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SF MARATHON 1ST HALF 2026

Jan De Castro

Bib: 13090•M•Age: 29

American Canyon, CA

0:00
0:00
/ mi
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Overall
#0 / 6575
Gender (Male)
#0 / 3619
Division (M25-29)
#0 / 796
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
9:43/mi
19:26
→ flat
4M
10:42/mi
40:49
↑ 67↓ 69
6M
10:39/mi
1:02:07
↑ 1231.1%
8M
10:14/mi
1:22:35
↑ 166↓ 531.1%
9.6M
10:14/mi
1:38:57
↑ 68↓ 1931.5%
10M
20:31/mi
1:47:09
↓ 241.1%
10.5M
5:14/mi
1:49:46
↓ 732.7%
12M
16:51/mi
2:15:03
↑ 2803.2%
Finish· 13.11 mi
13:36/mi
2:30:08
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:02:07
Pace10:21 /mi
2nd Half
Distance7.11 mi
Time1:28:01
Pace12:23 /mi
📊Positive Split: 41.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:53:5319:269:4319:26
9:43
-
4M
4.00 mi07:15:1640:4910:1221:23
10:42
+0:59
6M
6.00 mi07:36:341:02:0710:2121:18
10:39
-0:03
8M
8.00 mi07:57:021:22:3510:1920:28
10:14
-0:25
9.6M
9.60 mi08:13:241:38:5710:1816:22
10:14
0:00
10M
10.00 mi08:21:361:47:0910:438:12
20:31
+10:17
10.5M
10.50 mi08:24:131:49:4610:272:37
5:14
-15:17
12M
12.00 mi08:49:302:15:0311:1525:17
16:51
+11:37
Finish
13.11 mi09:04:352:30:0811:2715:05
13:36
-3:15

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

5:14 /mi

Average Pace

11:27 /mi

Slowest Pace

20:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37

2% of race

Time at Steady Pace

1:38:57

66% of race

Time at Slower Pace

48:34

32% of race

Average Pace: 11:27 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi06:53:5319:269:4319:26
9:43
#2596
4M
4.00 mi07:15:1640:4910:1221:23
10:42
#3197
6M
6.00 mi07:36:341:02:0710:2121:18
10:39
#3294
8M
8.00 mi07:57:021:22:3510:1920:28
10:14
#3059
9.6M
9.60 mi08:13:241:38:5710:1816:22
10:14
#3258
10M
10.00 mi08:21:361:47:0910:438:12
20:31
#3281
10.5M
10.50 mi08:24:131:49:4610:272:37
5:14
#3288
12M
12.00 mi08:49:302:15:0311:1525:17
16:51
#3591
Finish
13.11 mi09:04:352:30:0811:2715:05
13:36
#3852
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 56%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

10:49

Segment Time

12:01/mi

Pace

0.90 mi

Distance

Overall

3679

Men

2353

Division

543

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
2M2.00 mi2.00 mi259618224244767(Top 73%)2834(Top 78%)645(Top 81%)
4M4.00 mi2.00 mi3197-6012154-332498-743830(Top 58%)2494(Top 69%)576(Top 72%)
6M6.00 mi2.00 mi3294-972213-59516-183496(Top 53%)2319(Top 64%)549(Top 69%)
8M8.00 mi2.00 mi3059+2352107+106492+242667(Top 41%)1897(Top 52%)443(Top 56%)
9.6M9.60 mi1.60 mi3258-1992200-93522-304296(Top 65%)2574(Top 71%)604(Top 76%)
10M10.00 mi0.40 mi3281-232205-55223753(Top 57%)2376(Top 66%)551(Top 69%)
10.5M10.50 mi0.50 mi3288-72207-25223756(Top 57%)2420(Top 67%)566(Top 71%)
12M12.00 mi1.50 mi3591-3032354-147551-294767(Top 73%)2834(Top 78%)645(Top 81%)
Finish13.11 mi1.11 mi3852-2612480-126582-315825(Top 89%)3276(Top 91%)734(Top 92%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 73%
~flat
+5ft-3ft

Overall

4767

Males

2834

M25-29

646

2M→4M

2.0 - 4.0 mi

Top 58%
×4story building
+67ft-69ft

Overall

3830

Males

2494

M25-29

577

4M→6M

4.0 - 6.0 mi

Top 53%
×9story building
+123ft-9ft

Overall

3496

Males

2319

M25-29

550

6M→8M

6.0 - 8.0 mi

Top 41%
×12story building
+166ft-53ft

Overall

2667

Males

1897

M25-29

444

8M→9.6M

8.0 - 9.6 mi

Top 65%
×13story building
+68ft-193ft

Overall

4296

Males

2574

M25-29

605

9.6M→10M

9.6 - 10.0 mi

Top 57%
×2story building
+0ft-24ft

Overall

3753

Males

2376

M25-29

552

10M→10.5M

10.0 - 10.5 mi

Top 57%
×6story building
+1ft-73ft

Overall

3756

Males

2420

M25-29

567

10.5M→12M

10.5 - 12.0 mi

Top 73%
×21story building
+280ft-26ft

Overall

4767

Males

2834

M25-29

646

12M→Finish

12.0 - 13.1 mi

Top 89%
×7story building
+14ft-89ft

Overall

5825

Males

3276

M25-29

734

Passing Analysis

Category:
Athletes Passed
478*
Passed By
1734
Net Change
-1256
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#2596
2M → 4M26627-601#2596#3197
4M → 6M85182-97#3197#3294
6M → 8M278*43+235#3294#3059
8M → 9.6M18217-199#3059#3258
9.6M → 10M3154-23#3258#3281
10M → 10.5M613-7#3281#3288
10.5M → 12M14317-303#3288#3591
12M → Finish20*281-261#3591#3852
TOTALS478*1734-1256

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events