M
21.00 mi12:17:542:14:446:257:11
7:11
#2224
35K
21.75 mi12:22:462:19:366:254:52
6:30
#2219
23M
23.00 mi12:31:382:28:286:278:52
7:05
#2288
24M
24.00 mi12:39:072:35:576:307:29
7:29
#2462
40K
24.85 mi12:45:202:42:106:316:13
7:16
#2528
25.2M
25.20 mi12:47:552:44:456:322:35
7:29
#2526
Finish
26.22 mi12:54:412:51:316:336:46
6:38
#2541
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2179208020802216(Top 8%)2112(Top 13%)2112(Top 37%)
10K6.21 mi3.10 mi2136+432038+422038+422132(Top 8%)2035(Top 13%)2035(Top 36%)
15K9.32 mi3.11 mi2140-42043-52043-52216(Top 8%)2112(Top 13%)2112(Top 37%)
20K12.43 mi3.11 mi2057+831964+791964+791903(Top 7%)1813(Top 11%)1813(Top 32%)
Half13.11 mi0.68 mi2047+101955+91955+91930(Top 7%)1843(Top 11%)1843(Top 33%)
25K15.53 mi2.42 mi2003+441910+451910+451855(Top 7%)1763(Top 11%)1763(Top 31%)
30K18.64 mi3.11 mi2216-2132112-2022112-2023624(Top 13%)3358(Top 21%)3358(Top 60%)
20M20.00 mi1.36 mi2210+62107+52107+52298(Top 8%)2172(Top 13%)2172(Top 38%)
21M21.00 mi1.00 mi2224-142122-152122-153070(Top 11%)2835(Top 18%)2835(Top 50%)
35K21.75 mi0.75 mi2219+52117+52117+52509(Top 9%)2342(Top 15%)2342(Top 42%)
23M23.00 mi1.25 mi2288-692180-632180-634237(Top 15%)3766(Top 23%)3766(Top 67%)
24M24.00 mi1.00 mi2462-1742342-1622342-1627540(Top 27%)5829(Top 36%)5829(Top 103%)
40K24.85 mi0.85 mi2528-662398-562398-565476(Top 19%)4536(Top 28%)4536(Top 80%)
25.2M25.20 mi0.35 mi2526+22395+32395+33375(Top 12%)2965(Top 18%)2965(Top 53%)
Finish26.22 mi1.02 mi2541-152407-122407-123561(Top 13%)3108(Top 19%)3108(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2216

Males

2112

M18-39

2112

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2132

Males

2035

M18-39

2035

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2216

Males

2112

M18-39

2112

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1903

Males

1813

M18-39

1813

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1930

Males

1843

M18-39

1843

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1855

Males

1763

M18-39

1763

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3624

Males

3358

M18-39

3358

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2298

Males

2172

M18-39

2172

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3070

Males

2835

M18-39

2835

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2509

Males

2342

M18-39

2342

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4237

Males

3766

M18-39

3766

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7540

Males

5829

M18-39

5829

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5476

Males

4536

M18-39

4536

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3375

Males

2965

M18-39

2965

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3561

Males

3108

M18-39

3108

Passing Analysis

Category:
Athletes Passed
643
Passed By
1005
Net Change
-362
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2179
5K → 10K13693+43#2179#2136
10K → 15K7276-4#2136#2140
15K → 20K10320+83#2140#2057
20K → Half188+10#2057#2047
Half → 25K7430+44#2047#2003
25K → 30K36249-213#2003#2216
30K → 20M4034+6#2216#2210
20M → 21M4054-14#2210#2224
21M → 35K2318+5#2224#2219
35K → 23M2897-69#2219#2288
23M → 24M13187-174#2288#2462
24M → 40K1884-66#2462#2528
40K → 25.2M1311+2#2528#2526
25.2M → Finish2944-15#2526#2541
TOTALS6431005-362
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing